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VersionFunctionDescription
Since 5.0.0get_parent_classThe object parameter is optional if called from the object's method.
Since 5.0cal_info����calendar��Ϊ��ѡ�ȱʡʱĬ��ֵΪ"��������"��
Since 4.3.0easter_dateyear������ѡ��ȱʡ��Ĭ��ֵ�ǵ��ꡣ
 easter_days������� method��
 easter_days����year ��ѡ��ȱʡĬ��ֵ�ǵ��ꡣ
Since 4.2.0srandseed ��Ϊ��ѡ��ʡ��ʱ��Ĭ��ʹ�����ֵ��
Since 4.0.5get_parent_classIf object is a string, returns the name of the parent class of the class with that name.
prior to 5.3.0get_object_varsIf the object isn't an object, then get_object_vars would return FALSE
Prior to 5.1.3imagecolorallocatealphaReturns -1 if the allocation failed.
prior to 4.2.0get_object_varsIf the variables declared in the class of which the object is an instance, have not been assigned a value, those will not be returned in the array
PHP 7.0.15, PHP 7.1.1get_defined_functions���� exclude_disabled ������
PHP 5.3.2 (PECL OCI8 1.4)oci_set_prefetchBefore this release, rows must be >= 1.
PHP 5.3 (PECL OCI8 1.3.4)oci_set_prefetchBefore this release, prefetching was limited to the lesser of rows rows and 1024 * rows bytes. The byte size restriction has now been removed.
Before 5.1.0get_parent_classIf called without parameter outside object, this function would have returned NULL with a warning.
7.4.0idn_to_asciiThe default value of variant is now INTL_IDNA_VARIANT_UTS46 instead of the deprecated INTL_IDNA_VARIANT_2003.
 idn_to_utf8The default value of variant is now INTL_IDNA_VARIANT_UTS46 instead of the deprecated INTL_IDNA_VARIANT_2003.
 imagecropautoThe behavior of imagecropauto() in the bundled libgd has been synced with that of system libgd: IMG_CROP_DEFAULT no longer falls back to IMG_CROP_SIDES and threshold-cropping now uses the same algorithm as system libgd.
 imagecropautoThe default value of mode has been changed to IMG_CROP_AUTO. Formerly, the default value has been -1 which corresponds to IMG_CROP_DEFAULT, but passing -1 is now deprecated.
 SQLite3Stmt::bindParamsql_param now also supports the @param notation.
 SQLite3Stmt::bindValuesql_param now also supports the @param notation.
7.3.0array_unshift���ڿ���ֻ��һ�����������ã�֮ǰ������Ҫ����������
 compact���ڣ�����ַ���ָ��ı���δ���壬compact ����� E_NOTICE ������ �ڴ�֮ǰ����������ᾲĬ���Ե���
 ftp_nb_fget���� mode ��Ϊ��ѡ������ ��֮ǰ�İ汾�У�����һ�����������
 ftp_nb_fput���� mode ��Ϊ��ѡ������ ��֮ǰ�İ汾�У�����һ�����������
 is_countableis_countable has been added.
7.3ldap_addSupport for serverctrls added
 ldap_compareSupport for serverctrls added
 ldap_deleteSupport for serverctrls added
 ldap_exopSupport for serverctrls added
 ldap_exop_passwdSupport for serverctrls added
 ldap_listSupport for serverctrls added
 ldap_mod_addSupport for serverctrls added
 ldap_mod_delSupport for serverctrls added
 ldap_mod_replaceSupport for serverctrls added
 ldap_modify_batchSupport for serverctrls added
 ldap_parse_resultSupport for serverctrls added
 ldap_readSupport for serverctrls added
 ldap_renameSupport for serverctrls added
 ldap_searchSupport for serverctrls added
7.2.0count����Ч�� countable ���ʹ��ݸ� array_or_countable ����ʱ��count ��������档
 date_parse_from_formatThe zone element of the returned array represents seconds instead of minutes now, and its sign is inverted. For instance -120 is now 7200.
 hash_copy���ܵIJ����Լ�����ֵ����Դ�����޸�Ϊ HashContext �������͡�
 hash_final���ղ�������Դ�����޸�Ϊ HashContext �������͡�
 hash_hmac����֧�ַǼ��ܵĹ�ϣ������adler32��crc32��crc32b��fnv132��fnv1a32��fnv164��fnv1a64��joaat����
 hash_hmac_file����֧�ַǼ��ܵĹ�ϣ������adler32��crc32��crc32b��fnv132��fnv1a32��fnv164��fnv1a64��joaat����
 hash_init��ʹ�� HASH_HMAC ѡ���ʱ�򣬲���֧�ַǼ��ܵĹ�ϣ������adler32��crc32��crc32b��fnv132��fnv1a32��fnv164��fnv1a64��joaat����
 hash_init���� HashContext ���󣬲��ٷ�����Դ���͡�
 hash_pbkdf2����֧�ַǼ��ܵĹ�ϣ������adler32��crc32��crc32b��fnv132��fnv1a32��fnv164��fnv1a64��joaat����
 hash_update���ղ�������Դ�����޸�Ϊ HashContext �������͡�
 hash_update_file���ղ�������Դ�����޸�Ϊ HashContext �������͡�
 hash_update_stream���ղ�������Դ�����޸�Ϊ HashContext �������͡�
 idn_to_asciiINTL_IDNA_VARIANT_2003 has been deprecated; use INTL_IDNA_VARIANT_UTS46 instead.
 idn_to_utf8INTL_IDNA_VARIANT_2003 has been deprecated; use INTL_IDNA_VARIANT_UTS46 instead.
 number_formatnumber_format �����޷����� -0��֮ǰ���ܷ��� -0����Ϊ number ���ܻ��� -0.01��
 packfloat �� double ����֧�ִ�Ϻ�С�ˡ�
 parse_str�����ڶ��������������ʹ�� parse_str ����� E_DEPRECATED ���档
 password_hash��� PASSWORD_ARGON2I��֧�� Argon2 ����ɢ���㷨��
 proc_nice�� Windows ƽ̨�Ͽ��á�
 session_abortThe return type of this function is bool now. Formerly, it has been void.
 session_namesession_name ��������Ự״̬�� ֮ǰ�İ汾������� cookie ״̬�� ���ԣ��ɰ汾�� PHP �������ڵ��� session_start ����֮���ٵ��� session_name ������ �°汾�� PHP ���������������ˡ�
 session_resetThe return type of this function is bool now. Formerly, it has been void.
 session_set_cookie_params�ɹ�ʱ���� TRUE�� ������ʧ��ʱ���� FALSE�� ֮ǰ�汾���Ƿ��� void �ġ�
 session_write_closeThe return type of this function is bool now. Formerly, it has been void.
 unpackfloat and double types supports both Big Endian and Little Endian.
 SQLite3::openBlobThe flags parameter has been added, allowing to write BLOBs; formerly only reading was supported.
7.1.5IntlDateFormatter::formatSupport for providing general DateTimeInterface objects to the value parameter was added. Formerly, only proper DateTime objects were supported.
7.1.4PDO::sqliteCreateFunctionThe flags parameter has been added.
 SQLite3::createFunctionThe flags parameter has been added.
7.1.0DateInterval::formatThe F and f format characters were added.
 DateTime::setTime���� microseconds ������
 array_rand���õ�����������㷨�� libc rand �����ij�÷ɭ��ת α����������㷨��
 getenv���ڿ���ʡ�� varname ���������л��������Ĺ������� array��
 getopt��� optind ������
 grapheme_extractSupport for negative starts has been added.
 grapheme_striposSupport for negative offsets has been added.
 grapheme_strposSupport for negative offsets has been added.
 hash_algos���� sha512/224��sha512/256��sha3-224��sha3-256��sha3-384 �Լ� sha3-512 �㷨��֧�֡�
 iconv_strposSupport for negative offsets has been added.
 json_decodeAn empty JSON key ("") can be encoded to the empty object property instead of using a key with value _empty_.
 json_encode�� Double ��ֵ���б���ʱ��ʹ�� serialize_precision ���� precision��
 list���ڿ���ָ�� list �еļ��� ��Ϳ��Խ⹹�����ּ�������˳������顣
 long2ip���� proper_address �����ʹ� string �ij� integer��
 mb_eregmb_ereg will now set regs to an empty array, if nothing matched. Formerly, regs was not modified in that case.
 mb_ereg_replaceThe e modifier has been deprecated.
 mb_ereg_search_setposSupport for negative positions has been added.
 mb_eregimb_eregi will now set regs to an empty array, if nothing matched. Formerly, regs was not modified in that case.
 mb_eregi_replaceThe e modifier has been deprecated.
 mb_strimwidth֧�ָ����� start �� width��
 mb_stripos֧�� offset ʹ�ø�����
 mb_strpos֧�ָ����� offset��
 openssl_decrypt����� tag �� aad ������
 openssl_encrypt������ tag��aad��tag_length ����
 openssl_pkey_new����� curve_name ���ò���ʹ�ÿ��Դ��� EC ��Կ��
 session_start�� session_start ִ��ʧ�ܣ� �޷���ʼһ���Ự��ʱ�򣬻᷵�� FALSE�� ���Ҳ����ʼ���������� $_SESSION��
 shuffle���õ�����������㷨�� libc rand �����ij� ÷ɭ��תα����������㷨��
 str_shuffle���õ�����㷨�� libc rand �����ij���÷ɭ��ת��α����������㷨��
 stripos��ʼ֧�ָ����� offset��
 strpos��ʼ֧�ָ����� offset��
 substr_count��ʼ֧�ָ����� offset �� length��
 unpackThe optional offset has been added.
7.1DateTime::__construct΢�벿�ֲ����� '00000' �ˣ�������ʵ��΢�����ݡ�
7.0.15,7.1.1pack�����"e","E","g"��"G"����������float��double���ֽ�˳��֧�֡�
7.0.11iconv_substr��� str �ȳ��� offset ���ַ��� �����ؿ��ַ�����֮ǰ�İ汾���������ǻ᷵�� FALSE �ġ�
7.0.10SQLite3::__constructThe filename can now be empty to use a private, temporary on-disk database.
7.0.7curl_setopt���� CURL_HTTP_VERSION_2�� CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE�� CURL_HTTP_VERSION_2TLS�� CURL_REDIR_POST_301�� CURL_REDIR_POST_302�� CURL_REDIR_POST_303�� CURL_REDIR_POST_ALL�� CURL_VERSION_KERBEROS5�� CURL_VERSION_PSL�� CURL_VERSION_UNIX_SOCKETS�� CURLAUTH_NEGOTIATE�� CURLAUTH_NTLM_WB�� CURLFTP_CREATE_DIR�� CURLFTP_CREATE_DIR_NONE�� CURLFTP_CREATE_DIR_RETRY�� CURLHEADER_SEPARATE�� CURLHEADER_UNIFIED�� CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE�� CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE�� CURLMOPT_MAX_HOST_CONNECTIONS�� CURLMOPT_MAX_PIPELINE_LENGTH�� CURLMOPT_MAX_TOTAL_CONNECTIONS�� CURLOPT_CONNECT_TO�� CURLOPT_DEFAULT_PROTOCOL�� CURLOPT_DNS_INTERFACE�� CURLOPT_DNS_LOCAL_IP4�� CURLOPT_DNS_LOCAL_IP6�� CURLOPT_EXPECT_100_TIMEOUT_MS�� CURLOPT_HEADEROPT�� CURLOPT_LOGIN_OPTIONS�� CURLOPT_PATH_AS_IS�� CURLOPT_PINNEDPUBLICKEY�� CURLOPT_PIPEWAIT�� CURLOPT_PROXY_SERVICE_NAME�� CURLOPT_PROXYHEADER�� CURLOPT_SASL_IR�� CURLOPT_SERVICE_NAME�� CURLOPT_SSL_ENABLE_ALPN�� CURLOPT_SSL_ENABLE_NPN�� CURLOPT_SSL_FALSESTART�� CURLOPT_SSL_VERIFYSTATUS�� CURLOPT_STREAM_WEIGHT�� CURLOPT_TCP_FASTOPEN�� CURLOPT_TFTP_NO_OPTIONS�� CURLOPT_UNIX_SOCKET_PATH�� CURLOPT_XOAUTH2_BEARER�� CURLPROTO_SMB�� CURLPROTO_SMBS�� CURLPROXY_HTTP_1_0�� CURLSSH_AUTH_AGENT �� CURLSSLOPT_NO_REVOKE��
7.0.0array_columninput �������ڿ����ǰ�����������顣
 assertassert is now a language construct and not a function. assertion can now be an expression. The second parameter is now interpreted either as an exception (if a Throwable object is given), or as the description supported from PHP 5.4.8 onwards.
 curl_setopt���� CURLOPT_SAFE_UPLOAD ��ѡ���ѱ�ɾ���ˡ� ���е� curl �ļ����ϴ�������ʹ�� CURLFile��
 define���� array ��ֵ��
 dlPHP-FPM ģʽ���ѽ��� dl��
 getrusage�˺������ڿ�ʼ֧�� Windows��
 json_decodeAn empty PHP string or value that after casting to string is an empty string (NULL, FALSE) results in JSON syntax error.
 json_decodeRejected RFC 7159 incompatible number formats - top level (07, 0xff, .1, -.1) and all levels ([1.], [1.e1])
 keyarray �������ǻᴫֵ�� �ڴ�֮ǰ�����ᾡ���ܴ����ã�����ʹ�ֵ��
 listlist ���ʽ���ٿ�����ȫΪ�ա�
 list��ֵ������˳�����˱仯��
 list�ַ����޷��ٱ������unpack����
 mktimeis_dst�����Ѿ����Ƴ���
 openssl_open����� iv ����
 openssl_seal��� iv ������
 preg_replace����֧�� /e���η��� ���� preg_replace_callback ���档
 session_regenerate_idsession_regenerate_id �����ڹرչ��ڻỰ֮ǰ�������е����ݡ�
 session_set_save_handler������ѡ���� validate_sid �� ���� update_timestamp��
 session_start�¼� options ������
 shmop_closeThe type of shmid has been changed from int to resource.
 shmop_deleteThe type of shmid has been changed from int to resource.
 shmop_openThe return type of shmop_open has been changed from int to resource.
 shmop_readThe type of shmid has been changed from int to resource.
 shmop_sizeThe type of shmid has been changed from int to resource.
 shmop_writeThe type of shmid has been changed from int to resource.
 substr��� string ���ַ��������� start ��ͬʱ������һ�����ַ�������֮ǰ�İ汾�У�������������� FALSE ��
 IntlDateFormatter::setTimeZoneIdThis function has been removed.
5.6.6json_encodeoptions �������ӳ����� JSON_PRESERVE_ZERO_FRACTION
5.6.5cryptWhen the failure string "*0" is given as the salt, "*1" will now be returned for consistency with other crypt implementations. Prior to this version, PHP 5.6 would incorrectly return a DES hash.
5.6.3pack�����“q”��“q”��“J”��“P”������֧�ִ���64λ���֡�
5.6.1sem_acquireThe $nowait parameter was added.
5.6.0array_fillnum ���ڿ������㡣 ֮ǰ num ��������㡣
 array_filter��ӿ�ѡ�IJ��� flag���Լ����� ARRAY_FILTER_USE_KEY �� ARRAY_FILTER_USE_BOTH��
 cryptRaise E_NOTICE security warning if salt is omitted.
 curl_setoptĬ�� CURLOPT_SAFE_UPLOADΪ TRUE ��
 curl_setopt�Ƴ� CURLOPT_CLOSEPOLICY����ص�ֵ��
 hash_algos����� gost-crypto �㷨��֧�֡� ���� RFC 4357��11.2 С�� ����� CryptoPro S-box ���ʵ�� GOST ��ϣ������
 html_entity_decodeThe default value for the encoding parameter was changed to be the value of the default_charset configuration option.
 htmlentitiesThe default value for the encoding parameter was changed to be the value of the default_charset configuration option.
 htmlspecialcharsThe default value for the encoding parameter was changed to be the value of the default_charset configuration option.
 json_decodeInvalid non-lowercased variants of the true, false and null literals are no longer accepted as valid input, and will generate warnings.
 mb_regex_encodingDefault encoding is changed to UTF-8. It was EUC-JP Previously.
 mcrypt_create_ivsource ������Ĭ��ֵ�� MCRYPT_DEV_URANDOM��
 mcrypt_decrypt���ٽ�����Ч���ȵ� key and iv ������ �������������Ч���� mcrypt_decrypt ������������沢�ҷ��� FALSE�� ֮ǰ�汾�У����ڳ��Ȳ������Կ�ͳ�ʼ������������� '\0' ʹ��ﵽ��Ч���ȡ�
 mcrypt_encrypt���ٽ�����Ч���ȵ� key and iv ������ �������������Ч���� mcrypt_decrypt ������������沢�ҷ��� FALSE�� ֮ǰ�汾�У����ڳ��Ȳ������Կ�ͳ�ʼ������������� '\0' ʹ��ﵽ��Ч���ȡ�
 pg_lo_truncateAdded truncate function. It supports PostgreSQL 9.3's 64bit large object. Both client and server must support PostgreSQL 9.3 and PHP must be 64bit build to use 64bit large object.
 stream_socket_enable_cryptoThe crypto_type is now optional.
 stream_socket_enable_cryptoIntroduce STREAM_CRYPTO_METHOD_ANY_CLIENT, STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT, STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT, STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT, STREAM_CRYPTO_METHOD_ANY_SERVER, STREAM_CRYPTO_METHOD_TLSv1_0_SERVER, STREAM_CRYPTO_METHOD_TLSv1_1_SERVER, STREAM_CRYPTO_METHOD_TLSv1_2_SERVER.
 ReflectionClass::newInstanceWithoutConstructorAll internal classes can now be instantiated except for those declared final.
 XMLReader::getAttributeNoXMLReader::getAttributeNo now returns NULL if the attribute doesn't exist.
 XMLReader::getAttributeNsXMLReader::getAttributeNS now returns NULL if the attribute doesn't exist.
5.5.38, 5.6.24, 7.0.9getenv��� local_only ������
5.5.21cryptWhen the failure string "*0" is given as the salt, "*1" will now be returned for consistency with other crypt implementations. Prior to this version, PHP 5.5 (and earlier branches) would incorrectly return a DES hash.
5.5.19/5.6.3imagescaleThe calculation of the height if new_height was negative or omitted was fixed; prior to these versions, the aspect ratio was not maintained correctly.
5.5.11substr_comparelength ������ 0��
5.5.8DatePeriod::__constructend type changed to DateTimeInterface. Previously, DateTime.
5.5.7apache_request_headers�˺��������� CLI server��
 apache_response_headers�˺��������� CLI server.
 getallheaders�˺��������� CLI server��
5.5.2DOMDocument::schemaValidateAdded the flags parameter
 DOMDocument::schemaValidateSourceAdded the flags parameter
5.5.1hex2bin���������ַ�������Ч��ʮ�������ַ������׳�һ�����棬
 session_set_save_handler�����ѡ���� create_sid��
5.5.0/PECL 3.0.0IntlDateFormatter::createAn IntlCalendar object is allowed for calendar. Objects of type IntlTimeZone and DateTimeZone are allowed for timezone. Invalid timezone identifiers (including empty strings) are no longer allowed for timezone. If NULL is given for timezone, the timezone identifier given by date_default_timezone_get will be used instead of ICU?s default.
 IntlDateFormatter::formatSupport for providing IntlCalendar objects to the value parameter was added.
 IntlDateFormatter::setCalendarIt became possible to pass an IntlCalendar object.
5.5.0DatePeriod::__constructstart type changed to DateTimeInterface. Previously, DateTime.
 curl_setopt��� cURL ��Դ��Ϊ CURLOPT_PROGRESSFUNCTION �ص������ĵ�һ��������
 curl_setopt���� CURLOPT_SHARE��
 emptyempty ����֧�ֱ��ʽ�ˣ����������DZ�����
 ip2longPrior to this version, on Windows ip2long would sometimes return a valid number even if passed a value which was not an (IPv4) Internet Protocol dotted address.
 json_encode������ JSON_PARTIAL_OUTPUT_ON_ERROR ѡ�
 json_encodeʧ��ʱ���ص�ֵ�� null �ַ����ij� FALSE��
 json_encode���� depth ������
 pack“Z”�����������“a”��Ч�Ĺ��ܣ���ʵ��Perl�����ԡ�
 php_logo_guidphp_logo_guid �� PHP ���Ƴ���
 preg_replace/e ���η��Ѿ��������ˡ�ʹ�� preg_replace_callback ���档�μ��ĵ��� PREG_REPLACE_EVAL ���ڰ�ȫ���յĸ�����Ϣ��
 setcookie���͸��ͻ��˵� Set-Cookie ͷ���ڻ���� Max-Age ���ԡ�
 setrawcookie���͸��ͻ��˵� Set-Cookie ͷ���ڻ���� Max-Age ���ԡ�
 unpackChanges were made to bring this function into line with Perl: The "a" code now retains trailing NULL bytes. The "A" code now strips all trailing ASCII whitespace (spaces, tabs, newlines, carriage returns, and NULL bytes). The "Z" code was added for NULL-padded strings, and removes trailing NULL bytes.
 zend_logo_guidzend_logo_guid �� PHP ���Ƴ��ˡ�
 IntlDateFormatter::setTimeZoneIdThis function has been deprecated.
 SoapClient::SoapClientNew ssl_method option.
5.4.43, 5.5.27, 5.6.11escapeshellcmd��̾�Żᱻ�ո����滻��
5.4.32, 5.5.16ucwords������ delimiters ������
5.4.8assert�����˲��� description�� description ����Ҳ��Ϊ���ĸ������ṩ�� ASSERT_CALLBACK ģʽ��Ļص�������
 mb_strcutPassing NULL as length extracts all bytes to the end of the string. Prior to this version NULL was treated the same as 0.
 mb_substrlength ���� NULL����� start ��ȡ���ַ����Ľ�β���� ��֮ǰ�İ汾� NULL �ᱻ���� 0 ������
5.4.7parse_url�޸��� host �� Э�� ʡ��ʱ��ʶ��
5.4.4hex2bin���������ַ����ж��ཫ�׳��쳣�� PHP 5.4.0 ���ַ���������Ĭ�ؽ��ܣ����������ֽڻᱻ�ضϡ�
5.4.0/PECL 2.0.0b1idn_to_asciiAdded the parameters variant and idna_info; UTS #46 support (requires ICU ≥ 4.6).
 idn_to_utf8Added the parameters variant and idna_info; UTS #46 support (requires ICU ≥ 4.6).
5.4.0DOMDocument::loadHTMLAdded options parameter.
 DOMDocument::loadHTMLFileAdded options parameter.
 apache_child_terminate�ú���ĿǰҲ��������FastCGIģʽ�ˡ���ǰ��������PHP��ΪApapche��ģ�鰲װʱ֧�֡�
 apache_request_headers�˺��������� FastCGI�� ��ǰ����PHP�� Apache ģ�鷽ʽ����ʱ֧�֡�
 apache_response_headers�˺��������� FastCGI�� ��ǰ����PHP�� Apache ģ�鷽ʽ����ʱ֧�֡�
 array_combine���޸������ڰ汾������ǿ�����ͱ�E_WARNING�Ĵ��ҷ���FALSE��
 array_multisortarray1_sort_flags ���� SORT_NATURAL �� SORT_FLAG_CASE ѡ�
 date_default_timezone_get����ʹ�� TZ ���Ʋ�ʱ����
 date_default_timezone_get���ٸ��ݲ���ϵͳ����Ϣ���Ʋ�ʱ������Ϊ���Dz��ɿ��ġ�
 define_syslog_variablesThis function was removed from PHP.
 dns_get_record�����˲���raw��
 empty�������ֵ��ַ���ƫ�����᷵�� TRUE.
 filter_input_array��� add_empty ����.
 filter_var_array��� add_empty ������
 get_html_translation_tableThe constants ENT_HTML401, ENT_XML1, ENT_XHTML and ENT_HTML5 were added.
 get_html_translation_tableThe default value for the encoding parameter was changed to UTF-8.
 get_magic_quotes_gpcʼ�շ��� FALSE����Ϊ���ħ�����Ź����Ѿ��� PHP ���Ƴ��ˡ�
 get_magic_quotes_runtime���Ƿ��� FALSE����Ϊħ�����ţ�magic quotes�������Ѿ��� PHP ���Ƴ���
 getallheaders�˺��������� FastCGI�� ��ǰ����PHP�� Apache ģ�鷽ʽ����ʱ֧�֡�
 gzcompressAdded encoding parameter.
 gzdeflateAdded encoding parameter.
 gzencodeFORCE_DEFLATE now generates RFC 1950 compliant output.
 hashtiger �㷨ʹ�ô�ˣ�big-endian���ֽ��򡣲μ������ʾ����
 hash_algos������� joaat��fnv132 �� fnv164 �㷨��֧�֡��Ƴ� Salsa10 �� Salsa20 �㷨��
 html_entity_decodeDefault encoding changed from ISO-8859-1 to UTF-8.
 html_entity_decodeThe constants ENT_HTML401, ENT_XML1, ENT_XHTML and ENT_HTML5 were added.
 htmlentitiesencoding ������Ĭ��ֵ�ij� UTF-8��
 htmlentities���ӳ��� ENT_SUBSTITUTE�� ENT_DISALLOWED�� ENT_HTML401�� ENT_XML1�� ENT_XHTML�� ENT_HTML5��
 htmlspecialcharsencoding ������Ĭ��ֵ�ij� UTF-8��
 htmlspecialchars���ӳ��� ENT_SUBSTITUTE�� ENT_DISALLOWED�� ENT_HTML401�� ENT_XML1�� ENT_XHTML�� ENT_HTML5��
 htmlspecialchars_decode������ ENT_HTML401��ENT_XML1�� ENT_XHTML �� ENT_HTML5 �ȳ�����
 http_build_query������ enc_type ������
 iconv����汾���ַ��Ƿ�ʱ��᷵�� FALSE������������ַ���ָ���� //IGNORE �� ��֮ǰ�汾�����᷵��һ�����ַ�����
 imagewebp֧�ְ� resource ����Ϊ to �������롣
 isset����ַ��ķ�����ƫ�������᷵�� FALSE��
 json_decodeThe options parameter was added.
 json_encodeoptions �������ӳ����� JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, �� JSON_UNESCAPED_UNICODE��
 mb_encode_numericentityAdded is_hex parameter.
 number_formatThis function now supports multiple bytes in dec_point and thousands_sep. Only the first byte of each separator was used in older versions.
 openssl_decrypt�� raw_output ������ options��
 openssl_encryptraw_output �ĵ� options��
 preg_match_all����matches��Ϊ��ѡ�ġ�
 scandirsorting_order now accepts constants. Any nonzero value caused descending order in previous versions.
 session_set_save_handler���� SessionHandlerInterface �ӿ��Լ� SessionHandler �࣬�Է����û�ʵ���Զ���ĻỰ�����������
 snmp_set_valueretrievalConstants SNMP_VALUE_PLAIN or SNMP_VALUE_LIBRARY may be combined with SNMP_VALUE_OBJECT resulting different way of representing contents of value array element in return value of GET-function. If no SNMP_VALUE_{PLAIN,LIBRARY} constant is accompanying SNMP_VALUE_OBJECT, SNMP_VALUE_LIBRARY is used. Prior to 5.4.0 SNMP_VALUE_OBJECT effecively meant SNMP_VALUE_OBJECT|SNMP_VALUE_PLAIN.
 sort����� sort_flags �� SORT_NATURAL �� SORT_FLAG_CASE ��֧�֡�
 Phar::setStubAdded len parameter.
 PharData::setStubAdded len parameter.
 SimpleXMLElement::getDocNamespacesAdded from_root parameter.
 SoapClient::SoapClientNew keep_alive option.
5.4grapheme_substrIf length is given and positive and the argument string is shorter than the specified length, all the rest of the string according to start parameter is returned. Previously, FALSE was returned.
5.3.9DateTime::createFromFormat���� format ��ʽ�ַ����ж��� + ��ʽ�ַ���֧�֡�
 dl���ܲ��Ƽ����� PHP-FPM ģʽ�������� dl��
 is_aAdded allow_string parameter
 is_subclass_ofAdded allow_string parameter
5.3.7cryptAdded $2x$ and $2y$ Blowfish modes to deal with potential high-bit attacks.
5.3.6DateTime::modify֧�־��Ե�����ʱ����Ϊ�仯���� ��֮ǰ�İ汾�У���֧����Ա仯����
 DOMDocument::saveHTMLThe node parameter was added.
 array_product���������ڻ���� 1����֮ǰ�˺���������������� 0��
 preg_match��� offset �� subject �ij��Ȼ�Ҫ���򷵻� FALSE��
 preg_match_all��� offset ���� subject �ij̶ȣ������� FALSE��
 PDO_MYSQL DSNPrior to version 5.3.6, charset was ignored.
5.3.4get_html_translation_tableThe encoding parameter was added.
 rawurlencode��Ϊ rawurlencode ʹ���� EBCDIC�����Բ������ַ������ٱ����롣
 sleep��PHP 5.3.4֮ǰ��Windowsƽ̨������ sleep �Ƿ�ɹ����ã����ǻ᷵��һ�� NULL��
 strip_tagsstrip_tags ignores self-closing XHTML tags in allowable_tags.
 IntlDateFormatter::formatSupport for providing DateTime objects to the value parameter was added.
5.3.3DOMXPath::evaluateThe registerNodeNS parameter was added.
 DOMXPath::queryThe registerNodeNS parameter was added.
 json_encodeoptions �������ӳ�����JSON_NUMERIC_CHECK��
 ldap_sasl_bindSupport on Windows was added.
 openssl_decrypt��� iv ������
 openssl_encrypt���� iv ������
 parse_url�� URL ����ʧ��ʱ��������� E_WARNING ����Ĵ���
5.3.2crypt������ Blowfish �㷨���ڷǷ�ѭ�����µ����⣬����“ʧ��”�ַ�����“*0” �� “*1”��������ת��ʹ�� DES �㷨��
 crypt���� Ulrich Drepper ��ʵ�֣��������� SHA-256 �㷨�� SHA-512 �㷨�� crypt��
 flock���ļ���Դ����ر�ʱ�����Զ�����������Ҫ���������ֶ����С�
 gmp_initThe base was extended from 2 to 36, to 2 to 62 and -2 to -36.
 gmp_strvalThe base was extended from 2 to 36, to 2 to 62 and -2 to -36.
5.3.1get_defined_constants�������� Windows���ں˳������ൽ Core��֮ǰ�� mhash��
 ibase_queryOn success the function now returns TRUE if there were no affected rows, where it previously returned 0 (a zero followed by an empty space).
 rename������ Windows �Ͽ������� rename �ļ���
5.3.0 ��get_classobject Ĭ�ϲ��������� NULL �����ԣ����ڴ��� NULL �� object ����ʱ����û�������Ľ��һ����
5.3.0DateTime::__construct��� time ��������һ����Ч�� ����/ʱ���ʽ�� ���׳��쳣�� ��֮ǰ�İ汾���ǻᷢ��һ������
 DateTime::modify������ֵ��NULL��Ϊ DateTime ���͡�
 DateTime::setDate������ֵ��NULL��Ϊ DateTime ���͡�
 DateTime::setISODate������ֵ��NULL��Ϊ DateTime ���͡�
 DateTime::setTime������ֵ��NULL��Ϊ DateTime ���͡�
 DateTime::setTimezone������ֵ��NULL��Ϊ DateTime ���͡�
 DateTimeZone::getTransitionsThe optional timestamp_begin and timestamp_end were added.
 DateTimeZone::listIdentifiers��ӿ�ѡ�� what �� country ������
 acoshThis function is now available on all platforms
 array_multisortarray1_sort_flags ����ѡ�� SORT_LOCALE_STRING��
 array_reduce�޸� initial ���ͣ������� mixed��֮ǰֻ���� integer��
 array_searchAs with all internal PHP functions as of 5.3.0, array_search returns NULL if invalid parameters are passed to it.
 asinh�˺���������ƽ̨�Ͼ�����
 atanh�˺���������ƽ̨�϶���������
 call_user_func�������������Ĺؼ��ֵĽ���������ǿ���ڴ�֮ǰ��ʹ������ð��������һ����������һ��������������Ϊ��������Ϊ�ص������Ļ������ᷢ��һ��E_STRICT�ľ��棬��Ϊ�������IJ�������Ϊ��̬������
 call_user_func_array�������������Ĺؼ��ֵĽ���������ǿ���ڴ�֮ǰ��ʹ������ð��������һ����������һ��������������Ϊ��������Ϊ�ص������Ļ������ᷢ��һ��E_STRICT�ľ��棬��Ϊ�������IJ�������Ϊ��̬������
 checkdnsrr���������Windowsƽ̨��Ҳ����ʹ���ˡ�
 clearstatcache�����˿�ѡ�� clear_realpath_cache �� filename ����.
 copy�����˶� context ��֧�֡�
 cryptPHP ���ڰ��������Լ��� MD5 Crypt ʵ�֣�������׼ DES �㷨����չ�� DES �㷨�Լ� Blowfish �㷨�����ϵͳȱ����Ӧ��ʵ�֣���ô PHP ��ʹ�����Լ���ʵ�֡�
 curl_setopt���� CURLOPT_PROGRESSFUNCTION��
 date_default_timezone_set���ڻ��׳� E_WARNING ������ E_STRICT��
 define_syslog_variablesThis function now throws an E_DEPRECATED notice.
 dl�����ȶ��ԣ�dl ��ijЩ SAPI �б����á��������� dl �� SAPI Ϊ CLI �� Embed�� ʹ�� ��չ����ָ�� ��Ϊ�����
 dns_get_record��������windowsƽ̨��ʹ����������ˡ�
 dns_get_record�ڴ˰汾֮ǰ�����������authns����ֵ�������ͬʱ����addtl��ֵ��
 expm1�˺���������ƽ̨�Ͼ�����
 fgetcsv������ escape ������
 fnmatch�˺�����ʼ�� Windows ƽ̨����Ч��
 func_get_argIf this function is called from the outermost scope of a file which has been included by calling include or require from within a function in the calling file, it now generates a warning and returns FALSE. ����֪����η�����ã�ֱ�Ӳο���2�������ף�
 func_get_arg�ú��������ڲ����б���ʹ�á�
 func_get_argsIf this function is called from the outermost scope of a file which has been included by calling include or require from within a function in the calling file, it now generates a warning and returns FALSE. ����֪����η�����ã�ֱ�Ӳο���2�������ף�
 func_get_args�ú��������ڲ����б���ʹ�á�
 func_num_argsIf this function is called from the outermost scope of a file which has been included by calling include or require from within a function in the calling file, it now generates a warning and returns -1.
 func_num_argsThis function can now be used in parameter lists.
 get_cfg_varget_cfg_var ���޸����ܹ����� "array" �� ini ѡ�
 get_defined_constants�ں˳�������Ϊ Core��֮ǰ�� internal���� Windows �ϣ��ں˳������ൽ mhash��
 get_object_varsThis function now returns NULL if the object isn't an object.
 getimagesizeAdded icon support.
 getmxrrWindows ƽ̨��Ҳ������������ˡ�
 getopt�����˿�ѡֵ��֧�֣���"::"ָ������
 getopt���� longopts ������ϵͳƽ̨�Ͼ����á�
 getopt֧�� "=" ��Ϊ ������ֵ�ķָ�����
 getopt�˺������������ڲ���ϵͳ������Ҳ�ܹ��� Windows �����С�
 hash_algos����� md2��ripemd256��ripemd320��salsa10��salsa20��snefru256 �� sha224 ��ϣ�㷨��֧�֡�
 htmlentities���ӳ��� ENT_IGNORE��
 htmlspecialchars���ӳ��� ENT_IGNORE��
 imagecolorclosesthwb�� Windows ƽ̨�Ͽ���
 imagefilterPixelation support (IMG_FILTER_PIXELATE) was added.
 inet_ntopThis function is now available on Windows platforms.
 inet_ptonThis function is now available on Windows platforms.
 ini_get����������ڣ�֮ǰ�᷵�ؿ��ַ��������ڻ᷵�� FALSE��
 ini_get_all���Ӳ��� details��
 is_aThis function is no longer deprecated, and will therefore no longer throw E_STRICT warnings.
 json_decodeAdded the optional depth. The default recursion depth was increased from 128 to 512
 json_encode���� options ����.
 link�ù����� Windows ƽ̨�¿�ʼ��Ч��Vista�� Server 2008 ����߰汾����
 linkinfoWindows ƽ̨�Ͽ�ʼ���ã�Vista��Server 2008 ����߰汾����
 log1p�˺���������ƽ̨�Ͼ�����
 mb_get_info��Ŀ "http_output_conv_mimetypes" ��ʼ��Ч��
 mcrypt_create_ivMCRYPT_DEV_RANDOM �� MCRYPT_DEV_URANDOM �� Windows ƽ̨Ҳ�����ˡ�
 mcrypt_create_iv������Ҫ��ǰ���� srand ������ �ɱ������Զ���ɵ��á�
 mktimemktime now throws E_DEPRECATED notice if the is_dst parameter is used.
 nl2br������ѡ�� is_xhtml �������ڴ�֮ǰ�����Dz��� '<br />'��
 openssl_open����� method ����
 openssl_seal��� method ������
 parse_ini_fileAdded optional scanner_mode parameter. Single quotes may now be used around variable assignments. Hash marks (#) may no longer be used as comments and will throw a deprecation warning if used.
 pg_lo_importThe optional object_id was added.
 preg_quote�ַ� - ������Ϊ��Ҫת��ġ�
 property_existsThis function checks the existence of a property independent of accessibility.
 rawurlencode���ڷ�����RFC 3986��
 readlink�˺����� Windows ƽ̨�¿��ã�Vista��Server 2008 ����߰汾����
 realpath��֮ǰ�İ汾�У��� *BSD ϵͳ�ϣ���������� path �����ڵĻ���realpath ������������ϵͳ�������� FALSE��
 register_tick_functionTicks are now supported on threaded web server modules.
 round������ mode ����
 session_start�����������ʧ�ܷ��� FALSE�� ֮ǰ�汾������ TRUE��
 setlocaleThis function now throws an E_DEPRECATED notice if a string is passed to the category parameter instead of one of the LC_* constants.
 shm_attachThis function now returns a ��Դ(resource) instead of an integer.
 socket_create_pairThis function is now re-enabled on Windows platforms.
 stream_context_create�����˿�ѡ���� params ��
 stream_socket_pair���������windowsƽ̨������
 stristr������ѡ�� before_needle ������
 strlenPrior versions treated arrays as the string Array, thus returning a string length of 5 and emitting an E_NOTICE level error.
 strstr������ѡ�� before_needle ������
 strtotimePrior to PHP 5.3.0, relative time formats supplied to the time argument of strtotime such as this week, previous week, last week, and next week were interpreted to mean a 7 day period relative to the current date/time, rather than a week period of Monday through Sunday.
 strtotime�� PHP 5.3.0 ֮ǰ�� 24:00 ����һ����Ч�ĸ�ʽ������ strtotime �᷵�� FALSE��
 sybase_connectThe new parameter was added.
 symlink�˺����� Windows ƽ̨�Ͽ��ã�Vista��Server 2008 ����߰汾����
 time_nanosleep����֮��ú�����Windowsƽ̨�¿��á�
 time_sleep_until�Դˣ�������Windowsƽ̨���á�
 touch�ܹ��޸� Windows ��Ŀ¼������޸�ʱ�䡣
 ReflectionFunction::__constructname can now be a closure.
 XMLReader::expandThe parameter basenode was added.
5.2.11get_defined_constantscategorize �������ڿ��Ժ��ʵñ����� �ڴ�֮ǰ��categorize ������Ϊ !is_null($categorize)�������κη� NULL ��ֵ��ǿ�Ƴ������ࡣ
5.2.10array_randThe resulting array of keys is no longer shuffled.
 array_unique�޸Ļ� sort_flags ��Ĭ��ֵΪ SORT_STRING��
 curl_setopt���� CURLOPT_PROTOCOLS, and CURLOPT_REDIR_PROTOCOLS.
 ip2long�ٴ�֮ǰ�İ汾, ip2long ��ʱ�᷵�ؼ�ʹ�ⲻ��һ��IPV4�ı�׼��ַ�����ֵ�ַ��
 natsort�������������ַ��� (���� '00005')���ڱ����ϻ���Ե�����ǰ���㡣
5.2.9array_unique���ӿ�ѡѡ��sort_flags��Ĭ��ֵ SORT_REGULAR�� 5.2.9 ֮ǰ���˺����ڲ�ʹ�� SORT_STRING ����
5.2.8XSLTProcessor::importStylesheetAccepts SimpleXMLElement again which was broken since PHP 5.2.6.
5.2.7parse_ini_fileOn syntax error this function will return FALSE rather than an empty array.
 roundround ���ڲ������޸ķ��� C99 �ı�׼��
 strtotimeIn PHP 5 prior to 5.2.7, requesting a given occurrence of a given weekday in a month where that weekday was the first day of the month would incorrectly add one week to the returned timestamp. This has been corrected in 5.2.7 and later versions.
5.2.6fopen������ѡ�� 'c' �� 'c+'
5.2.5addcslashesThe escape sequences \v and \f were added.
 imagefilterAlpha support for IMG_FILTER_COLORIZE was added.
5.2.4array_slicelength ����Ĭ��ֵ�ij� NULL�� ���� length Ϊ NULL ʱ����˼��˵ʹ�� array �ij��ȡ� ֮ǰ�İ汾� NULL �� length ����˼�dz���Ϊ�㣨ɶҲ�����أ���
 checkdnsrr������TXT�ļ�¼���͡�
 curl_setopt������ CURLOPT_PRIVATE��
 get_loaded_extensions����˿�ѡ�� zend_extensions ������
 ldap_first_attributeThe ber_identifier was removed. This is now handled automatically by PHP.
 ldap_next_attributeThe ber_identifier was removed. This is now handled automatically by PHP.
 parse_ini_file��������ɵļ�����С�����ᱻ PHP ������������������� 0 ��ͷ�����ֻᱻ�����˽��ƶ��� 0x ��ͷ�Ļᱻ����ʮ�����ơ�
 stream_wrapper_register��� flags ����.
5.2.3getimagesizeRead errors generated by this function downgraded to E_NOTICE from E_WARNING.
 htmlentities���Ӳ��� double_encode��
 htmlspecialchars���Ӳ��� double_encode��
 json_decodeThe nesting limit was increased from 20 to 128
 XMLWriter::writeElementThe content parameter became optional.
 XMLWriter::writeElementNsThe content parameter became optional.
 PDOStatement::getColumnMetatable �ֶ�
5.2.2 - 5.2.6substrIf the start parameter indicates the position of a negative truncation or beyond, false is returned. Other versions get the string from start.
5.2.2DOMDocument::registerNodeClassPrior to 5.2.2, a previously registered extendedclass had to be unregistered before being able to register a new class extending the same baseclass.
 date_sun_infoThe order of latitude and longitude has been swapped.
 ftp_ssl_connect��ǰ�汾�У�����޷�ʹ�� SSL ���ӣ����᷵��һ���� SSL �����ӣ� �� 5.2.2 �汾���޸�Ϊ���� FALSE
 phpinfo������“�Ѽ��ص������ļ�”��Ϣ��֮ǰֻ����“�����ļ�·��(php.ini)"��
 preg_match����������Խ���(?<name>)�� (?'name') �Լ�(?P<name>)�﷨��֮ǰ�汾������(?P<name>)�﷨��
 preg_match_all�����������﷨���Խ���(?<name>)��(?'name')�Լ� (?P<name>)�ˡ� ֮ǰ�汾������(?P<name>)��ʽ��
 proc_terminate֮ǰ�İ汾���������ٽ��� resource��
 token_get_allLine numbers are returned in element 2
5.2.1json_decodeAdded support for JSON decoding of basic types.
 memory_get_peak_usageʹ�ô˺��������ڱ���ʱ���� --enable-memory-limit ѡ�
 memory_get_usage����Ҫ�ڱ���ʱʹ�� --enable-memory-limit ѡ����ܹ�ʹ�����������
 mt_srandThe Mersenne Twister implementation in PHP now uses a new seeding algorithm by Richard Wagner. Identical seeds no longer produce the same sequence of values they did in previous versions. This behavior is not expected to change again, but it is considered unsafe to rely upon it nonetheless.
 proc_openΪ other_options �������� bypass_shell ѡ�
5.2.0base64_decode������ strict ��
 curl_multi_info_readmsgs_in_queue�����롣
 imagettftextIt is now possible to specify an hexadecimal entity in text.
 mb_strrpos�����˿�ѡ���� offset��
 memory_get_peak_usage��Ӳ��� real_usage��
 memory_get_usage�����˲��� real_usage��
 openssl_verify����� signature_alg ������
 pathinfo����˳��� PATHINFO_FILENAME��
 session_get_cookie_params�ڷ��������м��� “httponly”��
 session_set_cookie_params���� httponly ������
 setcookie��� httponly ������
 setrawcookie������ httponly ������
 snmp_set_oid_numeric_printSince PHP 5.2.0.
 PDOStatement::executeinput_parameters �еļ�������� SQL ����������ƥ�䡣PHP 5.2.0 ֮ǰĬ�Ϻ��ԡ�
 SimpleXMLElement::childrenThe optional parameter is_prefix was added.
 SimpleXMLElement::__constructAdded the ns and is_prefix parameters.
 SoapServer::SoapServerAdded the typemap option.
 XMLReader::openencoding and options were added.
 XMLReader::XMLencoding and options were added.
5.1.3curl_getinfo����CURLINFO_HEADER_OUT.
 get_headers�� PHP 5.1.3 �𱾺���ʹ��Ĭ�ϵ��������ģ�������� stream_context_get_default �����趨���޸ġ�
 http_build_query������Ҳ�ᱻת�塣
 mb_get_infoʵ�� "mail_charset"��"mail_header_encoding" �� "mail_body_encoding" ��ʼ��Ч��
 SoapClient::__doRequestThe one_way parameter was added.
 XMLReader::getAttributeReturn NULL if no attribute found. Previously, returned an empty string.
5.1.2date_default_timezone_set���汾��ʼ��֤ timezone_identifier ������
 header����������ڿ���һ������ֹ���������Ϣ�ķ��ͣ��Ӷ���Ϊ�Ա�����Ϣע�빥����һ�ַ�����
 http_build_query�����˲��� arg_separator��
 parse_url�����˲��� component��
 SimpleXMLElement::__constructAdded the options and data_is_url parameters.
5.1.1dateformat ������׼�Ŀ�������/ʱ���ʽ�������� ����
5.1.0DOMDocument::saveAdded the options parameter
 DOMDocument::saveXMLAdded the options parameter
 ctype_digit�� PHP 5.1.0 ֮ǰ���� text ��һ�����ַ�����ʱ�򣬸ú��������� TRUE ��
 curl_setopt���� CURLOPT_AUTOREFERER, CURLOPT_BINARYTRANSFER, CURLOPT_FTPSSLAUTH, CURLOPT_PROXYAUTH, and CURLOPT_TIMECONDITION.
 dateʱ�������Чȡֵ��ΧΪ GMT ʱ��� 1901 �� 12 �� 13 ���� GMT ʱ��� 2038 �� 1 �� 19 �ա� ��32 λ�з���������ȡֵ��Χ���� ���ǣ��� PHP 5.1.0 ֮ǰ�İ汾����ijЩϵͳ������ Windows������Чȡֵ��ΧΪ 1970 �� 1 �� 1 ���� 2038 �� 1 �� 19 �ա�
 date���ڷ��� E_STRICT �� E_NOTICE ʱ������
 date_sunrise���ڷ��� E_STRICT �� E_NOTICE ʱ������
 date_sunset���ڷ��� E_STRICT �� E_NOTICE ʱ������
 explode֧�ָ����� limit
 file_get_contentsAdded the offset and maxlen parameters.
 file_put_contents����˶� LOCK_EX ��֧�ֺ� data �������� stream ��Դ�Ĺ��ܡ�
 gettimeofday�����˲��� return_float��
 globGLOB_ERR was added
 imagerotate������ ignore_transparent ��
 intval������� var �� object�������׳� E_NOTICE ������ 1��
 localtime���ڷ��� E_STRICT �� E_NOTICE ʱ������
 md5_file���������� API������ζ���ܹ���Ϸ�װ��ʹ�øú��������� md5_file('http://example.com/..')��
 mktimeWhen called with no arguments, mktime throws E_STRICT notice. Use the time function instead.
 mktimeis_dst ����������������ʱ�������� FALSE �������� -1�������˱��������Խ��������ղ���ȫΪ�㡣
 mktime���ڷ��� E_STRICT �� E_NOTICE ʱ������
 mssql_connectnew_link��������
 openssl_pkcs7_verify��� content ������
 preg_replace���Ӳ���count.
 preg_replace_callback�����˲���count��
 session_regenerate_id�¼� delete_old_session ������
 sha1_file�ı亯����ʹ���� API������ζ�ſ���ʹ�ð�װ�������� sha1_file('http://example.com/..')��
 str_word_count���� charlist ������
 stream_copy_to_streamAdded the offset parameter
 stream_filter_appendPrior to PHP 5.1.0, this function returns TRUE on success ������ʧ��ʱ���� FALSE.
 stream_filter_prependPrior to PHP 5.1.0, this function returns TRUE on success ������ʧ��ʱ���� FALSE.
 stream_get_contents���Ӳ��� offset ��
 strftime���ڷ��� E_STRICT �� E_NOTICE ʱ������
 strtotime���ڷ��� E_STRICT �� E_NOTICE ʱ������
 strtotimeʧ��ʱ���� FALSE�������� -1��
 substr_compare����ʹ�ø����� offset ������
 substr_count���� offset �� length ������
 XSLTProcessor::registerPHPFunctionsThe restrict parameter was added.
5.0.5php_check_syntax������PHP���Ƴ���
5.0.4msql_fetch_arrayA bug was fixed when retrieving data from columns containing NULL values. Such columns were not placed into the resulting array.
 msql_fetch_objectA bug was fixed when retrieving data from columns containing NULL values. Such columns were not placed into the resulting array.
 msql_fetch_rowA bug was fixed when retrieving data from columns containing NULL values. Such columns were not placed into the resulting array.
5.0.3get_class_varsget_class_vars will only return the properties that can be accessed from the current scope.
 is_subclass_ofYou may also specify the object parameter as a string (the name of the class)
 php_check_syntaxphp_check_syntax֮����� exit �ᵼ��һ���δ���
5.0.2array_slice�����˿�ѡ���� preserve_keys ��
 class_exists����Ϊ�Ѷ���� interface ���� TRUE����ʹ�� interface_exists��
 get_class_varsCalling get_class_vars will now expose all the properties as an array, unlike previous behaviour where protected and private properties were prefixed with nul bytes.
 sort����� SORT_LOCALE_STRING��
 strtotime�� PHP 5 �е� 5.0.2 ֮ǰ��"now" ���������ʱ��ӽ�����ҹ���������ˡ������ȷ�ӵ�ǰʱ�������������汾��ͬ��
5.0.1get_class_varsCalling get_class_vars will expose all properties, as when converting an object to a class.
 php_check_syntaxerror_message ͨ�����ô���
5.0.0apache_get_modules������Apache 1��PHP Apache 2 filter API�� �ڴ�֮ǰ, ֻ������ Apache 2 handler API��
 apache_get_version������ Apache 2 filter API.
 checkdnsrr������AAAA�ļ�¼���͡�
 curl_setopt���� CURLOPT_FTP_USE_EPRT, CURLOPT_NOSIGNAL, CURLOPT_UNRESTRICTED_AUTH, CURLOPT_BUFFERSIZE, CURLOPT_HTTPAUTH, CURLOPT_PROXYPORT, CURLOPT_PROXYTYPE, CURLOPT_SSLCERTTYPE, and CURLOPT_HTTP200ALIASES.
 dirnamedirname �IJ����� PHP 5.0.0 �濪ʼ�Ƕ����ư�ȫ�ġ�
 fgetss���� length �� �˿�ʼ��ѡ��
 file�����˲��� context
 filePrior to PHP 5.0.0 the flags parameter only covered include_path and was enabled with 1
 file_get_contentsAdded context support.
 file_put_contentsAdded context support
 is_aThis function became deprecated in favour of the instanceof operator. Calling this function will result in an E_STRICT warning.
 is_executableis_executable ��ʼ�������� Windows��
 jdtojewish�����˲��� fl��
 mkdirmkdir Ҳ������ijЩ URL ��װЭ�顣�μ� ���б��� mkdir ֧����Щ URL ��װЭ�顣
 mkdir��� recursive ������
 mysql_fetch_objectAdded the ability to return as a different object.
 opendirpath ֧�� ftp:// URL wrapper
 parse_ini_file�ú���Ҳ��ʼ����ѡ��ֵ�ڵ����С�
 realpath�ڴ�֮ǰ�İ汾�У���� path �����˿ջ��� NULL�������� realpath ���ؽű���ǰ��Ŀ¼��
 renamerename Ҳ������ijЩ URL ��װЭ�顣�μ� ���б��� rename ֧����Щ URL ��װЭ�顣
 rmdir�� PHP 5.0.0 �� rmdir Ҳ������ijЩ URL ��װЭ�顣�μ� ���б��� rmdir ֧����Щ URL ��װЭ�顣
 socket_create���� AF_INET6 ֧�֡�
 strip_tagsstrip_tags ��Ϊ�����ư�ȫ�ġ�
 strrpos���� needle ������һ�����ַ����ַ�����
 strrpos���� offset ������
 strtotimeMicroseconds began to be allowed, but they are ignored.
 unlink�� PHP 5.0.0 �� unlink Ҳ��������ijЩ URL ��װЭ�顣�ο� �е��б���Щ��װЭ��֧�� unlink��