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��ͬ string.* ��convert.* ��þͺ��һ��ת�� PHP 5.0.0 ��ӵġ��ָ��ĸ��Ϣ��ο��ú��ֲ�ҳ��

convert.base64-encode�� convert.base64-decodeʹ��ͬ�ڷֱ�� base64_encode()�� base64_decode()��е��ݡ� convert.base64-encode֧��һ��Ĳ�� line-length��base64 �� line-length��ַ�Ϊ ��ȶ��سɿ顣�� line-break-chars��ÿ�齫��ø��ַ��Щ��Ч�� base64_encode()�ټ�� chunk_split()��ͬ��

Example #1 convert.base64-encode & convert.base64-decode


<?php
$fp = fopen('php://output', 'w');
stream_filter_append($fp, 'convert.base64-encode');
fwrite($fp, "This is a test.\n");
fclose($fp);
/* Outputs:  VGhpcyBpcyBhIHRlc3QuCg==  */

$param = array('line-length' => 8, 'line-break-chars' => "\r\n");
$fp = fopen('php://output', 'w');
stream_filter_append($fp, 'convert.base64-encode', STREAM_FILTER_WRITE, $param);
fwrite($fp, "This is a test.\n");
fclose($fp);
/* Outputs:  VGhpcyBp
          :  cyBhIHRl
          :  c3QuCg==  */

$fp = fopen('php://output', 'w');
stream_filter_append($fp, 'convert.base64-decode');
fwrite($fp, "VGhpcyBpcyBhIHRlc3QuCg==");
fclose($fp);
/* Outputs:  This is a test.  */
?>

convert.quoted-printable-encode�� convert.quoted-printable-decodeʹ�ô˹�� decode �汾��ͬ�� quoted_printable_decode()��е��ݡ�û�к� convert.quoted-printable-encode��Ӧ�ĺ�� convert.quoted-printable-encode֧��һ��Ĳ��֧�ֺ� convert.base64-encodeһ��ĸ��Ӳ��⣬ convert.quoted-printable-encode��֧�ֲ�� binary�� force-encode-first�� convert.base64-decodeֻ֧�� line-break-chars��Ϊ�ӱ��غ��а��ʾ��

Example #2 convert.quoted-printable-encode & convert.quoted-printable-decode


<?php
$fp = fopen('php://output', 'w');
stream_filter_append($fp, 'convert.quoted-printable-encode');
fwrite($fp, "This is a test.\n");
/* Outputs:  =This is a test.=0A  */
?>

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