锟斤拷锟�

PHP 支锟斤拷 9 锟斤拷原始锟斤拷锟斤拷锟斤拷锟酵★拷

锟斤拷锟街憋拷锟斤拷锟斤拷锟酵ｏ拷

• boolean锟斤拷锟斤拷锟斤拷锟酵ｏ拷
• integer锟斤拷锟斤拷锟酵ｏ拷
• float锟斤拷锟斤拷锟斤拷锟酵ｏ拷也锟斤拷锟斤拷 double)
• string锟斤拷锟街凤拷锟斤拷锟斤拷

锟斤拷锟街革拷锟斤拷锟斤拷锟酵ｏ拷

• array锟斤拷锟斤拷锟介）
• object锟斤拷锟斤拷锟斤拷
• callable锟斤拷锟缴碉拷锟矫ｏ拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷停锟�

• resource锟斤拷锟斤拷源锟斤拷
• NULL锟斤拷锟斤拷锟斤拷锟酵ｏ拷

为锟斤拷确锟斤拷锟斤拷锟斤拷锟斤拷锥锟斤拷裕锟斤拷锟斤拷植峄癸拷锟斤拷锟斤拷锟揭恍�伪锟斤拷锟斤拷锟斤拷

• mixed锟斤拷锟斤拷锟斤拷锟斤拷停锟�
• number锟斤拷锟斤拷锟斤拷锟斤拷锟酵ｏ拷
• callback锟斤拷锟截碉拷锟斤拷锟酵ｏ拷锟街筹拷为 callable锟斤拷
• array|object锟斤拷锟斤拷锟斤拷 | 锟斤拷锟斤拷锟斤拷锟酵ｏ拷
• void 锟斤拷锟斤拷锟斤拷锟酵ｏ拷

锟皆硷拷伪锟斤拷锟斤拷 $...锟斤拷

锟斤拷锟杰伙拷锟斤拷锟斤拷锟揭恍╋拷锟斤拷锟�"双锟斤拷锟饺ｏ拷double锟斤拷"锟斤拷锟酵的参匡拷锟斤拷实锟斤拷锟斤拷 double 锟斤拷 float 锟斤拷锟斤拷同锟侥ｏ拷锟斤拷锟斤拷一些锟斤拷史锟斤拷原锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷同时锟斤拷锟节★拷

锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷通锟斤拷锟斤拷锟斤拷锟缴筹拷锟斤拷员锟借定锟侥ｏ拷确锟叫碉拷说锟斤拷锟斤拷锟斤拷 PHP 锟斤拷锟捷该憋拷锟斤拷使锟矫碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷时锟斤拷锟斤拷锟侥★拷

Note: 锟斤拷锟斤拷锟介看某锟斤拷锟斤拷锟绞�锟斤拷值锟斤拷锟斤拷锟酵ｏ拷锟斤拷 var_dump() 锟斤拷锟斤拷锟斤拷

锟斤拷锟街伙拷锟斤拷锟矫碉拷一锟斤拷锟阶讹拷锟斤拷锟斤拷锟斤拷锟酵的憋拷锓绞斤拷锟斤拷诘锟斤拷裕锟斤拷锟� gettype() 锟斤拷锟斤拷锟斤拷要锟斤拷锟斤拷某锟斤拷锟斤拷锟酵ｏ拷锟斤拷要锟斤拷 gettype()锟斤拷锟斤拷锟斤拷 is_type 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷一些锟斤拷锟斤拷锟斤拷

<?php
$a_bool = TRUE;   // 锟斤拷锟斤拷值 boolean
$a_str  = "foo";  // 锟街凤拷锟斤拷 string
$a_str2 = 'foo';  // 锟街凤拷锟斤拷 string
$an_int = 12;     // 锟斤拷锟斤拷 integer

echo gettype($a_bool); // 锟斤拷锟�:  boolean
echo gettype($a_str);  // 锟斤拷锟�:  string

// 锟斤拷锟斤拷锟斤拷锟斤拷停锟斤拷图锟斤拷锟� 4
if (is_int($an_int)) {
    $an_int += 4;
}

// 锟斤拷锟� $bool 锟斤拷锟街凤拷锟斤拷锟斤拷锟酵达拷印锟斤拷锟斤拷
// (啥也没锟斤拷印锟斤拷锟斤拷)
if (is_string($a_bool)) {
    echo "String: $a_bool";
}
?>

锟斤拷锟揭拷锟揭伙拷锟斤拷锟斤拷锟角匡拷锟阶拷锟轿筹拷锟斤拷停锟斤拷锟斤拷远锟斤拷锟绞癸拷锟�强锟斤拷转锟斤拷锟斤拷锟斤拷 settype() 锟斤拷锟斤拷锟斤拷

注锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷涞笔憋拷锟斤拷锟斤拷锟斤拷锟斤拷囟锟斤拷锟斤拷锟斤拷禄锟斤拷锟街筹拷锟斤拷同锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷息锟斤拷锟斤拷锟斤拷转锟斤拷锟斤拷锟叫憋拷锟斤拷锟斤拷锟解，锟斤拷锟斤拷锟皆参匡拷 PHP 锟斤拷锟酵比较憋拷锟斤拷锟斤拷同锟斤拷锟斤拷锟洁互锟饺较碉拷锟斤拷锟接★拷