(PHP 5 >= 5.1.0, PHP 7)
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$array1
, array $array2
[, array $...
] ) : array
array_intersect_key() 锟斤拷锟斤拷一锟斤拷锟斤拷锟介，锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷谐锟斤拷锟斤拷锟�
array1 锟叫诧拷同时锟斤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锟斤拷锟斤拷锟叫的硷拷锟斤拷锟斤拷值锟斤拷
array1The array with master keys to check.
array2An array to compare keys against.
...A variable list of arrays to compare.
Returns an associative array containing all the entries of
array1 which have keys that are present in all
arguments.
Example #1 array_intersect_key() 锟斤拷锟斤拷
<?php
$array1 = array('blue' => 1, 'red' => 2, 'green' => 3, 'purple' => 4);
$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan' => 8);
var_dump(array_intersect_key($array1, $array2));
?>
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array(2) {
["blue"]=>
int(1)
["green"]=>
int(3)
}
锟斤拷锟斤拷锟叫匡拷锟皆匡拷锟斤拷只锟斤拷 'blue'
锟斤拷 'green' 锟斤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锟斤拷锟斤拷锟叫ｏ拷锟斤拷吮锟斤拷锟斤拷亍锟斤拷锟斤拷锟阶拷锟�
'blue' 锟斤拷 'green'
锟斤拷值锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟角诧拷同锟侥★拷锟斤拷锟斤拷为只锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷嘶锟斤拷锟狡ワ拷洹ｏ拷锟斤拷氐锟街抵伙拷锟�
array1 锟叫的★拷
锟斤拷 key => value 锟斤拷锟叫碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 (string) $key1 === (string) $key2 时锟斤拷锟斤拷为锟斤拷取锟斤拷锟斤拷浠八碉拷锟街达拷械锟斤拷锟斤拷细锟斤拷锟斤拷图锟介，锟斤拷锟斤拷址锟斤拷锟斤拷谋锟斤拷锟斤拷锟斤拷锟饺伙拷锟斤拷锟�