PHP ʖ²ἯTH
º/A
array_key_exists
=ד 1. array_key_exists() =ד
$search_array = array("first" = 1, "second" = 4); if (array_key_exists("first", $search_array)) {echo "The 'first' element is in the array";}
ע: Ԛ PHP 4.0.6 ±¾º¯ʽûΪ key_exists()¡£
º/A
ưµ㼯A
array_intersect
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array_keys