代码编辑器：
x
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$a1 = array("a"=>"red","b"=>"green","c"=>"blue");3
$a2 = array("a"=>"red","c"=>"blue","d"=>"pink");4
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$result = array_intersect_key($a1,$a2);6
print_r($result);7
$a1 = array("a"=>"red","b"=>"green","c"=>"blue");$a2 = array("a"=>"red","c"=>"blue","d"=>"pink");$result = array_intersect_key($a1,$a2);print_r($result);