tryphp_func_array_intersect_key.php:
<!DOCTYPE html> <html> <body> <?php $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); ?> </body> </html>
Array ( [a] => red [c] => blue )