tryphp_func_array_udiff_assoc.php:
<!DOCTYPE html> <html> <body> <?php function myfunction($a,$b) { if ($a===$b) { return 0; } return ($a>$b)?1:-1; } $a1=array("a"=>"red","b"=>"green","c"=>"blue"); $a2=array("a"=>"red","b"=>"blue","c"=>"green"); $result=array_udiff_assoc($a1,$a2,"myfunction"); print_r($result); ?> </body> </html>
Array ( [b] => green [c] => blue )