Compare the keys of two arrays with a user-defined key comparison function, return matches in PHP
Description
The following code shows how to compare the keys of two arrays with a user-defined key comparison function, return matches.
Example
//from www .j a va 2 s.c om
<?php
function myfunction($a,$b){
if ($a===$b){
return 0;
}
return ($a>$b)?1:-1;
}
$a1=array("a"=>"red","b"=>"Basic","c"=>"blue");
$a2=array("a"=>"blue","b"=>"black","e"=>"blue");
$result=array_intersect_ukey($a1,$a2,"myfunction");
print_r($result);
?>
The code above generates the following result.
