PHP array_udiff() 实例 - 自学教程(runoops.com)

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>PHP array_udiff() 实例 - 自学教程(runoops.com)</title>
</head>
<body>
​
<?php
function myfunction($a,$b)
{
if ($a===$b)
{
return 0;
}
return ($a>$b)?1:-1;
}
​
$a1=array("a"=>"red","b"=>"green","c"=>"blue","yellow");
$a2=array("A"=>"red","b"=>"GREEN","yellow","black");
$a3=array("a"=>"green","b"=>"red","yellow","black");
​
$result=array_udiff($a1,$a2,$a3,"myfunction");
print_r($result);
​
?>
</body>
​
</html>