Array数组

array_diff_key() 例子

,
, 'purple'
,
, 'yellow'
);

var_dump(array_diff_key($array1,
$array2));
?>

上例输出：array(2) { ["red"]=> int(2) ["purple"]=> int(4) }

array_diff_uassoc() 例子

<?php
function key_compare_func($a,
$b)
{
    if
(;
}

$array1 = array("a" => "green", "b"
=> "brown", "c" =>
"blue", "red");
$array2 = array("a" => "green", "yellow", "red");
$result = array_diff_uassoc($array1, $array2, "key_compare_func");
print_r($result);
?>

上例输出：Array ( [b] => brown [c] => blue [0] => red )