比较键和值两个数组,并返回差异:
<?php
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$a2=array("a"=>"red","b"=>"green","c"=>"blue");
$result=array_diff_assoc($a1,$a2);
print_r($result);
?>
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array_diff_assoc() 函数比较键和值两个(或多个)数组,并返回差异。
此函数比较两个(或多个)数组的键和值,并返回一个包含以下条目的数组数组1不存在于数组2或者数组3, ETC。
array_diff_assoc(
array1,array2,array3...)
Parameter | Description |
---|---|
array1 | Required. The array to compare from |
array2 | Required. An array to compare against |
array3,... | Optional. More arrays to compare against |
返回值: | 返回一个包含条目的数组数组1不存在于任何其他数组中 |
---|---|
PHP 版本: | 4.3+ |
比较键和值两个数组,并返回差异:
<?php
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$a2=array("e"=>"red","f"=>"green","g"=>"blue");
$result=array_diff_assoc($a1,$a2);
print_r($result);
?>
亲自试一试 »
比较键和值三个数组,并返回差异:
<?php
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$a2=array("a"=>"red","f"=>"green","g"=>"blue");
$a3=array("h"=>"red","b"=>"green","g"=>"blue");
$result=array_diff_assoc($a1,$a2,$a3);
print_r($result);
?>
亲自试一试 »
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