删除数组中某个值元素

作者：袖梨 2022-06-24
 代码如下 复制代码
$a1 = array(array('blue','red','www.111com.net'),array('black','pink','green'));
$a2 = array('aaa','pink','bbbb');
$str = 'red';
$a2[] = $str;
foreach($a1 as $key => $value)
{       
$a1[$key] = array_diff($value,$a2);
}
print_r($a1);


//更简单的做法

 代码如下 复制代码
foreach (array_diff($a1, $a2) as $_key_1) {
        $arr_new[$_key_1] = $arr_1[$_key_1];
}


/*
结果如下：

array
(
    [0] => array
        (
            [0] => blue
            [2] => yellow
        )


    [1] => array
        (
            [0] => black
            [2] => green
        )


)

array_diff语法

array array_diff ( array $array1 , array $array2 [, array $ ... ] )
对比较array1和array2返回差异。
*/
$array1 = array("a" => "green", "111com.net", "blue", "red");
$array2 = array("b" => "green", "yellow", "red");
$result = array_diff($array1, $array2);

print_r($result);

/*
array
(
    [1] => blue
)

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