如何在php中从另一个数组中删除一个数组 - How do I remove one array from another in php?

How do I remove one array from another in php?

本文关键字：数组一个删除另一个 php | 更新日期: 2023-09-27

我在PHP中有以下数组：print_r（$employees）=

Array
(
    [0] => Array
        (
            [p_id] => T29083999
            [name] => Robert Plaxo
        )
    [1] => Array
        (
            [p_id] => T29083388
            [name] => Yvan Sergei
        )
    [2] => Array
        (
            [p_id] => T21083911
            [name] => Rhonda Saunders
        )
    [3] => Array
        (
            [p_id] => H02910382
            [name] => Miguel Mercado
        )
)

那么这个数组：print_r（$record）=

Array
(
    [0] => Array
        (
            [c_id] => 1
            [section] => 1061
            [term] => 201631
            [p_id] => T29083388
            [c_date] => 2016-04-01 09:14:00
        )
)

我想从$employees中删除与$record的p_id匹配的数组元素。数组$record可能有多个条目，如图所示。如果是，$record中的任何p_id都必须从$employees中删除。

我试过了：

foreach ($employees as $k => $e) {
    foreach ($record as $r) {
        if ($e['p_id']==$r['p_id']) {
            echo "found it!";
            // if I uncomment the next line, it crashes! (500 server error)
            //  unset $employees[$k];
        }           
    }   
}

我只想从$employees中删除任何元素，该元素具有与该员工id匹配$record中任何记录的任何员工。

你差不多到了；unset() 周围的刚需parens

我还随意更改了您的一些变量名，因为单字符变量名困扰着我。

$employees[] = [
    'p_id' => 'T29083999',
    'name' => 'Robert Plaxo',
];
$employees[] = [
    'p_id' => 'T29083388',
    'name' => 'Yvan Sergei',
];
$employees[] = [
    'p_id' => 'T21083911',
    'name' => 'Rhonda Saunders',
];
$employees[] = [
    'p_id' => 'H02910382',
    'name' => 'Miguel Mercado',
];
$records[] = [
        'c_id' => '1',
        'section' => '1061',
        'term' => '201631',
        'p_id' => 'T29083388',
        'c_date' => '2016-04-01 09:14:00',
];
foreach ($employees as $key => $employee) {
    foreach ($records as $record) {
        if ($employee['p_id'] == $record['p_id']) {
            echo "found it!";
            unset($employees[$key]);
        }
    }
}
echo "<pre>";
print_r($employees);

输出

found it!
Array
(
    [0] => Array
        (
            [p_id] => T29083999
            [name] => Robert Plaxo
        )
    [2] => Array
        (
            [p_id] => T21083911
            [name] => Rhonda Saunders
        )
    [3] => Array
        (
            [p_id] => H02910382
            [name] => Miguel Mercado
        )
)

使用array_column和array_filter函数的简短解决方案。它也将符合您的要求"Array$record可能有多个条目"：

$p_ids = array_column($record, "p_id");
$employees = array_filter($employees, function($v) use($p_ids){
    return !in_array($v["p_id"], $p_ids);     
});
print_r($employees);

输出：

Array
(
    [0] => Array
        (
            [p_id] => T29083999
            [name] => Robert Plaxo
        )
    [2] => Array
        (
            [p_id] => T21083911
            [name] => Rhonda Saunders
        )
    [3] => Array
        (
            [p_id] => H02910382
            [name] => Miguel Mercado
        )
)