比较和更新PHP数组

我在PHP中有两个数组：

阵列1

Array
(
    [0] => Array
        (
            [autoid] => t35wmkbg
            [task] => Zaphod
            [progress] => incomplete
        )

    [1] => Array
        (
            [autoid] => cwg2yc5q
            [task] => Arthur
            [progress] => incomplete
        )

    [2] => Array
        (
             [autoid] => 85q4bcmy
             [task] => Ford
             [progress] => incomplete
        )

    [3] => Array
        (
             [autoid] => yc5qcwg2
             [task] => Trillian
             [progress] => incomplete
        )
)

阵列2

Array
(
    [0] => Array
        (
            [autoid] => t35wmkbg
            [task] => Zaphod
            [progress] => complete
        )

    [1] => Array
        (
            [autoid] => 85q4bcmy
            [task] => Ford
            [progress] => incomplete
        )

    [2] => Array
        (
            [autoid] => cwg2yc5q
            [task] => Arthur
            [progress] => pending
        )

)

我需要：

• 单步执行数组1，并检查数组2中是否存在autoid
• 如果确实存在，请更新

  进度

  字段以匹配

因此，使用上述阵列时的理想输出为：

阵列3

Array
(
    [0] => Array
        (
            [autoid] => t35wmkbg
            [task] => Zaphod
            [progress] => complete
        )


    [1] => Array
        (
            [autoid] => cwg2yc5q
            [task] => Arthur
            [progress] => pending
        )

    [2] => Array
        (
             [autoid] => 85q4bcmy
             [task] => Ford
             [progress] => incomplete
        )
 
    [3] => Array
        (
             [autoid] => yc5qcwg2
             [task] => Trillian
             [progress] => incomplete
        )

)

---

如果有人有任何想法或建议，我不确定如何最好地进行此操作。

首先更改arr2，使其索引为

autoid

，然后您可以轻松使用它来获取进度值。 然后只需对arr1进行更改，并将更改应用于

进度

（如果存在）

$arr1 = [
            ['autoid' => 't35wmkbg','task' => 'Zaphod','progress' => 'incomplete'],
            ['autoid' => 'cwg2yc5q', 'task' => 'Arthur', 'progress' => 'incomplete'],
            ['autoid' => '85q4bcmy', 'task' => 'Ford', 'progress' => 'incomplete'],
            ['autoid' => 'yc5qcwg2', 'task' => 'Trillian', 'progress' => 'incomplete']
        ];

$arr2 = [
            ['autoid' => 't35wmkbg', 'task' => 'Zaphod', 'progress' => 'complete'],
            ['autoid' => '85q4bcmy', 'task' => 'Ford', 'progress' => 'incomplete'],
            ['autoid' => 'cwg2yc5q', 'task' => 'Arthur', 'progress' => 'pending']
        ];

#first make arr2 indexable on the autoid
foreach ($arr2 as $a) {
    $arr2search[$a['autoid']] = $a;
}

foreach ($arr1 as $a){
    // do we have an autoid in arr2
    if ( isset($arr2search[$a['autoid']])){
        $a['progress'] = $arr2search[$a['autoid']]['progress'];
    }
    $merged[] = $a;
    
}

print_r($merged);

结果

Array
(
    [0] => Array
        ([autoid] => t35wmkbg,  [task] => Zaphod,  [progress] => complete)

    [1] => Array
        ([autoid] => cwg2yc5q, [task] => Arthur, [progress] => pending )

    [2] => Array
        ([autoid] => 85q4bcmy,  [task] => Ford,  [progress] => incomplete )

    [3] => Array
        ([autoid] => yc5qcwg2, [task] => Trillian, [progress] => incomplete )
)

---

这是一个非常简单的任务，涉及一个循环和一些

if

条件。试一试，如果您的代码有特定问题，请将其编辑到问题中。