如何在 PHP 中比较两个数组值并获得匹配的内部数组值

Question

如何比较两个数组值并从内部数组中删除重复值并使用 PHP 存储在另一个数组中。由array[name] 比较的数组，并希望删除所有内部数组中的相关索引。

数组 1

Array
(
    [0] => detail12.docx
    [1] => resume.docx
)

数组 2

Array
(
    [name] => Array
        (
            [0] => detail12.docx
            [1] => document.pdf
            [2] => resume.docx
        )

    [type] => Array
        (
            [0] => application/vnd.openxmlformats-officedocument.wordprocessingml.document
            [1] => application/pdf
            [2] => application/vnd.openxmlformats-officedocument.wordprocessingml.document
        )

    [tmp_name] => Array
        (
            [0] => /tmp/php2LK7xC
            [1] => /tmp/phpTEWqXG
            [2] => /tmp/phpAKki0M
        )

    [error] => Array
        (
            [0] => 0
            [1] => 0
            [2] => 0
        )

    [size] => Array
        (
            [0] => 30887
            [1] => 86118
            [2] => 30887
        )

)

预期输出：-

Array
(
    [name] => Array
        (
            [0] => detail12.docx
            [1] => resume.docx
        )

    [type] => Array
        (
            [0] => application/vnd.openxmlformats-officedocument.wordprocessingml.document
            [1] => application/vnd.openxmlformats-officedocument.wordprocessingml.document
        )

    [tmp_name] => Array
        (
            [0] => /tmp/php2LK7xC
            [1] => /tmp/phpAKki0M
        )

    [error] => Array
        (
            [0] => 0
            [1] => 0
        )

    [size] => Array
        (
            [0] => 30887
            [1] => 30887
        )
)

我需要上述预期输出中所示的输出。请提供代码以获得解决方案！

Answer 1

此方法将name中未找到的键保存为array_search，稍后使用foreach删除。

$a = ['detail12.docx', 'resume.docx'];
$b = [
    'name' => ['detail12.docx', 'document.pdf', 'resume.docx', 'test.php'],
    'type' => ['application/vnd.openxmlformats-officedocument.wordprocessingml.document', 'application/pdf', 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', 'test']
];
$keys = [];
foreach($b['name'] as $index => $value){
    if(array_search($value, $a) === false){
        $keys[] = $index;
    }
}
foreach($b as $index => $array){
    foreach($keys as $key){
        unset($b[$index][$key]);
    }
    $b[$index] = array_values($b[$index]);
}
print_r($b);

输出：

Array
(
    [name] => Array
        (
            [0] => detail12.docx
            [1] => resume.docx
        )

    [type] => Array
        (
            [0] => application/vnd.openxmlformats-officedocument.wordprocessingml.document
            [1] => application/vnd.openxmlformats-officedocument.wordprocessingml.document
        )

)

Fiddle of code - Image of result
附言。当然，我创建了一个包含一些条目的示例，只是作为视觉测试

参考：

• array_search
• foreach
• unset
• array_values