Question

$testArray = array( 
                array(1,2,"file1.png"), 
                array(1,3,"file2.png"), 
                array(1,4,"file3.png")                    
              );

print_r (array_keys($testArray, array(1,3, "file2.png"))); // Works
print_r (array_keys($testArray, array(1,3))); // Does not work.

如上面的代码所示，我希望能够在多维数组中快速找到一个数组，但仅指定两个值。

Answer 1

您可以通过计算交集来测试哪些数组包含值，从而对数组进行过滤，然后获取这些键：

| ClientCase_ID | AssociatedPerson_ID | AssociatedPersonType | AssociatedType_ID |
|---------------|---------------------|----------------------|-------------------|
|            01 |                  01 |    ResPonsible Party |                16 |
|            02 |                  03 |  Physician Therapist |                24 |

您可以使用搜索$keys = array_keys(array_filter($testArray, function($v) { return count(array_intersect([1,3], $v)) == 2; }));变量对其进行扩展：

$s

这将返回包含$s = [1,3]; $keys = array_keys(array_filter($testArray, function($v) use($s) { return count(array_intersect($s, $v)) == count($s); }));，[1,3]或什至[3,1]，顺序无关的任何子数组的键。

要按顺序检查它们：

[3,"file2.png",1]

Answer 2

执行此操作的一种方法是使用array_map将testArray过滤到相应数量的键，然后使用array_search获取键。

$testArray = array( 
                array(1,2,"file1.png"), 
                array(1,3,"file2.png"), 
                array(1,4,"file3.png")                    
              );

$search = [1,3];
$filtered = array_map(function ($item) use ($search){
    return array_slice($item, 0, count($search));
}, $testArray);

$key = array_search($search, $filtered);
if ($key !== false){
    print_r($testArray[$key]);
} else {
    echo 'not found';
}

Answer 3

这应该有效：

$needle = [1, 3];
$found = [];
foreach ($testArray as $k => $v) {
    if(count(array_intersect_assoc($needle, $v)) == count($needle)) {
        $found[] = $v;
    }
}

echo '<pre>';
$found ? print_r($found) : print_r('not found');

Answer 4

<?php

$data = array( 
    array(1,2,"file1.png"), 
    array(1,3,"file2.png"), 
    array(1,4,"file3.png")
);

$partial_matches = null;
foreach($data as $k => $v)
    if (array_slice($v, 0, 2) == [1,3])
        $partial_matches[] = $k;

var_dump($partial_matches);

输出：

array(1) {
    [0]=>
    int(1)
}

使用array_keys搜索带有部分数组的多维数组

4 个答案: