检索嵌套阵列密钥

我要疯了。所以，让我们说，我得到这个数组：检索嵌套阵列密钥

Array 
(

    [0] => Array 
    (
    [variation_name] => variation_1 
    [license_type] => Array 
    (
     [slug] => license_x 
     [price] => price_x 
     [dimensions] => dimensions_x 
    ) 
) 

    [1] => Array 
    (
    [variation_name] => variation_2 
    [license_type] => Array 
    (
     [slug] => license_y 
     [price] => price_y 
     [dimensions] => dimensions_y 
    ) 
) 

    [2] => Array 
    (
    [variation_name] => variation_3 
    [license_type] => Array 
    (
     [slug] => license_solid_z 
     [price] => price_z 
     [dimensions] => dimensions_z 
    ) 
) 
)

，我想回声“license_solid”和包含它的数组的值开始的数组值。要让“license_solid”条目我运行以下命令：

$attribute_pa_licenses = array_column($array, 'license_type'); 
$attribute_pa_license_slug = array_column($attribute_pa_licenses, 'slug'); 

foreach ($attribute_pa_license_slug as $value) { 
    if (0 === strpos($value, 'license_solid')) { 

    echo $value; 
    } 
}

而且DO的作品，但我不理解怎么也呼应阵列在这个例子中，应该给variation_3“含有” $值

来源

2017-02-27 Stockafisso

只是遍历您的数组。然后在循环内部简单地访问'slug'值，并检查它的值是否以'license_solid'开头，如果是，则得到你想要的子阵列。 – Rizier123

如下重写你的foreach循环： -

foreach ($attribute_pa_license_slug as $value) { 
    if(!empty($value['license_type']['slug'])){ 
    $slug = $value['license_type']['slug']; 
    if (strpos($slug, 'license_solid') !== false) { 
    echo $slug; // echo your matched value 
    $data[] = $value; // store your array in data array 
    } 
} 
} 
print_r($data); // print arrays who has valid slug values

来源

2017-02-27 10:41:08

它给我︰“警告：非法字符串偏移量”，如果$值它不是一个数组 – Stockafisso

@RaffaeleProvinciali：请检查更新的答案 –

现在的任何错误，但没有得到任何回声 – Stockafisso

使用的foreach在整个阵列$key说法：

foreach ($array as $key => $value) { 
    $slugValue = $value['license_type']['slug']; 

    if (...) { echo $slugValue; } 

    // $key contains current array index (0..2 for array in example) 
    // $value contains array with variation_name, license_type 
}

来源

2017-02-27 10:24:07 aso

我做到了，但它仍然给我''license_type' – Stockafisso

'foreach（$变化为$ key => $ value）的团体{ $ slugValue = $ value ['attributes'] ['attribute_pa_license'];如果（0 === strpos（$ slugValue，'license_solid'））{ echo''; echo $ slugValue; echo''; }}' – Stockafisso

传统foreach适用于阵列结构已知，但对于结构未知的大阵列array iterator是好的。

看看下面两种方法

<?php 
$array = Array 
(

    '0' => Array 
    (
     'variation_name' => 'variation_1', 
     'license_type' => Array 
     (
      'slug' => 'license_x', 
      'price' => 'price_x', 
      'dimensions' => 'dimensions_x' 
     ) 
    ), 

    '1' => Array 
    (
     'variation_name' => 'variation_2', 
     'license_type' => Array 
     (
      'slug' => 'license_y', 
      'price' => 'price_y', 
      'dimensions' => 'dimensions_y' 
     ) 
    ), 

    '2' => Array 
    (
     'variation_name' => 'variation_3', 
     'license_type' => Array 
     (
      'slug' => 'license_solid_z', 
      'price' => 'price_z', 
      'dimensions' => 'dimensions_z' 
     ) 
    ) 

); 

//METHOD 1 - For known structured array 
foreach($array AS $key => $val) { 
    $slug = $val['license_type']['slug']; 
    if (strpos($slug, 'license_solid') !== false) { 
     $data[] = $array[$key]; 
    } 
} 

print_r($data); 



//METHOD 2 - For unknown structured array (use iterator for unknow and large structured) 
$it = new RecursiveIteratorIterator(new RecursiveArrayIterator($array)); 


$data = array(); 
foreach ($it as $key => $val) { 

    $ar = $it->getSubIterator($it->getDepth() - 1); 
    if($key == 'slug' && strpos($val, 'license_solid') !== false){ 
     $data[] = (array) $ar; 
    } 
} 

print_r($data);

输出：

Array 
(
    [0] => Array 
     (
      [variation_name] => variation_3 
      [license_type] => Array 
       (
        [slug] => license_solid_z 
        [price] => price_z 
        [dimensions] => dimensions_z 
       ) 

     ) 

)

来源

2017-02-27 10:49:20

检索嵌套阵列密钥

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