将多个数组转换为单个数组

Question

我很难弄清楚如何基于cakephp将其转换为单个数组。我是cakephp的新手，还在学习。希望你们能帮我。

'Sizes' => array(
            'girls' => ['7-8', '8', '9-10', '10', '11-12', '12', '13-14'],
            'bras' => ['32A', '32B', '32C', '32D', '34A', '34B', '34C', '34D', '34DD', '36A', '36B', '36C', '36D', '36DD', '38A', '38B', '38C', '38D', '38DD', '40A', '40B', '40C', '40D', '40DD'],
            'size' => ['32', '34', '36', '38', '40', '42', '44', '46', 'XS', 'S', 'M', 'L', 'XL', 'XXL', '2XL', 'XXXL'],
        )

Answer 1

您可以使用array_merge函数。但是，由于PHPVersion7.4，您可以很容易地使用扩展运算符来完成这个任务。但是您也可以使用循环来完成这一任务。见以下示例：

<?php

$a = array(
        'Sizes' => array(
            'girls' => ['7-8', '8', '9-10', '10', '11-12', '12', '13-14'],
            'bras' => ['32A', '32B', '32C', '32D', '34A', '34B', '34C', '34D', '34DD', '36A', '36B', '36C', '36D', '36DD', '38A', '38B', '38C', '38D', '38DD', '40A', '40B', '40C', '40D', '40DD'],
            'size' => ['32', '34', '36', '38', '40', '42', '44', '46', 'XS', 'S', 'M', 'L', 'XL', 'XXL', '2XL', 'XXXL'],
        )
    );

// Method 1: (since 7.4)    
$b = [...$a['Sizes']['girls'], ...$a['Sizes']['bras'], ...$a['Sizes']['size']];

var_dump($b);

// Method 2:
$c = array_merge($a['Sizes']['girls'], $a['Sizes']['bras'], $a['Sizes']['size']);

var_dump($c);

// Method 3:
$d = $a['Sizes']['girls'] + $a['Sizes']['bras'] + $a['Sizes']['size'];

var_dump($d);

注：

• ，+操作符使两个数组合并。
• ，array_merge函数使合并，但重复的键是

Answer 2

$new_array = [];

foreach($Sizes as $v){

    $new_array += $v;

}
echo '<pre>';
print_r($new_array);