PHP从另外两个数组创建数组

这是我在这里的第一篇文章，所以首先，为我的错误感到抱歉。 我解决不了一些问题。 我必须从另外两个数组创建一个数组：

数组#1：

数组#2：

我的输出数组必须是这样的：

$output = array(0 => array(
                      'key1' => '5',
                      'key2' => 'content1'),
          (1 => array(
                      'key1' => '2',
                      'key2' => 'content2'),
          (2 => array( 
                      'key1' => '3', 
                      'key2' => 'content3');

---

我完全不知道如何解决我的问题。不知道该怎么办。我几乎什么都试过了。有什么帮助吗？如何（再次）启动？

您可以通过

foreach

循环来实现：

$a = array(5, 2, 3);
$b = array(
    array('key1' => '2', 'key2' => 'content2'),
    array('key1' => '3','key2' => 'content3'),
    array('key1' => '5', 'key2' => 'content1')
);

$new = array();
foreach($a as $key) {
    foreach($b as $item) {
        if($item['key1'] == $key) {
            array_push($new, $item);
        }
    }
}

---

注意

$x = array(5, 2, 3);
$y = array(0 => array(
                      'key1' => '2',
                      'key2' => 'content2'),
          1 => array(
                      'key1' => '3',
                      'key2' => 'content3'),
          2 => array( 
                      'key1' => '5', 
                      'key2' => 'content1'));

$new_arr = array();

foreach ($x as $xvalue) {
foreach ($y as $yvalue) {
   if($yvalue['key1']==$xvalue) {
$new_arr[] = $yvalue;
}
}
}
var_dump($new_arr);

在发布代码之前，请尝试回答此问题

---

您应该关注的是创建一个与您的需求相匹配的解决方案。最好查看/

尝试一个循环来创建新表

$x = array(5, 2, 3);
$y = array(0 => array(
                      'key1' => '2',
                      'key2' => 'content2'),
          1 => array(
                      'key1' => '3',
                      'key2' => 'content3'),
          2 => array( 
                      'key1' => '5', 
                      'key2' => 'content1'));

$new_arr = array();

foreach ($x as $xvalue) {
foreach ($y as $yvalue) {
   if($yvalue['key1']==$xvalue) {
$new_arr[] = $yvalue;
}
}
}
var_dump($new_arr);

沙箱

$x = array(5, 2, 3);
$y = array(0 => array(
                      'key1' => '2',
                      'key2' => 'content2'),
          1 => array(
                      'key1' => '3',
                      'key2' => 'content3'),
          2 => array( 
                      'key1' => '5', 
                      'key2' => 'content1'));

$new_arr = array();

foreach ($x as $xvalue) {
foreach ($y as $yvalue) {
   if($yvalue['key1']==$xvalue) {
$new_arr[] = $yvalue;
}
}
}
var_dump($new_arr);