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HomeBackend DevelopmentPHP Tutorialphp索引数组按需处理成关联数组?

问题可能有些描述的不是很好,我简单举个栗子

<code>//需求
$arr = array('100', '101', '102', '103', '104', '105');
$newArr = array(array('id'=>'100'), array('id'=>'101'), array('id'=>'102'), array('id'=>'103'), array('id'=>'104'), array('id'=>'105'));
//我的处理方式是
$newArr = [];
foreach($arr as $val) {
    $newArr[] = array('id'=>$val);
}
</code>

上述方法可以实现我的需求,还有什么其他方式可以实现?我找到一个内置函数array_chunk($arr, 1, true)但是,这个键名是设置不了的。

回复内容:

问题可能有些描述的不是很好,我简单举个栗子

<code>//需求
$arr = array('100', '101', '102', '103', '104', '105');
$newArr = array(array('id'=>'100'), array('id'=>'101'), array('id'=>'102'), array('id'=>'103'), array('id'=>'104'), array('id'=>'105'));
//我的处理方式是
$newArr = [];
foreach($arr as $val) {
    $newArr[] = array('id'=>$val);
}
</code>

上述方法可以实现我的需求,还有什么其他方式可以实现?我找到一个内置函数array_chunk($arr, 1, true)但是,这个键名是设置不了的。

array_map()函数可以实现你的需求:

<code>$arr = array('100', '101', '102', '103', '104', '105');
function make($v)
{
    return array('id'=>$v);
}

$newArr=array_map('make', $arr);
var_dump($newArr);
//多谢楼下坛友建议
$newArr=array_map(function ($v){return array('id'=>$v);},$arr);</code>

补充下,上面的写法还可以用匿名函数使其更优雅。

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