从PHP中的嵌套数组中删除元素

Question

我在Laravel应用程序上工作，因此我有一个关联数组要传递给API端点。在发布到API之前，我想删除img键及其值。我尝试使用未设置的功能，但未删除img键我要删除图像属性的数组 $a[] = [  0 => array:4 [    "name" => "Martoo nnn"    "relationship" => "Spouse"    "dob" => "2001-02-03"    "img" => "img.png"  ]  1 => array:4 [    "name" => "sdsdsd sdsdsd"    "relationship" => "Child"    "dob" => "2019-04-04"    "img" => "img1.png"  ]  2 => array:4 [    "name" => "sdsdsd sddds"    "relationship" => "Child"    "dob" => "2019-04-05"    "img" => "img2.png"  ]  3 => array:4 [    "name" => "dssdsd dsdsd"    "relationship" => "Child"    "dob" => "2019-04-02"    "img" => "img3.png"  ]  4 => array:4 [    "name" => "dssdsd dssdsd"    "relationship" => "Child"    "dob" => "2019-04-04"    "img" => "img4.png"  ]];取消设定方法$array = $a;unset($array['img']);//dd($a);

Answer 1

你可以做这样的事情，

foreach ($array as $key => &$value) { // & defines changes will be made @ value itself

    unset($value['img']);

}

是的，我不明白您为什么要初始化$a为$a[]？

Answer 2

$newarray = array_filter($a, function($k) {

    return $k != 'img';

}, ARRAY_FILTER_USE_KEY);

并传递这个新数组