我有一个索引数组,其中包含几个关联数组,并且我应用了一个简单的
$my_arr = array_filter($my_arr, function($obj) {
return $obj["value"] < 100;
});
用于筛选数组某些项的函数。
这开始使我的Angular前端出现奇怪的错误,所以几分钟后我发现$my_arr
已经从索引数组转换为关联数组。
array_filter
中是否期望这种行为?- 如何告诉
array_filter
我想要一个索引数组?
编辑:根据评论请求,我的 $my_arr
:
$my_arr = [
["foo" => "bar", "value" => 10],
["foo" => "var", "value" => 30],
["foo" => "car", "value" => 440],
["foo" => "dar", "value" => 700]
]
编辑:我的代码中的现实世界示例:
$media = [
"photos" => [
["foo" => "bar", "value" => 10],
["foo" => "var", "value" => 20],
["foo" => "car", "value" => 50],
]
];
echo json_encode($media);
echo "\n\n";
$media["photos"] = array_filter($media["photos"], function($photo) {
return $photo["value"] > 15;
});
echo json_encode($media);
输出:
{"photos":[{"foo":"bar","value":10},{"foo":"var","value":20},{"foo":"car","value":50}]}
{"photos":{"1":{"foo":"var","value":20},"2":{"foo":"car","value":50}}}
预期输出:
{"photos":[{"foo":"bar","value":10},{"foo":"var","value":20},{"foo":"car","value":50}]}
{"photos":[{"foo":"var","value":20},{"foo":"car","value":50}]}
array_values()
调用包装在array_filter()
周围,你就可以开始了。 - Rizier123