我有一个索引数组,包含一些关联数组,我应用一个简单的
$my_arr = array_filter($my_arr, function($obj) {
return $obj["value"] < 100;
});
用于过滤数组中的一些项目的函数.
这开始以奇怪的方式使我的Angular前端错误,所以几分钟后我发现$my_arr正在从索引数组转换为关联数组.
>这是array_filter中的预期行为吗？
>我如何告诉array_filter我想要一个索引数组？
编辑：根据评论中的要求,我的$my_arr：
$my_arr = [
["foo" => "bar", "value" => 10],
["foo" => "var", "value" => 30],
["foo" => "car", "value" => 440],
["foo" => "dar", "value" => 700]
]
编辑：我的代码中的真实世界提取：
$media = [
"photos" => [
["foo" => "bar", "value" => 10],
["foo" => "var", "value" => 20],
["foo" => "car", "value" => 50],
]
];
echo json_encode($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}}}
预期产量：
{"photos":[{"foo":"bar","value":10},{"foo":"var","value":20},{"foo":"car","value":50}]}
{"photos":[{"foo":"var","value":20},{"foo":"car","value":50}]}
