I know the best way is probably to save the new object at the end of the existing array without a name, but I want to make it a little more complicated to learn how to do this and have it at index value [0] of the array instead A new object is added at the end [arr.length - 1] and I need to save it in a specific array name because in this example I will have multiple arrays. Information is collected by HTML forms.

What I have is:

 $_POST['year'], 'link' => $_POST['link'], 'img' => $_POST['img'], ); $array_data[]=$extra; echo "file exist
"; return json_encode($array_data, JSON_PRETTY_PRINT); } else { $datae=array(); $datae[]=array( 'year' => $_POST['year'], 'link' => $_POST['link'], 'img' => $_POST['img'], ); echo "file not exist
"; return json_encode($datae, JSON_PRETTY_PRINT); } } $file_name='newsFeeder'. '.json'; if(file_put_contents("./feeder/{$file_name}", get_data())) { echo 'success'; } else { echo 'There is some error'; } } ?>

The result is a JSON file like this:

[ { "year": "2022", "link": "xxxxxx_01.html", "img": "xxxxxx_01.webp" }, { "year": "2023", "link": "xxxxxx_02.html", "img": "xxxxxx_02.webp" }, . . . . { // <- 这是在索引值[arr.length - 1]处添加的最新对象 // "year": "2024", "link": "xxxxxx_03.html" } ]

But what I want to achieve is this:

{ "newsFeeder": [ // <- 这是我需要添加新对象的数组 // { // <- 这是在索引值[0]处添加的最新对象 // "year": "2024", "link": "xxxxxx_06.html", "img": "xxxxxx_06.webp" }, . . . . { "year": "2023", "link": "xxxxxx_02.html", "img": "xxxxxx_02.webp" }, { "year": "2022", "link": "xxxxxx_01.html", "img": "xxxxxx_01.webp" } ], "whyComplicate_things":[ // 我需要保持此数组不变 // {"a":"01.webp", "title":"title 01"}, {"a":"02.webp", "title":"title 02"}, {"a":"03.webp", "title":"title 03"} ] }

I've tried different methods, but those either clear everything and only add the collected information, or end up breaking things. Hope this helps me learn how to achieve this goal!