Change an array to an associative array in php to get key value pairs accordingly [duplicate]

Question

I have a php script that returns the images(or files) in a directory. The final output is a json of file names.

Below is the code of of what I have now and the result.

<?php

$files = array();

$dir = opendir('/folderpath');
while ($file = readdir($dir)) {
    if ($file == '.' || $file == '..') {
        continue;
    }

    $files[] = $file;
}

header('Content-type: application/json');
echo json_encode($files);

The result is this json

["1.png","2.jpg","4.jpg","3.png"]

The result I want is to append the url to each image add url as the key to each image.

[
 {"url":"https://s3-us-west-2.amazonaws.com/appsdeveloperblog.com/images/cats/cat-1.png"},
 {"url":"https://s3-us-west-2.amazonaws.com/appsdeveloperblog.com/images/cats/cat-2.jpg"},
 {"url":"https://s3-us-west-2.amazonaws.com/appsdeveloperblog.com/images/cats/cat-3.jpg"},
 {"url":"https://s3-us-west-2.amazonaws.com/appsdeveloperblog.com/images/cats/cat-4.jpg"},
 {"url":"https://s3-us-west-2.amazonaws.com/appsdeveloperblog.com/images/cats/cat-5.jpg"},
 {"url":"https://s3-us-west-2.amazonaws.com/appsdeveloperblog.com/images/cats/cat-6.jpg"}
]

If the list at the end of your question is meant to represent an associative PHP array, then you've got a problem. In such an array all the keys have to be unique. — KIKO Software
– KIKO Software, Commented Nov 10, 2023 at 12:30
It was quite literally just a basic string append. It's hard for me to believe you couldn't crack that! — mighty_dev
– mighty_dev, Commented Nov 10, 2023 at 12:43

Nigel Ren · Accepted Answer · 2023-11-10 12:43:59Z

1

This will create an associative array with the right structure:

$files[] = [ "url" => "https://s3-us-west-2.amazonaws.com/appsdeveloperblog.com/images/cats/cat-".$file ];

edited Nov 10, 2023 at 12:43

Nigel Ren

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answered Nov 10, 2023 at 12:32

ADyson

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