How to convert array to associative array? - php

Question

This is my array format:
$data=["error.png","invoice_1.pdf","invoice2.png"];
But I want to this format:
$data=[{"file":"error.png"},{"file":"invoice_1.pdf"},{"file":"invoice2.png"}]
Thank you.

Answer 1

You should create a new array.
And loop through your existing array.
Its every element will be an array with a value from your array as value.
And key as the string file.
$arr = array();
foreach ($data as $elem) {
$arr[] = array('file' => $elem);
}
Try debugging if you get the correct array:
echo '<pre>';
print_r($arr);
echo '</pre>';
Lastly,
echo json_encode($arr);
exit;
Hope it works for you.

Answer 2

Use
$data = array_map(
function ($item) {
return array('file' => $item);
},
$data
);
to embed the values into arrays, or
$data = array_map(
function ($item) {
$x = new stdClass();
$x->file = $item;
return $x;
},
$data
);
to embed them into objects.
Or, better, use your own class instead of stdClass() and pass $item as argument to its constructor
$data = array_map(
function ($item) {
return new MyClass($item);
},
$data
);

Answer 3

$data = ["error.png", "invoice_1.pdf", "invoice2.png"];
$newarray = array();
foreach ($data as $val){
array_push($newarray, array("file" => $val));
}
print_r($newarray); //Array ( [0] => Array ( [file] => error.png ) [1] => Array ( [file] => invoice_1.pdf ) [2] => Array ( [file] => invoice2.png ) )
echo json_encode($newarray); // [{"file":"error.png"},{"file":"invoice_1.pdf"},{"file":"invoice2.png"}]
exit;
Just try this logic

Answer 4

$data = '["error.png","invoice_1.pdf","invoice2.png"]';
$data = json_decode($data);
$data = array_filter($data, function(&$item){return ($item = array('file' => $item));});
$data = json_encode($data);