Brackets instead of comma using foreach to create JSON with PHP

So I’m trying to create an open source file manager with php using ajax requests and, when i use json_encode my json response gets a close bracket for each array key.

This is the code (PHP):

<?php

$fileDirectory = "files/";
$fileArray = array_slice(scandir("$fileDirectory"), 3);
$fileSizeArray = array();

foreach($fileArray as $File){
    $fileSizeArray[$File] = filesize($fileDirectory.$File);
}

foreach($fileSizeArray as $File => $fileSize){
    echo json_encode ([
        $filesResponseArray[] = array(
            'fileName' => $File,
            'fileSize' => $fileSize
        )
    ]);
}

and this is the result:

[{"fileName":"61177d35527fd_w68FQFb.png","fileSize":10752}][{"fileName":"611780a39307c_1152265.jpg","fileSize":1383556}]

and i need this result

[{"fileName":"61177d35527fd_w68FQFb.png","fileSize":10752},{"fileName":"611780a39307c_1152265.jpg","fileSize":1383556}]

Answer

You encode to quickly. Try this:

<?php

$fileDirectory = "files/";
$fileArray = array_slice(scandir("$fileDirectory"), 3);
$fileSizeArray = array();

foreach($fileArray as $File){
    $fileSizeArray[$File] = filesize($fileDirectory.$File);
}

foreach($fileSizeArray as $File => $fileSize){
        $filesResponseArray[] = array(
            'fileName' => $File,
            'fileSize' => $fileSize
        );
}

echo json_encode($filesResponseArray);