What are the common issues when uploading files using PHP and Ajax post requests?

One common issue when uploading files using PHP and Ajax post requests is that the file may not be properly sent or received due to incorrect configuration or handling of the file data. To solve this, ensure that the form encoding type is set to "multipart/form-data" and handle the file data correctly in the PHP script. 

<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['file'])) {
    $file = $_FILES['file'];
    $uploadPath = 'uploads/' . $file['name'];

    if (move_uploaded_file($file['tmp_name'], $uploadPath)) {
        echo 'File uploaded successfully';
    } else {
        echo 'Failed to upload file';
    }
}
?>

Keywords

PHP Ajax file upload post request error handling

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