jQuery AJAX File Upload with PHP
Issue:
An AJAX file upload is attempted using jQuery and PHP, but the file is not being uploaded, and the success alert is not triggered.
Solution:
-
Server-Side Script:
A PHP script on the server is required to handle the file upload, receive the form data, and save the file in the specified location. For example:
if (0 < $_FILES['file']['error']) { echo 'Error: ' . $_FILES['file']['error'] . '<br>'; } else { move_uploaded_file($_FILES['file']['tmp_name'], 'uploads/' . $_FILES['file']['name']); }
Ensure that the uploads directory has write permissions.
-
AJAX Call:
The AJAX call in the jQuery script should specify the URL of the server-side script to handle the file upload:
$.ajax({ url: 'upload.php', // Point to the server-side PHP script dataType: 'text', // Specify the expected response type (optional) cache: false, contentType: false, processData: false, data: form_data, type: 'post', success: function(php_script_response) { alert(php_script_response); // Display the response from the PHP script (optional) } });
Renaming File on the Server:
Instead of $_FILES['file']['name'], use your own server-generated filename in move_uploaded_file() to rename the file:
move_uploaded_file($_FILES['file']['tmp_name'], 'uploads/my_new_filename.whatever');
Additional Tips:
- Ensure that the server configuration settings for upload_max_filesize and post_max_size are appropriate for the size of the files being uploaded.
- Test that the scripts have the proper permissions and are executable (CHMOD 755).
The above is the detailed content of Why Isn't My jQuery AJAX File Upload to PHP Working?. For more information, please follow other related articles on the PHP Chinese website!

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