How to upload image file to remote server with PHP cURL
In this example we learn how to upload static files to remote server using PHP cURL library.
We must know following functionality before we continue this example
- PHP file upload functionality.
- cURL function reference.
- how to submit data to remote server with PHP cURL
Files and Folders
Download Example
For this example we use three files
- uploader.php -that receives the files on to the remote server.
- handler.php -is used to web based client to upload the file.
- curl_handler.php -PHP cURL uploading client to upload file.
Since we use same host to both local and remote server ,we create separate directories
- local_files/ - these files will be uploaded to the remote server ,means to uploaded_files directory.
- uploaded_files/ – these files are from the uploading client from both web based and PHP cURL based.
uploader.php
$upload_directory=dirname(__FILE__).'/uploaded_files/'; //check if form submitted if (isset($_POST['upload'])) { if (!empty($_FILES['my_file'])) { //check for image submitted if ($_FILES['my_file']['error'] > 0) { // check for error re file echo "Error: " . $_FILES["my_file"]["error"] ; } else { //move temp file to our server move_uploaded_file($_FILES['my_file']['tmp_name'], $upload_directory . $_FILES['my_file']['name']); echo 'Uploaded File.'; } } else { die('File not uploaded.'); // exit script } }
handler.php
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <body> <form action="uploader.php" method="post" enctype="multipart/form-data" name="form1" id="form1"> <input type="file" name="my_file" id="my_file" /> <input type="submit" name="upload" id="upload" value="Upload" /> </form> </body> </html>
curl_handler.php
$local_directory=dirname(__FILE__).'/local_files/'; $ch = curl_init(); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_VERBOSE, 0); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible;)"); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_URL, 'http://localhost/curl_image/uploader.php' ); //most importent curl assues @filed as file field $post_array = array( "my_file"=>"@".$local_directory.'shreya.jpg', "upload"=>"Upload" ); curl_setopt($ch, CURLOPT_POSTFIELDS, $post_array); $response = curl_exec($ch); echo $response;
