How to send upload file to other website by using curl in php?

Question

How does one upload a file to another website by using Curl in PHP and get the response page?

The website: http://www.postto.me

Answer 1

On top of Paul Schreiber's answer:

According to how to upload file using curl with php, starting from php 5.5 you need to use curl_file_create($path) instead of "@$path".

Tested: it does work.

With the @ way no file gets uploaded.

Answer 2

Here's an example of how to upload a file. (First hit for "curl file upload example php".)

<?php
    $ch = curl_init();
    curl_setopt($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_URL, _VIRUS_SCAN_URL);
    curl_setopt($ch, CURLOPT_POST, true);
    // same as <input type="file" name="file_box">
    $post = array(
        "file_box"=>"@/path/to/myfile.jpg",
    );
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post); 
    $response = curl_exec($ch);
?>