How Can I Use cURL to Submit POST Data?

Post Data through cURL

Passing $_POST values to a different page can be achieved using cURL. The process involves activating HTTP POST and setting the post fields for cURL to handle.

Implementation:

$data = ['name' => 'Ross', 'php_master' => true];

// File upload support
$data['file'] = '@/home/user/world.jpg';

$handle = curl_init($url);
curl_setopt($handle, CURLOPT_POST, true);
curl_setopt($handle, CURLOPT_POSTFIELDS, $data);
curl_exec($handle);
curl_close($handle);

Options:

• CURLOPT_POST: Enables HTTP POST.
• CURLOPT_POSTFIELDS: Specifies the post data.

Post Data Encoding:

cURL can encode data in two formats:

1. Array: Posts as multipart/form-data (may not be supported by all servers).

curl_setopt($handle, CURLOPT_POSTFIELDS, $data);

2. URL-encoded string: Posts as application/x-www-form-urlencoded (default encoding for HTML forms).

curl_setopt($handle, CURLOPT_POSTFIELDS, http_build_query($data));

Additional Resources:

• [curl_init](https://www.php.net/manual/en/function.curl-init.php)
• [curl_setopt](https://www.php.net/manual/en/function.curl-setopt.php)

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