PHP class to send POST request

<?php
class Request{
public static function post($url, $post_data = '', $timeout = 5){//curl
$ch = curl_init();
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_POST, 1);
if($post_data != ''){
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
}
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_HEADER, false);
$file_contents = curl_exec($ch);
curl_close($ch);

Post() function is used to send non-PowerBuilder predefined event messages to the window. This window can be the window of the PowerBuilder application or the window of other applications. The Post() function places the sent message at the end of the specified window message queue and then returns it to the application. It does not wait for the execution of the corresponding event handler. This is different from the Send() function. The Send() function directly triggers the corresponding event of the specified window and returns to the calling application after executing the event handler. Therefore, we say that the Post() function uses an asynchronous method, and the Send() function uses a synchronous method. The parameter handle of the Post() function specifies the window handle for receiving the message. For the PowerBuilder window, the handle can be obtained using the Handle() function. For windows of other applications, you can call the system API function to find the window and get the handle of the corresponding window. If the application wants to post PowerBuilder defined events (including predefined events and user-defined events), then using the PostEvent() function is simple and convenient. When the application specifies a string in the long parameter position, the Post() function makes a copy of the string and then transmits the address of the copy to the specified window.

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