Send Message With Webhook Slack using PHP

SendMessageSlackWebhook.php

<?php 
public static function sendMessage($sMessage){

    $webhookurl = 'https://hooks.slack.com/services/WEBHOOK';
    $timestamp = date("c", strtotime("now"));

    $json_data = json_encode([
        // Message
        "text" => $sMessage

    ], JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE );


    $ch = curl_init( $webhookurl );
    curl_setopt( $ch, CURLOPT_HTTPHEADER, array('Content-type: application/json'));
    curl_setopt( $ch, CURLOPT_POST, 1);
    curl_setopt( $ch, CURLOPT_POSTFIELDS, $json_data);
    curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt( $ch, CURLOPT_HEADER, 0);
    curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);

    $response = curl_exec( $ch );
    // If you need to debug, or find out why you can't send message uncomment line below, and execute script.
    // echo $response;
    curl_close( $ch );
}