Send PHP fatal errors to Slack

error_handler_slack.php

<?php
register_shutdown_function("shutdown_error_handler");

function FriendlyErrorType($type)
{
    switch($type)
    {
        case E_ERROR: // 1 //
            return 'E_ERROR';
        case E_WARNING: // 2 //
            return 'E_WARNING';
        case E_PARSE: // 4 //
            return 'E_PARSE';
        case E_NOTICE: // 8 //
            return 'E_NOTICE';
        case E_CORE_ERROR: // 16 //
            return 'E_CORE_ERROR';
        case E_CORE_WARNING: // 32 //
            return 'E_CORE_WARNING';
        case E_COMPILE_ERROR: // 64 //
            return 'E_COMPILE_ERROR';
        case E_COMPILE_WARNING: // 128 //
            return 'E_COMPILE_WARNING';
        case E_USER_ERROR: // 256 //
            return 'E_USER_ERROR';
        case E_USER_WARNING: // 512 //
            return 'E_USER_WARNING';
        case E_USER_NOTICE: // 1024 //
            return 'E_USER_NOTICE';
        case E_STRICT: // 2048 //
            return 'E_STRICT';
        case E_RECOVERABLE_ERROR: // 4096 //
            return 'E_RECOVERABLE_ERROR';
        case E_DEPRECATED: // 8192 //
            return 'E_DEPRECATED';
        case E_USER_DEPRECATED: // 16384 //
            return 'E_USER_DEPRECATED';
    }
    return "";
}

function shutdown_error_handler() //will be called when php script ends.
{
    $lasterror = error_get_last();
    $type = $lasterror['type'];
    $typeName = FriendlyErrorType($type);
    $message = $lasterror['message'];
    $file = $lasterror['file'];
    $line = $lasterror['line'];
    if(isset($lasterror) && in_array($typeName, ['E_ERROR', 'E_PARSE', 'E_COMPILE_ERROR', 'E_USER_ERROR']))
    {
        $payload = [
          'text' => "
Error ({$typeName}) | PHP Stopped \n
File ({$file}:{$line}) \n
Message ({$message}) \n",
        ];
        $ch = curl_init("<SLACK WEB HOOK URL>");
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            'Content-Type: application/json',
        ));
        $result = curl_exec($ch);
        curl_close($ch);
        if($result === false)
        {
            die('Curl error: ' . curl_error($ch));
        }
    }
}

index.php

<?php require __DIR . '/error_handler_slack.php';