debug.php

См. документацию.

<?php
 
namespace Bitrix\Main\Diag;
 
class Debug
{
    protected static $timers = [];
    protected static $timeLabels = [];
 
    public static function startTimeLabel($name)
    {
        if (!isset(static::$timers[$name]))
        {
            static::$timers[$name] = new StopWatch();
        }
        static::$timers[$name]->start();
    }
 
    public static function endTimeLabel($name)
    {
        static::$timeLabels[$name]['time'] = (static::$timers[$name] ?? null)?->stop();
    }
 
    public static function getTimeLabels()
    {
        return static::$timeLabels;
    }
 
    public static function dump($var, $varName = "", $return = false)
    {
        if ($return)
        {
            ob_start();
        }
 
        $flComplex = (is_array($var) || is_object($var));
 
        if ($varName != "")
        {
            echo $varName;
 
            if ($flComplex)
            {
                echo ":" . ($return ? "\n" : "<br />");
            }
            else
            {
                echo "=";
            }
        }
 
        if ($flComplex && !$return)
        {
            echo "<pre>";
        }
 
        var_dump($var);
 
        if ($flComplex && !$return)
        {
            echo "</pre>";
        }
        echo ($return ? "\n" : "<br />");
 
        if ($return)
        {
            return ob_get_clean();
        }
 
        return null;
    }
 
    public static function dumpToFile($var, $varName = "", $fileName = "")
    {
        if (empty($fileName))
        {
            $fileName = "__bx_log.log";
        }
 
        $data = self::dump($var, $varName, true);
 
        file_put_contents($_SERVER["DOCUMENT_ROOT"] . "/" . $fileName, $data . "\n", FILE_APPEND);
    }
 
    public static function writeToFile($var, $varName = "", $fileName = "")
    {
        if (empty($fileName))
        {
            $fileName = "__bx_log.log";
        }
 
        $data = "";
        if ($varName != "")
        {
            $data .= $varName . ":\n";
        }
 
        if (is_array($var))
        {
            $data .= print_r($var, true) . "\n";
        }
        else
        {
            $data .= $var . "\n";
        }
 
        file_put_contents($_SERVER["DOCUMENT_ROOT"] . "/" . $fileName, $data . "\n", FILE_APPEND);
    }
}