ErrorHandler.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\HttpKernel\Debug;


/**
 * ErrorHandler.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class ErrorHandler {
  private $levels = array(
    E_WARNING => 'Warning',
    E_NOTICE => 'Notice',
    E_USER_ERROR => 'User Error',
    E_USER_WARNING => 'User Warning',
    E_USER_NOTICE => 'User Notice',
    E_STRICT => 'Runtime Notice',
    E_RECOVERABLE_ERROR => 'Catchable Fatal Error',
    E_DEPRECATED => 'Deprecated',
    E_USER_DEPRECATED => 'User Deprecated',
  );
  private $level;

  /**
   * Register the error handler.
   *
   * @param integer $level The level at which the conversion to Exception is done (null to use the error_reporting() value and 0 to disable)
   *
   * @return The registered error handler
   */
  public static function register($level = null) {
    $handler = new static();
    $handler
      ->setLevel($level);
    set_error_handler(array(
      $handler,
      'handle',
    ));
    return $handler;
  }
  public function setLevel($level) {
    $this->level = null === $level ? error_reporting() : $level;
  }

  /**
   * @throws \ErrorException When error_reporting returns error
   */
  public function handle($level, $message, $file, $line, $context) {
    if (0 === $this->level) {
      return false;
    }
    if (error_reporting() & $level && $this->level & $level) {
      throw new \ErrorException(sprintf('%s: %s in %s line %d', isset($this->levels[$level]) ? $this->levels[$level] : $level, $message, $file, $line), 0, $level, $file, $line);
    }
    return false;
  }

}