Strict mode for PHP. Show all errors, throw exceptions for errors, etc.

strict_mode.php

ini_set('display_errors', 'on');
error_reporting(E_ALL);

set_error_handler(function ($type, $message, $file = null, $line = null, $context = null) {

  // dont throw error if it might have been supressed with an @
  if ($file !== null && $line !== null)
  {
    $errorLine = explode("\n", file_get_contents($file))[$line-1];
    if (strpos($errorLine, '@') !== false && !preg_match('/@[a-z0-9-_.]+\.[a-z]{2,6}/i', $errorLine))
    {
      return;
    }
  }

  $errorConstants = [
    'E_ERROR','E_WARNING','E_PARSE','E_NOTICE','E_CORE_ERROR','E_CORE_WARNING',
    'E_COMPILE_ERROR','E_COMPILE_WARNING','E_USER_ERROR','E_USER_WARNING','E_USER_NOTICE',
    'E_STRICT','E_RECOVERABLE_ERROR','E_DEPRECATED','E_USER_DEPRECATED','E_ALL'
  ];

  $errorName = 'E_UNKNOWN('.$type.')';
  foreach($errorConstants as $constant) {
    if ($type == constant($constant)) {
      $errorName = $constant;
      break;
    }
  }
  throw new ErrorException($errorName.': '.$message, $type, 0, $file, $line);
});