//dump调试函数 if (!function_exists('dump')) {
      /*      * dump调试函数      */     function dump($var)     {
          $traces = debug_backtrace();         foreach ($traces as $trace) {
              if (isset($trace['function']) && in_array($trace['function'], array('dump'))) {
                  echo '' . $trace['file'] . ':' . $trace['line'] . '' . "\n";                 break;             }         }         array_map(function ($var) {
              ob_start();             var_dump($var);             $output = ob_get_clean();             if (!extension_loaded('xdebug')) {
                  $output = preg_replace('/\]\=\>\n(\s+)/m', '] => ', $output);                 echo '
' . htmlspecialchars($output, ENT_QUOTES) . '
';             } else {
                  $traces = debug_backtrace();                 foreach ($traces as $trace) {
                      if (isset($trace['function']) && in_array($trace['function'], array('dump'))) {
                          echo preg_replace('/[^>]*:\d+:<\/small>\r?\n?/i', '→ ', $output);                         break;                     }                 }             }         }, func_get_args());     } } 调用： dump(11,22,[3,4],["a"=>5,"b"=>6], new \stdClass());

输出：