PHP code debugging method encapsulation

/** * 调试参数中的变量并中断程序的执行，参数可以为任意多个,类型任意，如果参数中含有'debug'参数，刚显示所有的调用过程。 * *  * debug($var1,$obj1,$array1[,]................); * debug($var1,'debug'); *  */ function debug(){ $args = func_get_args(); header('Content-type: text/html; charset=utf-8'); echo "\n
---------------------------------debug 调试信息.---------------------------------\n"; foreach($args as $value){ if(is_null($value)){ echo '[is_null]'; }elseif(is_bool($value) || empty ($value)){ var_dump($value); }else{ print_r($value); } echo "\n"; } $trace = debug_backtrace(); $next = array_merge( array ( 'line' => '??', 'file' => '[internal]', 'class' => null, 'function' => '[main]' ),$trace[0] ); $dir = realpath(__DIR__); if(strpos($next['file'], $dir) === 0){ $next['file'] = str_replace($dir, "", $next['file']); } echo "\n---------------------------------debug 调试结束.---------------------------------\n\n文件位置:"; echo $next['file'] . "\t第" . $next['line'] . "行.
\n"; if(in_array('debug', $args)){ echo "\n
        
"; print_r($trace); } //运行时间 exit; }
        

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