php自带的var_dump()和print_r()在调试时不是很清晰,该函数可以让我们更清楚的看清变量的信息
```
function showData($data , $isDie = false)
{
$fileData = debug_backtrace();
ob_start();
print_r($data);
$info['content'] =ob_get_clean();
$str = '<pre style="padding:10px;border-radius:5px;background:#F5F5F5;border:1px solid #aaa;font-size:14px;line-height:18px;">';
$str .= "\r\n";
$str .= '<strong>FILE</strong>: ' . $fileData[0]['file'] . " <br />";
$str .= '<strong>LINE</strong>: ' . $fileData[0]['line'] . " <br />";
$str .= '<strong>TYPE</strong>: ' . gettype($data) . " <br />";
$str .= '<strong>CONTENT</strong>: ' . trim($info['content'], "\r\n");
$str .= "\r\n";
$str .= "</pre>";
echo $str;
$isDie === false ? false : die();
}
```
函数使用方法如下:
`showData($var,1);`
第二个参数为true时,程序自动终止