一个输出方法，显示输出文件-行数-数据类型-数据

/**
 *输出信息
 */
function sd($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();
}

代码

$int = 123;
$str = 'hello world';
$arr = array('hello','world');

sd($int);
sd($str);
sd($arr);

展示效果

FILE: /test/__controller.php 
LINE: 20 
TYPE: integer 
CONTENT: 123

FILE: /test/__controller.php 
LINE: 21 
TYPE: integer 
CONTENT: 123

FILE: /test/__controller.php 
LINE: 22 
TYPE: array
CONTENT: array（
　　[0] => hello
　　[1] => world
)