php – ob_start在发生错误时被中断

所以ob_start()应该捕获输出,直到调用另一个缓冲函数,如ob_get_clean(),ob_get_contents(),ob_get_flush().

但是当缓冲区读取器内部抛出异常时,它会通过停止读取并回显输出而不是继续捕获它来影响读取器.这是我想要防止的.

让我们说这是我的脚本：

<?PHP
    error_reporting(0);
    try {
        ob_start();
            echo "I don't wanna output this what so ever,so want to cache it in a variable with using ob_ functions";
            $unlink = unlink('some file that does not exist');
            if(!$unlink) throw new Exception('Something really bad happen.',E_ERROR); //throwing this exception will effect the buffer
        $output = ob_get_clean();
    } catch(Exception $e) {
        echo "<br />Some error occured: " . $e->getMessage();
        //print_r($e);
    }
?>

该脚本将输出：

I don't wanna output this what so ever,so want to cache it in a variable with using ob_ functions
Some error occurred: Something really bad happen.

什么时候打算打印

Some error occurred: Something really bad happen.

我做错了什么,有解决方案吗？

解决方法

我的猜测是,即使在catch块内,输出缓冲仍然有效.但是,脚本以活动输出缓冲结束,因此PHP会自动显示输​​出缓冲区.

因此,您可以尝试在异常处理程序中调用ob_clean().