php – ob_start在发生错误时被中断

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？