你不能在一个已注册的shutdown函数中抛出一个异常:

<?php
    function shutdown() {
        if (($error = error_get_last())) {
           ob_clean();
           throw new Exception("fatal error");
        }
    }

    try {
        $x = null;
        $x->method()
    } catch(Exception $e) {
        # This won't work
    }
?>

但是您可以捕获请求并将其重定向到另一个页面。

<?php
    function shutdown() {
        if (($error = error_get_last())) {
           ob_clean();
           # Report the event, send email, etc.
           header("Location: http://localhost/error-capture");
           # From /error-capture. You can use another
           # redirect, to e.g. the home page
        }
    }
    register_shutdown_function('shutdown');

    $x = null;
    $x->method()
?>

下面是一个获取当前error_handler method =)的小技巧

<?php
    register_shutdown_function('__fatalHandler');

    function __fatalHandler()
    {
        $error = error_get_last();

        // Check if it's a core/fatal error. Otherwise, it's a normal shutdown
        if($error !== NULL && $error['type'] === E_ERROR) {

            // It is a bit hackish, but the set_exception_handler
            // will return the old handler
            function fakeHandler() { }

            $handler = set_exception_handler('fakeHandler');
            restore_exception_handler();
            if($handler !== null) {
                call_user_func(
                    $handler,
                    new ErrorException(
                        $error['message'],
                        $error['type'],
                        0,
                        $error['file'],
                        $error['line']));
            }
            exit;
        }
    }
?>

我还想提醒你，如果你打电话来

<?php
    ini_set('display_errors', false);
?>

PHP停止显示错误。否则，错误文本将先于错误处理程序发送给客户端。

我刚刚想出了这个解决方案(PHP 5.2.0+):

function shutDownFunction() {
    $error = error_get_last();
     // Fatal error, E_ERROR === 1
    if ($error['type'] === E_ERROR) {
         // Do your stuff
    }
}
register_shutdown_function('shutDownFunction');

不同的错误类型在预定义常量中定义。

使用register_shutdown_function记录致命错误，这需要PHP 5.2+:

register_shutdown_function( "fatal_handler" );

function fatal_handler() {
    $errfile = "unknown file";
    $errstr  = "shutdown";
    $errno   = E_CORE_ERROR;
    $errline = 0;

    $error = error_get_last();

    if($error !== NULL) {
        $errno   = $error["type"];
        $errfile = $error["file"];
        $errline = $error["line"];
        $errstr  = $error["message"];

        error_mail(format_error( $errno, $errstr, $errfile, $errline));
    }
}

必须定义error_mail和format_error函数。例如:

function format_error( $errno, $errstr, $errfile, $errline ) {
    $trace = print_r( debug_backtrace( false ), true );

    $content = "
    <table>
        <thead><th>Item</th><th>Description</th></thead>
        <tbody>
            <tr>
                <th>Error</th>
                <td><pre>$errstr</pre></td>
            </tr>
            <tr>
                <th>Errno</th>
                <td><pre>$errno</pre></td>
            </tr>
            <tr>
                <th>File</th>
                <td>$errfile</td>
            </tr>
            <tr>
                <th>Line</th>
                <td>$errline</td>
            </tr>
            <tr>
                <th>Trace</th>
                <td><pre>$trace</pre></td>
            </tr>
        </tbody>
    </table>";
    return $content;
}

使用Swift Mailer编写error_mail函数。

参见:

php_errormsg美元 预定义常量

您不能捕获/处理致命错误，但可以记录/报告它们。 为了快速调试，我修改了这段简单代码的一个答案

function __fatalHandler()
{
    $error = error_get_last();

    // Check if it's a core/fatal error, otherwise it's a normal shutdown
    if ($error !== NULL && in_array($error['type'],
        array(E_ERROR, E_PARSE, E_CORE_ERROR, E_CORE_WARNING,
              E_COMPILE_ERROR, E_COMPILE_WARNING,E_RECOVERABLE_ERROR))) {

        echo "<pre>fatal error:\n";
        print_r($error);
        echo "</pre>";
        die;
    }
}

register_shutdown_function('__fatalHandler');

好吧，似乎可以用其他方式捕获致命错误:)

ob_start('fatal_error_handler');

function fatal_error_handler($buffer){
    $error = error_get_last();
    if($error['type'] == 1){
        // Type, message, file, line
        $newBuffer='<html><header><title>Fatal Error </title></header>
                      <style>
                    .error_content{
                        background: ghostwhite;
                        vertical-align: middle;
                        margin:0 auto;
                        padding: 10px;
                        width: 50%;
                     }
                     .error_content label{color: red;font-family: Georgia;font-size: 16pt;font-style: italic;}
                     .error_content ul li{ background: none repeat scroll 0 0 FloralWhite;
                                border: 1px solid AliceBlue;
                                display: block;
                                font-family: monospace;
                                padding: 2%;
                                text-align: left;
                      }
                      </style>
                      <body style="text-align: center;">
                        <div class="error_content">
                             <label >Fatal Error </label>
                             <ul>
                               <li><b>Line</b> ' . $error['line'] . '</li>
                               <li><b>Message</b> ' . $error['message'] . '</li>
                               <li><b>File</b> ' . $error['file'] . '</li>
                             </ul>

                             <a href="javascript:history.back()"> Back </a>
                        </div>
                      </body></html>';

        return $newBuffer;
    }
    return $buffer;
}