blocks|key|1093429|text|你可以像这样简化它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1093430|if+(+that_happened+%7C%7C+something_else_happened+)
{
++++header('X-Error-Message:+Incorrect+username+or+password',+true,+500);
++++die;
}|code-block|syntax|javascript|1093431|它将返回以下头部：|1093432|HTTP/1.1+500+Internal+Server+Error
...
X-Error-Message:+Incorrect+username+or+password
...|1093433|补充道:如果你需要知道到底哪里出了问题，可以这样做：|1093434|if+(+that_happened+)
{
++++header('X-Error-Message:+Incorrect+username',+true,+500);
++++die('Incorrect+username');
}

if+(+something_else_happened+)
{
++++header('X-Error-Message:+Incorrect+password',+true,+500);
++++die('Incorrect+password');
}|1093435|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

You can simplify it like this:

<pre><code>if ( that_happened || something_else_happened )
{
 header('X-Error-Message: Incorrect username or password', true, 500);
 die;
}
</code></pre>

It will return following header:

<pre class="lang-none prettyprint-override"><code>HTTP/1.1 500 Internal Server Error
...
X-Error-Message: Incorrect username or password
...
</code></pre>

Added: If you need to know exactly what went wrong, do something like this:

<pre><code>if ( that_happened )
{
 header('X-Error-Message: Incorrect username', true, 500);
 die('Incorrect username');
}

if ( something_else_happened )
{
 header('X-Error-Message: Incorrect password', true, 500);
 die('Incorrect password');
}
</code></pre>

blocks|key|1093513|text|您可以使用以下函数发送状态更改：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1093514|function+header_status($statusCode)+{
++++static+$status_codes+=+null;

++++if+($status_codes+===+null)+{
++++++++$status_codes+=+array+(
++++++++++++100+=>+'Continue',
++++++++++++101+=>+'Switching+Protocols',
++++++++++++102+=>+'Processing',
++++++++++++200+=>+'OK',
++++++++++++201+=>+'Created',
++++++++++++202+=>+'Accepted',
++++++++++++203+=>+'Non-Authoritative+Information',
++++++++++++204+=>+'No+Content',
++++++++++++205+=>+'Reset+Content',
++++++++++++206+=>+'Partial+Content',
++++++++++++207+=>+'Multi-Status',
++++++++++++300+=>+'Multiple+Choices',
++++++++++++301+=>+'Moved+Permanently',
++++++++++++302+=>+'Found',
++++++++++++303+=>+'See+Other',
++++++++++++304+=>+'Not+Modified',
++++++++++++305+=>+'Use+Proxy',
++++++++++++307+=>+'Temporary+Redirect',
++++++++++++400+=>+'Bad+Request',
++++++++++++401+=>+'Unauthorized',
++++++++++++402+=>+'Payment+Required',
++++++++++++403+=>+'Forbidden',
++++++++++++404+=>+'Not+Found',
++++++++++++405+=>+'Method+Not+Allowed',
++++++++++++406+=>+'Not+Acceptable',
++++++++++++407+=>+'Proxy+Authentication+Required',
++++++++++++408+=>+'Request+Timeout',
++++++++++++409+=>+'Conflict',
++++++++++++410+=>+'Gone',
++++++++++++411+=>+'Length+Required',
++++++++++++412+=>+'Precondition+Failed',
++++++++++++413+=>+'Request+Entity+Too+Large',
++++++++++++414+=>+'Request-URI+Too+Long',
++++++++++++415+=>+'Unsupported+Media+Type',
++++++++++++416+=>+'Requested+Range+Not+Satisfiable',
++++++++++++417+=>+'Expectation+Failed',
++++++++++++422+=>+'Unprocessable+Entity',
++++++++++++423+=>+'Locked',
++++++++++++424+=>+'Failed+Dependency',
++++++++++++426+=>+'Upgrade+Required',
++++++++++++500+=>+'Internal+Server+Error',
++++++++++++501+=>+'Not+Implemented',
++++++++++++502+=>+'Bad+Gateway',
++++++++++++503+=>+'Service+Unavailable',
++++++++++++504+=>+'Gateway+Timeout',
++++++++++++505+=>+'HTTP+Version+Not+Supported',
++++++++++++506+=>+'Variant+Also+Negotiates',
++++++++++++507+=>+'Insufficient+Storage',
++++++++++++509+=>+'Bandwidth+Limit+Exceeded',
++++++++++++510+=>+'Not+Extended'
++++++++);
++++}

++++if+($status_codes[$statusCode]+!==+null)+{
++++++++$status_string+=+$statusCode+.+'+'+.+$status_codes[$statusCode];
++++++++header($_SERVER['SERVER_PROTOCOL']+.+'+'+.+$status_string,+true,+$statusCode);
++++}
}|code-block|syntax|javascript|1093515|您可以这样使用它：|1093516|<?php
header_status(500);

if+(that_happened)+{
++++die("that+happened")
}

if+(something_else_happened)+{
++++die("something+else+happened")
}

update_database();

header_status(200);|1093517|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You may use the following function to send a status change:

<pre><code>function header_status($statusCode) {
 static $status_codes = null;

 if ($status_codes === null) {
 $status_codes = array (
 100 =&gt; 'Continue',
 101 =&gt; 'Switching Protocols',
 102 =&gt; 'Processing',
 200 =&gt; 'OK',
 201 =&gt; 'Created',
 202 =&gt; 'Accepted',
 203 =&gt; 'Non-Authoritative Information',
 204 =&gt; 'No Content',
 205 =&gt; 'Reset Content',
 206 =&gt; 'Partial Content',
 207 =&gt; 'Multi-Status',
 300 =&gt; 'Multiple Choices',
 301 =&gt; 'Moved Permanently',
 302 =&gt; 'Found',
 303 =&gt; 'See Other',
 304 =&gt; 'Not Modified',
 305 =&gt; 'Use Proxy',
 307 =&gt; 'Temporary Redirect',
 400 =&gt; 'Bad Request',
 401 =&gt; 'Unauthorized',
 402 =&gt; 'Payment Required',
 403 =&gt; 'Forbidden',
 404 =&gt; 'Not Found',
 405 =&gt; 'Method Not Allowed',
 406 =&gt; 'Not Acceptable',
 407 =&gt; 'Proxy Authentication Required',
 408 =&gt; 'Request Timeout',
 409 =&gt; 'Conflict',
 410 =&gt; 'Gone',
 411 =&gt; 'Length Required',
 412 =&gt; 'Precondition Failed',
 413 =&gt; 'Request Entity Too Large',
 414 =&gt; 'Request-URI Too Long',
 415 =&gt; 'Unsupported Media Type',
 416 =&gt; 'Requested Range Not Satisfiable',
 417 =&gt; 'Expectation Failed',
 422 =&gt; 'Unprocessable Entity',
 423 =&gt; 'Locked',
 424 =&gt; 'Failed Dependency',
 426 =&gt; 'Upgrade Required',
 500 =&gt; 'Internal Server Error',
 501 =&gt; 'Not Implemented',
 502 =&gt; 'Bad Gateway',
 503 =&gt; 'Service Unavailable',
 504 =&gt; 'Gateway Timeout',
 505 =&gt; 'HTTP Version Not Supported',
 506 =&gt; 'Variant Also Negotiates',
 507 =&gt; 'Insufficient Storage',
 509 =&gt; 'Bandwidth Limit Exceeded',
 510 =&gt; 'Not Extended'
 );
 }

 if ($status_codes[$statusCode] !== null) {
 $status_string = $statusCode . ' ' . $status_codes[$statusCode];
 header($_SERVER['SERVER_PROTOCOL'] . ' ' . $status_string, true, $statusCode);
 }
}
</code></pre>

You may use it as such:

<pre><code>&lt;?php
header_status(500);

if (that_happened) {
 die("that happened")
}

if (something_else_happened) {
 die("something else happened")
}

update_database();

header_status(200);
</code></pre>

blocks|key|878809|text|header($_SERVER['SERVER_PROTOCOL']+.+'+500+Internal+Server+Error',+true,+500);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|878810|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>header($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error', true, 500);
</code></pre>

blocks|key|878855|text|您的代码应该如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|878856|<?php
if+(+that_happened+)+{
++++header("HTTP/1.0+500+Internal+Server+Error");
++++die();
}

if+(+something_else_happened+)+{
++++header("HTTP/1.0+500+Internal+Server+Error");
++++die();
}

//+Your+function+should+return+FALSE+if+something+goes+wrong
if+(+!update_database()+)+{
++++header("HTTP/1.0+500+Internal+Server+Error");
++++die();
}

//+the+script+can+also+fail+on+the+above+line
//+e.g.+a+mysql+error+occurred


header('HTTP/1.1+200+OK');
?>|code-block|syntax|javascript|878857|如果出现问题，我假设你会停止执行。|878858|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Your code should look like:

<pre><code>&lt;?php
if ( that_happened ) {
 header("HTTP/1.0 500 Internal Server Error");
 die();
}

if ( something_else_happened ) {
 header("HTTP/1.0 500 Internal Server Error");
 die();
}

// Your function should return FALSE if something goes wrong
if ( !update_database() ) {
 header("HTTP/1.0 500 Internal Server Error");
 die();
}

// the script can also fail on the above line
// e.g. a mysql error occurred


header('HTTP/1.1 200 OK');
?&gt;
</code></pre>

I assume you stop execution if something goes wrong.

blocks|key|878918|text|你可以直接放入：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|878919|header("HTTP/1.0+500+Internal+Server+Error");|code-block|syntax|javascript|878920|在你的条件中，比如：|878921|if+(that+happened)+{
++++header("HTTP/1.0+500+Internal+Server+Error");
}|878922|至于数据库查询，您可以这样做：|878923|$result+=+mysql_query("..query+string..")+or+header("HTTP/1.0+500+Internal+Server+Error");|878924|您应该记住，您必须将此代码放在任何html标记(或输出)之前。|878925|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

You can just put:

<pre><code>header("HTTP/1.0 500 Internal Server Error");
</code></pre>

inside your conditions like:

<pre><code>if (that happened) {
 header("HTTP/1.0 500 Internal Server Error");
}
</code></pre>

As for the database query, you can just do that like this:

<pre><code>$result = mysql_query("..query string..") or header("HTTP/1.0 500 Internal Server Error");
</code></pre>

You should remember that you have to put this code before any html tag (or output).

I need to send "500 Internal Server Error" from an PHP script under certain conditions. The script is supposed to be called by a third party app. The script contains a couple of <code>die("this happend")</code> statements for which I need to send the <code>500 Internal Server Error</code> response code instead of the usual <code>200 OK</code>. The third party script will re-send the request under certain conditions which include not receiving the <code>200 OK</code> response code.

Second part of the question: I need to setup my script like this:

<pre><code>&lt;?php
 custom_header( "500 Internal Server Error" );

 if ( that_happened ) {
 die( "that happened" )
 }

 if ( something_else_happened ) {
 die( "something else happened" )
 }

 update_database( );

 // the script can also fail on the above line
 // e.g. a mysql error occurred

 remove_header( "500" );
?&gt;
</code></pre>

I need to send <code>200</code> header only after the last line has been executed.

<h1>Edit</h1>

A side question: can I send strange 500 headers such as these:

<pre><code>HTTP/1.1 500 No Record Found
HTTP/1.1 500 Script Generated Error (E_RECORD_NOT_FOUND)
HTTP/1.1 500 Conditions Failed on Line 23
</code></pre>

Will such errors get logged by the webserver?

How to send 500 Internal Server Error error from a PHP script

数据库

服务器

我需要发送"500内部服务器错误“从PHP脚本在某些条件下。该脚本应由第三方应用程序调用。该脚本包含两个die("this happend")语句，我需要为这些语句发送500 Internal Server Error响应代码，而不是通常的200 OK。第三方脚本将在某些情况下重新发送请求，包括未收到200 OK响应码...

问如何从PHP脚本发送500内部服务器错误
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