blocks|key|308164|text|您可以将display_errors设置为0或使用error_reporting()函数。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|308165|然而，通知很烦人(我可以partly+sympathize)，但它们是有目的的。你不应该定义一个常量两次，第二次将不起作用，常量将保持不变！|308166|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/errorfunc.configuration.php#ini.error-reporting|1|https://stackoverflow.com/questions/1960509/isset-and-empty-make-code-ugly^0|4|E|L|1|P|H|P|H|0|0|C|H|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]|$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@$9|Y|A|Z|1|10]]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|H|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|Q]]]]

You can set <code>display_errors</code> to <code>0</code> or use the <a href="http://www.php.net/manual/en/errorfunc.configuration.php#ini.error-reporting" rel="noreferrer"><code>error_reporting()</code></a> function.

However, notices are annoying (I can <a href="https://stackoverflow.com/questions/1960509/isset-and-empty-make-code-ugly">partly sympathize</a>) but they serve a purpose. You shouldn't be defining a constant twice, the second time won't work and the constant will remain unchanged!

blocks|key|308168|text|从PHP文档(error_reporting)：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|308169|<?php
//+Turn+off+all+error+reporting
error_reporting(0);
?>|code-block|syntax|javascript|308170|该函数的其他有趣选项：|308171|<?php

//+Report+simple+running+errors
error_reporting(E_ERROR+%7C+E_WARNING+%7C+E_PARSE);

//+Reporting+E_NOTICE+can+be+good+too+(to+report+uninitialized
//+variables+or+catch+variable+name+misspellings+...)
error_reporting(E_ERROR+%7C+E_WARNING+%7C+E_PARSE+%7C+E_NOTICE);

//+Report+all+errors+except+E_NOTICE
//+This+is+the+default+value+set+in+php.ini
error_reporting(E_ALL+&+~E_NOTICE);
//+For+PHP+<+5.3+use:+E_ALL+%5E+E_NOTICE

//+Report+all+PHP+errors+(see+changelog)
error_reporting(E_ALL);

//+Report+all+PHP+errors
error_reporting(-1);

//+Same+as+error_reporting(E_ALL);
ini_set('error_reporting',+E_ALL);

?>|308172|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/function.error-reporting.php^0|7|F|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

From the PHP documentation (<a href="http://www.php.net/manual/en/function.error-reporting.php" rel="noreferrer">error_reporting</a>):

<pre><code>&lt;?php
// Turn off all error reporting
error_reporting(0);
?&gt;
</code></pre>

Other interesting options for that function:

<pre><code>&lt;?php

// Report simple running errors
error_reporting(E_ERROR | E_WARNING | E_PARSE);

// Reporting E_NOTICE can be good too (to report uninitialized
// variables or catch variable name misspellings ...)
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);

// Report all errors except E_NOTICE
// This is the default value set in php.ini
error_reporting(E_ALL &amp; ~E_NOTICE);
// For PHP &lt; 5.3 use: E_ALL ^ E_NOTICE

// Report all PHP errors (see changelog)
error_reporting(E_ALL);

// Report all PHP errors
error_reporting(-1);

// Same as error_reporting(E_ALL);
ini_set('error_reporting', E_ALL);

?&gt;
</code></pre>

blocks|key|3043324|text|您可以在脚本中设置ini_set('display_errors',0);，也可以定义希望使用error_reporting()显示的错误。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3043325|entityMap^0|9|S|1B|H|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

You can set <code>ini_set('display_errors',0);</code> in your script or define which errors you do want to display with <code>error_reporting()</code>.

blocks|key|3043346|text|通过不导致错误：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3043347|defined('DIR_FS_CATALOG')+%7C%7C+define('DIR_FS_CATALOG',+'whatever');|code-block|syntax|javascript|3043348|如果真的必须这样做，请将使用error_reporting()的错误报告更改为E_ALL%5EE_NOTICE。|3043349|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|$]]

by not causing the errors:

<pre><code>defined('DIR_FS_CATALOG') || define('DIR_FS_CATALOG', 'whatever');
</code></pre>

If you really have to, then change error reporting using error_reporting() to E_ALL^E_NOTICE.

blocks|key|305232|text|您可以使用以下命令检查常量是否已定义：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|305233|<?php
if+(!defined('MYCONST'))
++++define('MYCONST',+'Weeha!');
?>|code-block|syntax|javascript|305234|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can check if the constant's already defined using:

<pre><code>&lt;?php
if (!defined('MYCONST'))
 define('MYCONST', 'Weeha!');
?&gt;
</code></pre>

blocks|key|307224|text|我相信在php.ini中注释掉display_errors是行不通的，因为默认设置是开的。您必须将其设置为“Off”。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307225|不要忘记重新启动Apache以应用配置更改。|307226|还要注意，虽然您可以在运行时设置display_errors，但在此处更改它不会影响致命错误。|307227|正如其他人所指出的，理想情况下，在开发过程中，您应该在尽可能高的级别上运行error_reporting，并启用display_errors。当你刚开始的时候很烦人，但是这些错误，警告，通知和严格的编码建议加在一起，让你成为一个更好的程序员。|307228|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I believe commenting out display_errors in php.ini won't work because the default is On. You must set it to 'Off' instead.

Don't forget to restart Apache to apply configuration changes.

Also note that while you can set display_errors at runtime, changing it here does not affect FATAL errors.

As noted by others, ideally during development you should run with error_reporting at the highest level possible and display_errors enabled. While annoying when you first start out, these errors, warnings, notices and strict coding advice all add up and enable you to becoem a better coder.

blocks|key|308226|text|我最近发现了这个窍门。在可能产生警告/错误的行首单击@。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|308227|就像变魔术一样，它们消失了。|308228|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I found this trick out recently.
Whack an @ at the start of a line that may produce an warning/error.

As if by magic, they dissapear.

blocks|key|3257390|text|对于命令行php，设置|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3257391|error_reporting+=+E_ALL+&+~E_NOTICE|code-block|syntax|javascript|3257392|在/etc/php5/cli/php.ini中|offset|length|style|CODE|3257393|然后，执行命令php将省略这些通知。|3257394|entityMap^0|0|0|1|L|0|7|3|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]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@$I|W|J|X|K|L]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

For the command line php, set 

<pre><code>error_reporting = E_ALL &amp; ~E_NOTICE
</code></pre>

in <code>/etc/php5/cli/php.ini</code>

command <code>php</code> execution then ommits the notices.

blocks|key|310273|text|您正在寻找：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|310274|php+-d+error_reporting="E_ERROR+%7C+E_WARNING+%7C+E_PARSE"|code-block|syntax|javascript|310275|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You are looking for:

<pre><code>php -d error_reporting="E_ERROR | E_WARNING | E_PARSE"
</code></pre>

blocks|key|3257402|text|<?php

//+Turn+off+all+error+reporting
error_reporting(0);

//+Report+simple+running+errors
error_reporting(E_ERROR+%7C+E_WARNING+%7C+E_PARSE);

//+Reporting+E_NOTICE+can+be+good+too+(to+report+uninitialized
//+variables+or+catch+variable+name+misspellings+...)
error_reporting(E_ERROR+%7C+E_WARNING+%7C+E_PARSE+%7C+E_NOTICE);

//+Report+all+errors+except+E_NOTICE
error_reporting(E_ALL+&+~E_NOTICE);

//+Report+all+PHP+errors+(see+changelog)
error_reporting(E_ALL);

//+Report+all+PHP+errors
error_reporting(-1);

//+Same+as+error_reporting(E_ALL);
ini_set('error_reporting',+E_ALL);

?>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3257403|源http://php.net/manual/en/function.error-reporting.php|unstyled|offset|length|3257404|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.error-reporting.php^0|0|1|1H|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@$G|S|H|T|1|U]]|A|$]]|$1|I|3|-4|5|F|7|V|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

<pre><code>&lt;?php

// Turn off all error reporting
error_reporting(0);

// Report simple running errors
error_reporting(E_ERROR | E_WARNING | E_PARSE);

// Reporting E_NOTICE can be good too (to report uninitialized
// variables or catch variable name misspellings ...)
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);

// Report all errors except E_NOTICE
error_reporting(E_ALL &amp; ~E_NOTICE);

// Report all PHP errors (see changelog)
error_reporting(E_ALL);

// Report all PHP errors
error_reporting(-1);

// Same as error_reporting(E_ALL);
ini_set('error_reporting', E_ALL);

?&gt;
</code></pre>

source <a href="http://php.net/manual/en/function.error-reporting.php">http://php.net/manual/en/function.error-reporting.php</a>

blocks|key|3043513|text|使用phpinfo()并搜索Configuration+File+(php.ini)+Path来查看使用了哪个配置文件路径。PHP可以有多个配置文件，这取决于它运行的环境。通常，对于控制台，它是：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3043514|/etc/php5/cli/php.ini|3043515|而对于apache运行的php，它是：|3043516|/etc/php5/apache2/php.ini|3043517|然后按您需要的方式设置error_reporting：|3043518|http://www.phpknowhow.com/configuration/php-ini-error-settings/+http://www.zootemplate.com/news-updates/how-to-disable-notice-and-warning-in-phpini-file|3043519|entityMap|0|LINK|mutability|MUTABLE|url|http://www.phpknowhow.com/configuration/php-ini-error-settings/|1|http://www.zootemplate.com/news-updates/how-to-disable-notice-and-warning-in-phpini-file^0|E|X|0|0|0|0|B|F|0|0|1R|0|1S|2G|1|0^^$0|@$1|2|3|4|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|12|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|13|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|14|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|N|3|O|5|6|7|18|8|@]|D|@$9|19|A|1A|1|1B]|$9|1C|A|1D|1|1E]]|E|$]]|$1|P|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|Q|$R|$5|S|T|U|E|$V|W]]|X|$5|S|T|U|E|$V|Y]]]]

Use phpinfo() and search for <code>Configuration File (php.ini) Path</code> to see which config file path for php is used. PHP can have multiple config files depending on environment it's running. Usually, for console it's:

/etc/php5/cli/php.ini

and for php run by apache it's:

/etc/php5/apache2/php.ini

And then set <code>error_reporting</code> the way you need it:

<a href="http://www.phpknowhow.com/configuration/php-ini-error-settings/" rel="nofollow">http://www.phpknowhow.com/configuration/php-ini-error-settings/</a>
<a href="http://www.zootemplate.com/news-updates/how-to-disable-notice-and-warning-in-phpini-file" rel="nofollow">http://www.zootemplate.com/news-updates/how-to-disable-notice-and-warning-in-phpini-file</a>

blocks|key|3043557|text|正如一些人提到的，如果你是代码作者，你应该纠正所有这些错误、通知等，因为从长远来看，这会给你带来更多的问题(特别是当你升级操作系统时)。对于您的服务器，您应该只在日志中显示错误，而不是在客户端屏幕中显示错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3043558|因此，为了避免浏览器中的错误，您可以使用display_errors标志，就像您已经找到的那样：|offset|length|style|CODE|3043559|display_errors+=+Off|code-block|syntax|javascript|3043560|现在真正的问题是当你运行别人的代码时。在这种情况下，每次升级代码时，修改代码都可能会被覆盖。这使得维护代码变得单调乏味。|3043561|在我的例子中，我使用crontab运行PHP以使wp-cron.php脚本偶尔运行一次。我收到了发送到我的电子邮件中的错误，当你每10分钟收到一封电子邮件时，这就变得乏味了！不过，在这种情况下，Wordpress系统有一个包含WP_DEBUG的配置文件，它们调用error_reporting()函数，因此尝试在命令行上更改error_reporting变量将不起作用。相反，您必须编辑根文件夹中的wp-config.php文件，并确保将WP_DEBUG设置为false。否则，您将一直收到所有这些警告和通知。|3043562|entityMap^0|0|K|E|0|0|0|A|7|O|B|35|8|3N|H|4I|F|5J|D|63|8|6E|5|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@$D|U|E|V|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|W|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@$D|Z|E|10|F|G]|$D|11|E|12|F|G]|$D|13|E|14|F|G]|$D|15|E|16|F|G]|$D|17|E|18|F|G]|$D|19|E|1A|F|G]|$D|1B|E|1C|F|G]|$D|1D|E|1E|F|G]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|R|$]]

As mentioned by some and if you are the code author, you should correct all those errors, notices, etc. because it will cause more problems for you long terms than not fixing them (especially when you upgrade your OS). For your server, you should have errors displayed in your logs only, not the client's screen.

So to avoid the errors in your browser you use the <code>display_errors</code> flag as you already found:

<pre><code>display_errors = Off
</code></pre>

Now the real problem is when you are running someone else code. In that case, modifying the code is likely to get overwritten each time you upgrade that code. It makes it tedious to maintain that code.

In my case, I am running PHP with <code>crontab</code> to have the <code>wp-cron.php</code> script running once in a while. I was getting errors sent to my emails, which becomes tedious when you get one email every 10 minutes! In that case, though, the Wordpress system has a configuration file includes a <code>WP_DEBUG</code> and they call the <code>error_reporting()</code> function so trying to change the <code>error_reporting</code> variable on the command line won't work. Instead you have to edit the <code>wp-config.php</code> file in the root folder and make sure that the <code>WP_DEBUG</code> is set to <code>false</code>. Otherwise you will get all those warnings and notices all the time.

blocks|key|305339|text|对于PHP代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|305340|<?php
error_reporting(E_ALL+&+~E_NOTICE);|code-block|syntax|javascript|305341|对于php.ini配置：|offset|length|style|CODE|305342|error_reporting+=+E_ALL+&+~E_NOTICE|305343|entityMap^0|0|0|2|7|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]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]]|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|$]]

For PHP code:

<pre><code>&lt;?php
error_reporting(E_ALL &amp; ~E_NOTICE);
</code></pre>

For <code>php.ini</code> config:

<pre><code>error_reporting = E_ALL &amp; ~E_NOTICE
</code></pre>

blocks|key|307317|text|在您的代码中使用了此行|type|unstyled|depth|inlineStyleRanges|entityRanges|data|307318|error_reporting(E_ALL+%5E+E_NOTICE);++|code-block|syntax|javascript|307319|我想这对你来说已经满了。|307320|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|$]]

Used This Line In Your Code

<pre><code>error_reporting(E_ALL ^ E_NOTICE); 
</code></pre>

I think its helf full to you.

blocks|key|3043720|text|我不喜欢在我的代码中设置error_reporting。但在一种情况下，一个遗留产品，有太多的通知，它们必须被隐藏。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3043721|因此，我使用以下代码片段来设置error_reporting的服务器端配置值，但减去E_NOTICE。|3043722|error_reporting(error_reporting()+&+~E_NOTICE);|code-block|syntax|javascript|3043723|现在，可以在php.ini或.htaccess中进一步配置错误报告设置。只有通知将始终被禁用。|3043724|entityMap^0|C|F|0|F|F|16|8|0|0|6|7|E|9|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|P|$]]

I prefer to not set the <code>error_reporting</code> inside my code. But in one case, a legacy product, there are so many notices, that they must be hidden.
So I used following snippet to set the serverside configured value for <code>error_reporting</code> but subtract the <code>E_NOTICE</code>s.
<pre><code>error_reporting(error_reporting() &amp; ~E_NOTICE);
</code></pre>
Now the error reporting setting can further be configured in <code>php.ini</code> or <code>.htaccess</code>. Only notices will always be disabled.

blocks|key|305380|text|双重定义常量|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|305381|要修复此处的特定错误，可以在定义常量之前检查是否已定义该常量：|305382|if+(+!+defined(+'DIR_FS_CATALOG'+)+)+
++define(+'DIR_FS_CATALOG',+'something...'+);|code-block|syntax|javascript|305383|我个人会从代码库中搜索常量DIR_FS_CATALOG开始，然后用下面的代码替换双重定义。|CODE|305384|用内联方式隐藏通知，逐个|305385|PHP提供了@错误控制操作符，您可以使用该操作符忽略导致通知或警告的特定函数。|305386|使用此功能，您可以在代码中逐个忽略/禁用通知和警告，这在错误或通知是故意的、有计划的，或者只是非常恼人而无法在源代码中解决的情况下很有用。在引起通知的函数或变量之前放置一个@，它将被忽略。|305387|下面是一个例子：|305388|//+Intentional+file+error
$missing_file+=+@file(+'non_existent_file'+);|305389|有关这方面的更多信息，可以在PHP's+Error+Control+Operators文档中找到。|305390|entityMap|0|LINK|mutability|MUTABLE|url|https://www.php.net/manual/en/language.operators.errorcontrol.php^0|0|6|0|0|0|D|E|0|7|5|0|6|1|0|2E|1|0|0|0|E|T|0|0^^$0|@$1|2|3|4|5|6|7|19|8|@$9|1A|A|1B|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1C|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1D|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1E|8|@$9|1F|A|1G|B|O]]|D|@]|E|$]]|$1|P|3|Q|5|6|7|1H|8|@$9|1I|A|1J|B|C]]|D|@]|E|$]]|$1|R|3|S|5|6|7|1K|8|@$9|1L|A|1M|B|O]]|D|@]|E|$]]|$1|T|3|U|5|6|7|1N|8|@$9|1O|A|1P|B|O]]|D|@]|E|$]]|$1|V|3|W|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|X|3|Y|5|J|7|1R|8|@]|D|@]|E|$K|L]]|$1|Z|3|10|5|6|7|1S|8|@]|D|@$9|1T|A|1U|1|1V]]|E|$]]|$1|11|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]]|12|$13|$5|14|15|16|E|$17|18]]]]

Double defined constants

To fix the specific error here you can check if a constant is already defined before defining it:

<pre><code>if ( ! defined( 'DIR_FS_CATALOG' ) ) 
 define( 'DIR_FS_CATALOG', 'something...' );
</code></pre>

I'd personally start with a search in the codebase for the constant <code>DIR_FS_CATALOG</code>, then replace the double definition with this. 

Hiding PHP notices inline, case-by-case

PHP provides the <code>@</code> error control operator, which you can use to ignore specific functions that cause notices or warnings.

Using this you can ignore/disable notices and warnings on a case-by-case basis in your code, which can be useful for situations where an error or notice is intentional, planned, or just downright annoying and not possible to solve at the source. Place an <code>@</code> before the function or var that's causing a notice and it will be ignored.

Here's an example:

<pre><code>// Intentional file error
$missing_file = @file( 'non_existent_file' );
</code></pre>

More on this can be found in <a href="https://www.php.net/manual/en/language.operators.errorcontrol.php" rel="nofollow noreferrer">PHP's Error Control Operators</a> docs.

blocks|key|3043759|text|error_reporting(E_ERROR)；为我工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3043760|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

error_reporting(E_ERROR); worked for me.

blocks|key|3257598|text|如果从命令行运行，则可以执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3257599|php+-d+display_errors="0"+script.php+2>/dev/null|offset|length|style|CODE|3257600|您必须包含-d+display_errors="0“以及将stderr重定向到null，奇怪的|3257601|entityMap^0|0|0|1C|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

If you are running from the command line, you can do this:
<code>php -d display_errors=&quot;0&quot; script.php 2&gt;/dev/null</code>
You HAVE to include -d display_errors=&quot;0&quot; as well as the redirection of stderr to null, weird

<pre><code>Notice: Constant DIR_FS_CATALOG already defined
</code></pre>

I've already commented out <a href="http://php.net/display_errors" rel="noreferrer"><code>display_errors</code></a> in <code>php.ini</code>, but is not working.

How do I make PHP to not output such things to browsers?

UPDATE

I put <code>display_errors = Off</code> there but it's still reporting such notices,

Is this an issue with PHP 5.3?

Reporting numerous Call Stack too..

How do I turn off PHP Notices?

服务器

Notice: Constant DIR_FS_CATALOG already defined我已经在php.ini中注释掉了，但它不起作用。如何使PHP不将这些内容输出到浏览器？更新我把display_errors = Off放在那里，但它仍然在报告这样的通知，这是PHP 5.3的一个问题吗？报告大量调用堆栈也..

问如何关闭PHP通知？
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