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What is thread safe or non-thread safe in PHP?
...s implement different techniques for handling incoming HTTP requests in parallel. A pretty popular technique is using threads -- that is, the web server will create/dedicate a single thread for each incoming request. The Apache HTTP web server supports multiple models for handling requests, one of w...
Parameterize an SQL IN clause
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Two caveats:
The performance is terrible. LIKE "%...%" queries are not indexed.
Make sure you don't have any |, blank, or null tags or this won't work
There are other ways to accomplish this that some people may consider cleaner, so please keep reading.
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open_basedir restriction in effect. File(/) is not within the allowed path(s):
...or a particular user from accessing files in another user's account. So usually, any files in your own account should be readable by your own scripts.
Example settings via .htaccess if PHP runs as Apache module on a Linux system:
<DirectoryMatch "/home/sites/site81/">
php_admin_value ope...
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
... occurs when a program attempts to access a memory location that it is not allowed to access, or attempts to access a memory location in a way that is not allowed (e.g., attempts to write to a read-only location, or to overwrite part of the operating system). Systems based on processors like the Mot...
What is the advantage of using heredoc in PHP? [closed]
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The heredoc syntax is much cleaner to me and it is really useful for multi-line strings and avoiding quoting issues. Back in the day I used to use them to construct SQL queries:
$sql = <<<SQL
select *
from $tablename
where id in [$order_ids_list]
and product_na...
How can you automatically remove trailing whitespace in vim
...We use as much vi as vim (I use vim; they don't because they'd have to install it). I have a program I call stb to Strip Trailing Blanks and I use that as a filter; works in vi too. This is better.
– Jonathan Leffler
Jan 15 '09 at 14:06
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Pretty Printing a pandas dataframe
...-----+
Note:
To suppress row indices for all types of data, pass showindex="never" or showindex=False.
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discuz插件开发新手入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...scuz后台没有设计新插件！
解决方案：在config\config_global.php 最下面添加 $_config['plugindeveloper'] = 2; 刷新后台应用即可
问题2.怎么知道discuz在那些点设置了钩子呢？
设置完成1后 工具->清理缓存 然后刷新下页面就出现好多 类似str...
PHP Composer update “cannot allocate memory” error (using Laravel 4)
... you should be committing your composer.lock file and doing a composer install on a production environment which is less resource intensive.
More details here:
https://github.com/composer/composer/issues/1898#issuecomment-23453850
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How to determine the memory footprint (size) of a variable?
... This is what I've done on my Ubuntu server to enable it:
sudo apt-get install libjudy-dev libjudydebian1
sudo pecl install memprof
echo "extension=memprof.so" > /etc/php5/mods-available/memprof.ini
sudo php5enmod memprof
service apache2 restart
And then in my code:
<?php
memprof_enable();
//...