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Hidden Features of MySQL

... Since you put up a bounty, I'll share my hard won secrets... In general, all the SQLs I tuned today required using sub-queries. Having come from Oracle database world, things I took for granted weren’t working the same with MySQL. And my reading on MySQL tuning makes me conclude that MySQL is be...
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How to update a single library with Composer?

I need to install only 1 package for my SF2 distribution (DoctrineFixtures). 8 Answers ...
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Can't use method return value in write context

... functions. However, the real problem you have is that you use empty() at all, mistakenly believing that "empty" value is any different from "false". Empty is just an alias for !isset($thing) || !$thing. When the thing you're checking always exists (in PHP results of function calls always exist), ...
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如何高效的学习掌握新技术 - 杂谈 - 清泛网 - 专注C/C++及内核技术

...当于又打开了一扇新的大门,可以从更宽广的角度来看待问题。 从心理学的角度来说,我们对于外部世界的认识可分为三个区域:舒适区,学习区,和恐慌区。我们所熟悉的技术领域就是舒适区,而新技术是处于学习区或恐慌...
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Dynamically generating a QR code with PHP [closed]

I'm trying to generate QR codes on my website. All they have to do is have a URL in them, which a variable on my site will provide. What would be the easiest way to do this? ...
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CentOS+Nginx+PHP+MySQL详细配置(图解) - 更多技术 - 清泛网 - 专注C/C++及内核技术

CentOS+Nginx+PHP+MySQL详细配置(图解)一、安装MySQL 目前web服务器已经很少有跑静态页面的,如果要跑动态网站那当然就离不开数据库,虽然在以前文章中有写MySQL是怎么安装的...一、安装MySQL 目前web服务器已经很少有跑静态页...
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CentOS+Nginx+PHP+MySQL详细配置(图解) - PHP - 清泛IT论坛,有思想、有深度

...页请求,也就是html.如果是来自动态的网页请求,比如*.php,那么Nginx就要根据正则表达式查询路径,然后把*.PHP交给PHP去处理 #rpm -qa | grep pcre              //查询系统中有没有安装PCRE,一般装...
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How do I use PHP to get the current year?

... for the year to be out-of-date. How would I make the year update automatically with PHP 4 and PHP 5 ? 25 Answers ...
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Php multiple delimiters in explode

... You can take the first string, replace all the @ with vs using str_replace, then explode on vs or vice versa. share | improve this answer | ...
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Good PHP ORM Library?

...database (it creates everything on the fly) No models etc. It even does all the locking and transactions for you and monitors performance in the background. (Heck! it even does garbage collection....) Best of all... you don't have to write a single... line of code... Jesus this, ORM layer, saved ...