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MySQL, Check if a column exists in a table with SQL
...his works well for me.
SHOW COLUMNS FROM `table` LIKE 'fieldname';
With PHP it would be something like...
$result = mysql_query("SHOW COLUMNS FROM `table` LIKE 'fieldname'");
$exists = (mysql_num_rows($result))?TRUE:FALSE;
...
由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个事，我想以这个事来粗略地和大家讨论一下网站性能的问题。因为仓促，而且完全基于...12306.cn网站挂了，被全国人民骂了。我这两天也在思考这个事，我想以这个事来粗略地和大家讨论一下网站性能的问题。因为仓促，而且...
How to Free Inode Usage?
...trick. my problem was to have an incredible amount of sessions in the /lib/php/sessions directory. maybe somebody has the same problem
– SteMa
May 22 '12 at 14:51
2
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Two-way encryption: I need to store passwords that can be retrieved
...there is much more to note...
How do I encrypt and decrypt a password in PHP?
See below for a strong class that takes care of everything for you:
What is the safest algorithm to encrypt the passwords with?
safest? any of them. The safest method if you're going to encrypt is to protect against ...
The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead [dupl
When I attempt to connect to a MySQL server from PHP, I see the following error:
1 Answer
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phpcms v9类别调用方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
phpcms v9类别调用方法phpcms v9默认后台有类别管理，但是没有按照类别浏览的功能，本文正是为了弥补这个不足。phpcms v9默认后台有类别管理，但是没有按照类别浏览的功能，本文正是为了弥补这个不足。
在需要调用类别的地方...
How to convert array values to lowercase in PHP?
How can I convert all values in an array to lowercase in PHP?
10 Answers
10
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Get original URL referer with PHP?
...%2fstackoverflow.com%2fquestions%2f1864583%2fget-original-url-referer-with-php%23new-answer', 'question_page');
}
);
Post as a guest
Name
...
How to pass an array within a query string?
...value fields or arrays would be:
?cars[]=Saab&cars[]=Audi (Best way- PHP reads this into an array)
?cars=Saab&cars=Audi (Bad way- PHP will only register last value)
?cars=Saab,Audi (Haven't tried this)
Form Examples
On a form, multi-valued fields could take the form of a select box set ...
转型产品经理必看 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...多人问我如何转型做产品经理、转型产品经理会遇到哪些问题，其实我一直没能回答好这个问题，因为我从运营转型产品经理的过程太顺利，并且转型的过程也没有做太多的思考和总结。直到看到这篇文章...作者完整记录了自己...