Virendra's TechTalk

Big forms and PHP max_input_vars

Virendra — Mon, 03 Jun 2013 02:00:29 +0000

Recently I was working in WordPress to create a big menu, with over 75 links in it. When I created it and tried to save it got save only partially, few menu items at the end got truncated. I was …

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How to change WordPress username

Virendra — Tue, 30 Apr 2013 02:00:08 +0000

By default when you install WordPress, the username is “admin”. If someone is trying to hack into your site the first username they would try is “admin”, and if you use “admin” all they have to now do is guess …

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How to hide apache information with ServerTokens and ServerSignature directives

Virendra — Wed, 20 Feb 2013 02:00:58 +0000

In default Apache configuration, the server sends HTTP Header with the information of Apache version, modules, Operating System, etc of the Server. The HTTP response header “Server” displays all these details of the server. This information can be used by …

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How to get size of BLOB in MySQL

Virendra — Sun, 23 Dec 2012 13:00:21 +0000

Recently I wanted to get the size of the data stored in the BLOB field of a MySQL table. BLOB is a field which can be used to store variable amount of data. There is a simple MySQL String function, …

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How to add CSS classes to WordPress menu item

Virendra — Sun, 25 Nov 2012 01:00:26 +0000

Recently I wanted to add some customization to some of my menu items. So I decided to add a CSS class to those particular menu items. I could modify my theme code and add some custom functions to do that. …

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How to hide PHP version in the HTTP Headers

Virendra — Mon, 05 Nov 2012 01:00:47 +0000

In default Apache/PHP configuration, the server sends HTTP Header with the information of which PHP version is running on the server. The HTTP response header “X-Powered-By” displays the version of PHP that is running on the server. This information can …

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How to apply a function to every array element in PHP

Virendra — Mon, 22 Oct 2012 01:11:01 +0000

I often come across situations in which I need to apply some function to every element of an array in PHP. For example, to sanitize the user input, function like htmlentities can be used. We can easily use this function …

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WordPress $ is not defined even if jQuery is loaded

Virendra — Mon, 08 Oct 2012 00:00:21 +0000

Many times while using WordPress, if we try to use “$” to access jQuery, we get an error the “$ is not defined”. This happens because the jQuery library which is included in WordPress loads in “no conflict” mode. In …

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MySQL ordering results by specific field values

Virendra — Mon, 17 Sep 2012 00:27:28 +0000

In MySQL we can sort the results in ascending or descending order very easily by using the ORDER BY clause. However, there are times when you want to sort the results in a specific order which cannot be done using …

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Sample MySQL table

Virendra — Mon, 17 Sep 2012 00:14:49 +0000

For my MySQL posts here is a sample MySQL table that I would be using for my examples. I would refer my posts back to this for table structure and sample data. Table structure: +---------+-------------+------+-----+---------+-------+ | Field | Type | …

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