How to hide apache information with ServerTokens and ServerSignature directives

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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 hackers to try to exploit any vulnerabilities in the Apache, OS or other modules you […]

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How to get size of BLOB in MySQL

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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, to find the size of BLOB data, OCTET_LENGTH. This function returns the length of BLOB

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How to add CSS classes to WordPress menu item

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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. However, I first decided to explore the WordPress options and see if there was already

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How to hide PHP version in the HTTP Headers

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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 be used by hackers to try to exploit any vulnerabilities in the PHP version you

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How to apply a function to every array element in PHP

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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 on a single variable or a single dimension array by simply applying the function or

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