Security

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  • PHP CAPTCHA tutorial

    Using PHP and sessions, this tutorial explains, step by step, how to set up an image verification CAPTCHA service and attach it to any web form. It stores the value of the CAPTCHA as a md5()'d session variable. Extremely simple and abstract, but easy to... (show more)

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  • myPHPscripts Basic string encoding/decoding functions

    These are basic string encoding/decoding functions I developed for use in flat-file databases. They offer limited security to protect sensitive data from being viewed.

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  • 5 Basic PHP Security Tips

    Security should be a top concern throughout the development of any PHP web application. There are some very simple measures you can take to protect your application from potential abuse. This post will cover some of the basics of PHP security.

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  • MD5 Encryption in PHP

    Md5 is a very easy way to encrypt any string data. Following example take and encrypts a string. Remember that you could not dencrypt any data after encryption. .

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  • email Injection - How to prevent it?

    I persume that most of them would be knowing this attack and how to prevent it, but recently when i was googling i found out many feedback form scripts to be in secure. PHP is a majuscule and secure language, but it all depends upon the programmer style... (show more)

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  • PHP Form image verification

    When you build a form in your web page, you are susceptible to being spamed by automated systems. In order to make sure that the one who completes the form is human, you can use the system with image verification.

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  • Block IP address with PHP

    Its always a hard slog with spammers around the web. Once we have found the culprit, we generally move towards htaccess to lock the window and when its not available, we rely on the power of PHP.Lets get into the battle

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  • Advanced IP Ban Script

    This script is useful if you want to restrict the access to some people on your site, based on their IPs. There are 2 lists which can be used: one which has a list of the IPs you want to ban and one which you can use to ban a range of IPs. The script... (show more)

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  • Creating a basic bad word filter in PHP

    This tutorial will show you how to create a basic bad word filter in PHP.

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  • MD5 Encryption in PHP

    Md5 is a very easy way to encrypt any stirng data. Following example take and encrypts a string. Remember that you could not dencrypt any data after encryption.

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  • Basic PHP Security

    In this tutorial we'll go over some of the areas of PHP that need special attention to make sure your code protects against malicious attempts, from SQL Injection to the underestimated - XSS.

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  • Minimal Sanitation Techniques

    This tutorial will show you sanitation techiques used by the pros so that your scripts will be secure, and resistant to any attacks.

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  • How to Spam-Proofing Your Website

    Spam-Proofing Your Website Anyone who operates their own website knows that you need to provide forms in your site for visitors to contact you. The big challenge is providing easy form access to your visitors, without letting SPAM flood your email... (show more)

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  • Developing rock-solid code in PHP

    This tutorial is intended for both amateur and professional PHP programmers who want to design and write quality functions. To complete this tutorial, you must have a basic level of working knowledge with PHP, and know how to define functions.This will... (show more)

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  • Simple IP Address Format Checker

    There are more extensive ways to do an IP address format check, but this is a good cursory check. Simply call it passing an IP address as a string and it will return true if it's valid, false if it isn't.

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  • Hotlink Protection with PHP

    Hotlinking is when another website links directly to one or more of your images or multimedia files and includes it on their web page. Not only is this theft of your intellectual property, but further more, you are paying for the bandwidth used by that... (show more)

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  • Creating a CAPTCHA with PHP

    In this tutorial, you will learn how to creat a CAPTCHA utilizing the graphics capabilities of PHP.

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  • Build up a function to secure a text box

    A detailed php tutorial that shows how to create a useful function to secure a web site from attack attempts passing through text boxes.

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  • Getting rid of register_globals

    A short tip and some code on how to handle getting rid of register_globals in your application.

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  • Getting Started With Mcrypt

    Mcrypt is a wonderful set of library functions for encrypting, decrypting, and hashing data.

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