Even after using PHP for years, we stumble upon functions and features that we did not know about. Some of these can be very useful, yet underused. Not all of us have read the manual and the function reference from cover to cover!
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Regular Expressions are the Swiss Army knife for searching through information for certain patterns. They have a wide arsenal of tools, some of which often go undiscovered or underutilized. Today I will show you some advanced tips for working with regular expressions.
In today’s screencast we are going to learn how to create our own helpers and libraries. We are also going to learn how to extend the existing helpers and libraries that come with CodeIgniter. At the end of the tutorial we will extend the Form Validation library to give it the ability to check for password strength.