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3 useful MySQL tricks for every web developer

Difficulty: 35 / 50
mysql dolphin

This article was originally written in 2010. This is an updated version on how to do simple Ajax requests using jQuery

Ajax is a very nice tool for web developers. It helps you interact with the visitor without reloading the page. Searching the internet you will find various Ajax code samples that are simply too complicated and some are too specific. I added some comments that will better explain what the code does and how it can be tweaked.

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How to save your PSD paths or shapes as SVG files

Difficulty: 10 / 50
coloured pencils

SVG or scalable vector graphic files are the new standard for displaying icons or logos in web design.

For those of you who don't know an SVG is basically an XML file that contains coordinates for the different paths and shapes your images have.

A big advantage for using SVG's is that they display perfectly when scaling and they look exquisite on retina displays.

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Handling PHP errors with "Class"

Difficulty: 35 / 50
upset urangutan

Debugging a PHP application by relying exclusively on the internal error reporting mechanism that PHP provides is literally like searching for a needle in a haystack. While PHP extensions like Xdebug can help a lot when it comes to killing all those pesky bugs. For those of you who don't want or can't use Xdebug, I wrote a class that enhances the standard error reporting in PHP.

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Forms Redesigned - Natural Language Form Using Only CSS 3 and HTML 5

Difficulty: 25 / 50
natural language form layout

Debugging a PHP application by relying exclusively on the internal error reporting mechanism that PHP provides is literally like searching for a needle in a haystack. While PHP extensions like Xdebug can help a lot when it comes to killing all those pesky bugs. For those of you who don't want or can't use Xdebug, I wrote a class that enhances the standard error reporting in PHP.

What we want to achieve

By default, when an error occurs, PHP outputs something like "ERROR_TYPE: error message at line X in file.php" and nothing else. What we want is to make that more relevant by adding a back-trace of the entire call stack that eventually led to the error. Also we want to be able to see function or class names that have been called and other details like function arguments or properties of objects.

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Basic usage of stored procedures in MySQL for loading filtered result sets

Difficulty: 40 / 50
child searching

In today's tutorial, we're going to learn a little bit about MySQL stored procedures and how they can be used to load filtered data from a database.

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