Install Redis & Redis extension in PHP on windows

This article is intended to those who wish to install Redis and PHP extension for interfacing with Redis on their XAMPP installation on windows. As I had required once to setup a Redis Server on my local development machine and utilize it as it was not possible to test on a production environment.

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MySQL insert row if not exists else update record

Sometimes we create MySQL tables which don’t contain auto increment primary key column instead they may have unique key or combination of unique indexes. In such tables we wish to insert a new row if primary/unique key or keys combination doesn’t exists and update record if exists.

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Delete element by value from array (not by key)

While working with array in PHP sometimes we need to check if a value exists in an array and delete that key and value together from array. This simple code snippet below with explanation will help you to understand how can you delete element by value from array (not by key).

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5 star rating in PHP with AJAX and jQuery

Displaying a star ranking system is a common requirement to implement in websites. We have explained here how can we show a group of stars for each database record and dynamically apply 5 star rating in PHP with AJAX and jQuery. You can make AJAX calls to store rating of the record in database.

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Only variables should be passed by reference

Sometime we face a unique type of problem during development and we watch the code thoroughly but not find the error where we are getting. ‘Only variables should be passed by reference‘ in $file_extension = end(explode(‘.’, $file_name)) is the same type of problem which does not seem as error in our code and it happens in usual code.

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PHP make directory or create year months folders

Like in a WordPress website, photos added in posts inside dashboard post editor are kept in dynamically generated year months directories inside wp-content/uploads directory by default. This blog will assist you to make directory in PHP and we will then create year months folders at our server.

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Ajax Image Upload using PHP and jQuery

Ajax Image Upload using PHP and jQuery is very important topic nowadays because everybody wants to save their data without refreshing the page. Today we are going to generate an Ajax based image uploader, which means the image file will be uploaded to server using Ajax request, without reloading the page.

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