Code

Code examples for languages such as PHP and JavaScript.

PHP Fix: No ‘Access-Control-Allow-Origin’ header.

This is a short guide on how to fix Access-Control-Allow-Origin issues when you are sending Ajax requests.

Setting up haproxy as a load balancer with sticky sessions.

In this tutorial, I will show you how to setup haproxy as a load balancer that uses sticky sessions.

How to send a “404 Not Found” header with PHP

In this tutorial, I will show you how to send a 404 Not Found header using PHP.

Fixing PHP Fatal error: Allowed memory size of (X) bytes exhausted.

This is a guide on how to avoid and / or fix one of PHP’s most common fatal errors: The memory exhausted error.

PHP Tutorial: Reset Password form.

This is a short tutorial on how to create a simple Reset Password form with PHP and MySQL.

Using wildcards with PHP’s PDO object & prepared statements.

This is a short PHP tutorial on how to use the wildcard character when using prepared statements with the PDO object.

Tutorial: Ajax search with MySQL, PHP and JQuery.

In this tutorial, I will show you how to create an Ajax search form using JQuery, PHP and MySQL.

Simple PHP & Ajax search tutorial.

This is a short guide on how to build a simple search form using PHP and Ajax. In this tutorial, we will use the JQuery library to carry out an Ajax request to a PHP file, which will return our search results.

PHP: Getters and Setters.

This is a short introductory tutorial on how to use “Getters” and “Setters” in PHP.

Disable Button Until Ajax Request Is Complete

This is a short tutorial on how to disable a button until an Ajax request has been completed.

JQuery: Disable button after click event.

This is a short guide on how to disable a button with JQuery after it has been clicked.

PHP: Setting cURL timeout options.

This is a short guide on how to use the cURL timeout options in PHP.

Send a PUT request with PHP.

This is a short tutorial on how to send a PUT request using PHP.

PHP: Remove duplicate values from an array.

In this guide, we are going to show you how to remove duplicate values from a PHP array.

Fix – PHP Notice: Use of undefined constant.

This is a common notice / warning that occurs whenever PHP has detected the usage of an undefined constant.

Call to undefined function apache_get_version

The function apache_get_version returns a string that contains the version number of the Apache web server that PHP is currently running on.

PHP: Caching generated images.

This is a quick tutorial on how to cache dynamically generated images in PHP.

Fix: PHP sessions not saving.

The other day, I was told that the login form for a website I had built had stopped working. I found this very strange, as the site had been working for eight years without any issues.

PHP: Cache SQL results on file system.

This is a simple tutorial on how to use PHP to cache the results of an SQL query to the file system.

Move a file with PHP.

This is a tutorial on how to move files using PHP.

PHP: Get last day of month.

This is a short tutorial on how to get the last day / date of a given month using PHP.

MySQL: SELECT all records from today using PHP.

This is a guide on how to select all MySQL records from today (or another specified day).

Submit PHP form to new tab / page.

This is a short and sweet tutorial on how to submit a PHP form (or any HTML form, for that matter) to a new tab using HTML’s target attribute.

PHP: Check if a date falls on the weekend.

This is a short PHP tutorial on how to determine if a given date falls on the weekend.

Redirect page after five seconds using PHP, JavaScript or META tags.

In this guide, we are going to show you how to redirect a web page after five seconds. You can do this using HTML, PHP or JavaScript.

Prevent web page from being loaded inside iFrame.

This is a short tutorial on how to prevent your web pages from being loaded inside iFrames on other websites.

PHP: Convert number to month name.

This is a short guide on how to convert an integer number into a month name using PHP.

Adding columns to a MySQL table using PHP.

This is a tutorial on how to add columns to a MySQL table using PHP.

PHP: Convert portrait image to landscape image.

This is a short and simple guide on how to convert a portrait image into a landscape image using PHP’s GD and Image Functions.

Detecting AJAX requests with PHP.

This is a guide on how to detect AJAX requests with PHP.

PHP: Redirect HTTP to HTTPS.

This is a guide on how to force users to use your PHP application with HTTPS instead of HTTP.

Fix: index.php not being loaded by default.

In this article, we will show you how to solve the issue of index.php files not being served as the default file.

PHP: Remove newlines from text.

This is a short guide on how to use newlines and carriage return characters from text using PHP.

Fix: PHP upload form not working.

This guide should help you figure out why your PHP upload form isn’t working.

PHP: Identifying Production & Development Server

This is a short guide on how to write PHP code that identifies whether your application is running on a production server or a test / development server.