This is a beginners tutorial on how to do basic subtraction in PHP. The aim of this tutorial is to help developers who are completely new to the language.

Send JavaScript object via Ajax to PHP script.

This is a short guide on how to send a JavaScript object to a PHP script using an Ajax request.

Releasing session locks in PHP.

A short and simple guide to releasing session locks in PHP.

SSL with HAProxy and PHP: Forwarding HTTPS header.

A short guide on how to forward HTTPS headers with HAProxy so that PHP knows what protocol is being used.

PHP SoapClient: Failed to load external entity.

Unfortunately, PHP’s SoapClient isn’t great at importing multiple XSD files.

Reading an email inbox with PHP – IMAP.

This is a short tutorial on how to connect to an IMAP email inbox using PHP’s imap functions.

PDO: Get the ID of the last inserted row.

This is a short guide on how to get the ID of the last inserted row using PDO’s lastInsertId method.

How to generate a random number with PHP.

In this guide, we show you how to generate a random number using PHP. We also explain why you should use the random_int function.

Ajax poll request every 10 seconds.

This is a short tutorial on how to send an Ajax request every 10 seconds – something that is often referred to as polling.

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.

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.

WAMP phpMyAdmin username and password.

Having trouble logging into a new install of phpMyAdmin? This article should save you some time and confusion!

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.

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.