A tutorial on how to append HTML to a body using JavaScript. This guide also gives an explanation on why you should avoid using document.body.innerHTML!

JavaScript: Convert a string into a number.

This is a short tutorial on how to convert a string into a number using JavaScript.

How to convert a JavaScript array into a string.

This is a tutorial on how to convert a JavaScript array into a string.

Passing JSON data to JavaScript using PHP.

This is a short tutorial on how to pass JSON data from PHP to JavaScript.

How to add a property to a JavaScript object.

This is a tutorial on how to add new properties to a JavaScript object.

Remove a CSS class using JavaScript.

This is a tutorial on how to remove a CSS class from a HTML element using JavaScript.

Change the “src” attribute of an image using JavaScript.

A tutorial on how to change the “src” attribute of an image using JavaScript.

PHP: Setting the Content-Type of a cURL request.

This is a guide on how to set the Content-Type header using PHP’s cURL extension.

JavaScript: Get the name of a month.

In this guide, we will show you how to get the textual name of a month using JavaScript.

JavaScript: Get elements by class name.

This is a JavaScript tutorial on how to get HTML elements by their class name.

How to remove warnings in PHP.

In this guide, I will show you how to remove warning messages in PHP.

PHP: Ternary Operators.

This is a tutorial on how to use PHP’s ternary operator.

Spoofing MIME types: Why you can’t trust the type field in $_FILES.

This guide explains why you should NEVER ever trust the “type” field in PHP’s $_FILES array.

PHP: Upload a file using cURL.

This is a short tutorial on how to upload a file using PHP’s cURL extension.

Fix: PHP Fatal error: Function name must be a string.

In this guide, we will show you how to fix the PHP error “Fatal error: Function name must be a string.”

PHP: Check if a string contains a substring.

This is a PHP tutorial on how to check if a string contains a given substring.

PHP: Convert a string into lowercase.

In this tutorial, we will show you how to convert a string into lowercase using PHP.

PHP: Append an element to the end of an array.

This is a tutorial on how to append an element onto the end of a PHP array.

Fix: POST Content-Length of X bytes exceeds the limit of X bytes.

In this guide, we will show you how to fix PHP warnings about the POST Content-Length exceeding the post_max_size limit.

How to upload a file using PHP.

This is a tutorial on how to upload a file using PHP

PHP: Calculate the difference in weeks between two dates.

In this PHP tutorial, we will show you how to calculate the number of weeks that occurred between two given dates.

PHP: Export MySQL data to an Excel file.

This is a tutorial on how to export MySQL data to an Excel file using PHP.