Code

Code examples for languages such as PHP and JavaScript.

PHP: Determine if a number is odd or even.

In this PHP tutorial, we will show you how to check if a number is odd or even.

PHP: Removing whitespace characters.

This is a short guide on how to remove whitespace characters in PHP.

PHP: List the indexes on a MySQL table using PDO.

This is a PHP tutorial on how to list all of the indexes that have been assigned to a MySQL table.

PHP: Don’t use the die statement.

Please don’t use PHP’s die / exit statement unless it is absolutely necessary.

Get the length of a PHP array

This is a beginner’s guide on how to get the length of a PHP array.

Calculating the mean / average in JavaScript.

This is a tutorial on how to calculate the mean / average of a JavaScript array.

JavaScript: Detect user activity / inactivity.

This is a short guide on how to detect user activity or inactivity using JavaScript.

Returning multiple values from a PHP function.

This is a tutorial on how to return multiple values from a PHP function.

Prevent direct access to a PHP file.

This is a guide on how to prevent a user from directly accessing a PHP include file in their browser.

PHP: Replace an array key.

This is a tutorial on how to replace an array key in PHP.

JavaScript: Capitalize the first letter of a string.

In this tutorial, we will show you how to capitalize the first letter of a string using JavaScript.

PHP: Get a list of all MySQL databases using PDO.

This is a short tutorial on how to get a list of all MySQL databases using PHP’s PDO object.

PHP: Find all images in a HTML string.

This is a guide on how to find and extract all image elements from a string containing HTML.

JavaScript: Add a CSS class to an element.

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

PHP: Find and extract all links from a HTML string.

This is a PHP tutorial on how to extract all links and their anchor text from a HTML string.

How to get the extension of a file using PHP.

In this guide, we are going to show you how to get the extension of a file using PHP.

JavaScript: Add text to a canvas element.

This is a beginners tutorial on how to add text to a canvas element using JavaScript.

PHP date: One week ago.

This is a PHP guide on how to get a date that was 7 days ago.

JQuery: Add a new row to a table.

This is a tutorial on how to add a new row to a table using the JQuery library.

PHP: Split string by first occurrence of a character.

This is a PHP tutorial on how to split a string by the first occurrence of a given character.

JavaScript: Detect when checkbox is ticked / unticked.

This is a JavaScript tutorial on how to detect whenever a checkbox has been ticked or unticked.

Calculating the execution time of an AJAX request.

This is a short JavaScript tutorial on how to calculate the execution time of an AJAX request.

Comparing two dates in JavaScript.

This is a short and simple guide on how to compare two dates in JavaScript.

How to detect HTTPS with JavaScript.

In this tutorial, we are going to show you how to detect HTTPS / SSL using JavaScript.

PHP: Get a random character from a string.

This is a short tutorial on how to get a random character from a string using PHP.

PHP: Fix “Array to string conversion” error.

This is a short PHP guide on how to fix the “Array to string conversion” error.

PHP: Convert an array into a comma-delimited string.

This is a short and simple PHP tutorial on how to convert an array of strings into a comma-delimited string. To do this, we will use PHP’s handy implode function.

How to refresh a page using PHP.

In this tutorial, we are going to show you how to refresh a page using PHP. To do this, we will send a header to the browser.

How to refresh a page using JavaScript.

This is a short guide on how to reload / refresh a page using JavaScript.

PDO: Count number of rows in a MySQL table.

This is a tutorial on how to count the number of rows in a MySQL table using PHP’s PDO object.

PHP: Days until next Christmas.

This is a short tutorial on how to calculate the number of days until next Christmas using PHP.

PHP: Convert a date into a Unix timestamp.

This is a short PHP guide on how to convert a regular date string into a Unix timestamp.

PHP: Check if cURL is enabled.

This is a short guide on how to check whether cURL is enabled as a PHP extension or not.

PHP: Check if a class exists.

This is a short guide on how to check if a PHP class exists or not.

Populate SELECT options with Ajax.

This is a JavaScript tutorial on how to populate a SELECT element’s options with an Ajax request.