Code

Code examples for languages such as PHP and JavaScript.

PHP: Sort array keys in a reverse / descending order.

In this PHP tutorial, we will show you how to sort array keys in descending order while maintaining the correct key-to-value associations.

PHP: Get next year’s date.

In this tutorial, we are going to show you how to get next year’s date using PHP.

How to get the current year using PHP.

In this tutorial, we will show you how to get the current year using PHP.

PHP: mssql_get_last_message returning empty string.

The other day, I came across a frustrating issue with the PHP function mssql_get_last_message.

What’s the difference between die and exit in PHP?

There are no differences between “exit” and “die” in PHP. Both of these language constructs do the exact same thing.

Converting PDF files into older PDF versions using PHP.

This is a short guide on how to convert a PDF file into an older PDF version using PHP.

PHP: Parsing a string as a float / decimal.

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

PHP: Set custom headers with cURL.

In this guide, we will show you how to easily modify HTTP request headers using PHP’s cuRL extension.

PHP: Send a 503 Service Temporarily Unavailable header.

In this tutorial, we will show you how to return a “503 Service Temporarily Unavailable” status code using PHP.

PHP: Check if date is a leap year.

In this tutorial, we are going to show you how to detect leap years using PHP.

Subtracting years from a date using PHP.

In this guide, we’ll show you how to subtract years from a date using PHP. We’ll also tell you how to avoid issues with leap years.

PHP: Send a 405 Method Not Allowed header.

In this article, we will show you how to send a “405 Method Not Allowed” header using PHP.

Copy a MySQL table using PHP.

This is a short guide on how to copy a MySQL table using PHP.

PHP: Get the size of a remote file.

In this tutorial, we will show you how to get the size of a remote file using PHP.

PHP: Subtract days from a date.

In this guide, we show you how to subtract days from a date using PHP. This can be done using the strtotime function or the DateTime object.

PHP: Get the year quarter from a date.

This is a tutorial on how to get the year quarter of a date using PHP.

Disable a button until a checkbox is checked.

In this tutorial, I will show you how to disable a HTML button until a checkbox is checked.

PHP: Get file size.

This is a guide on how to get the size of a file using PHP. I will also show you how to convert the result of PHP’s filesize function into KB, MB and GB.

PHP: Convert timestamp in milliseconds to seconds.

This is a short guide on how to convert a timestamp in milliseconds into a timestamp in seconds using PHP.

Fix PHP Notice: Undefined property

This is a guide on how to fix “Undefined property” notice in PHP.

JavaScript Christmas Countdown

This is a basic JavaScript countdown timer that counts the number of days, hours, minutes and seconds until Christmas day.

Disable an input text field using JavaScript.

This is a short guide on how to disable input text fields using JavaScript.

Check if jQuery has been loaded.

his is a short guide on how to check if the jQuery library has been loaded successfully.

Fix PHP Warning: Unterminated comment.

This is a quick guide on how to fix “Unterminated comment” warnings in PHP.

Using JQuery to remove a table row.

This is a tutorial on how to remove a HTML table row using JQuery.

Check if a JavaScript function is defined.

In this tutorial, I will show you how to check if a JavaScript function is defined or not.

PHP: Remove special characters from a string.

This is a guide on how to remove special characters from a string using PHP.

PHP: Using optional default parameters in a function.

This is a guide on how to use optional / default function parameters in PHP.

Fix PHP Fatal error: Cannot redeclare “function name”

This is a short PHP guide on how to deal with the fatal error “Cannot redeclare function_name”

PHP: Decode a JSON string into an array.

This is a short tutorial on how to decode a JSON string into an associative array using PHP.

Send a 500 Internal Server Error header with PHP.

This is a short guide on how to send a 500 Internal Server Error header to the client using PHP.

How to get the current PHP version.

This a guide on how to check the current version of PHP.

PHP: Add days to a date.

This is a short tutorial on how to add days to a given date using PHP.

Fix: Uncaught ReferenceError: $ is not defined

This is a guide on how to fix a common error that occurs whenever the JQuery library hasn’t been loaded properly.

PHP: Receive raw POST data.

This is a short guide on how to receive raw POST data in PHP.