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.

Nginx: SSL_do_handshake() failed… and that’s OK!

The SSL_do_handshake() failed error is nothing to worry about in most cases.

Facebook notifications keep repeating.

For the past few months, the notifications on my Facebook app have been “repeating” themselves.

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.

MySQL: Extract Year and Month from Date column.

This is a short guide on how to get the year and month from a date column in MySQL.

How to check if someone follows you on Instagram.

This is a guide on how to check if a person is following you back on Instagram.

Mute a person’s story on Snapchat.

This is a short guide on how to mute a person’s story on Snapchat.

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 disable the Nginx access log.

This is a guide on how to disable the Nginx access log.

Test Nginx configuration file.

This is a short guide on how to test your Nginx configuration file without restarting your web server.

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.

Where is the Audi windshield washer located?

How to find the windshield washer reservoir on a 2017 Audi A5 Sportback.

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.