Tips & Tricks

Tips and tricks about a wide range of topics. Mostly programming-related.

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

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

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.

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.

How to force HTTPS with Nginx.

In this guide, we will show you how to force HTTPS on an Nginx server. To do this, we will redirect all “plain” traffic to our HTTPS URLs.

Calculating the mean / average in JavaScript.

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

Why are air bubbles coming out of my toilet?

If there are air bubbles coming up from your toilet, then it probably means that one of your drains is blocked.

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.

MySQL: Server sent charset (255) unknown to the client.

This issue occurs because MySQL 8 changed its default charset to utfmb4. As a result, older software might not be able to connect to it.

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.