Tips & Tricks

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

PHP: Return array from include file.

This is a short PHP guide on how to return an array from an included file.

Resident Evil 2: Signal Modulator Puzzle.

This is a guide on how to solve the Signal Modulator puzzles in the remake version of Resident Evil 2.

Check if a MySQL row exists using PHP’s PDO object.

In this tutorial, I will be showing you how to check if a row exists in MySQL. To do this, I will be using PHP’s popular PDO object.

Resident Evil 2: Solving the lion, maiden, and unicorn statue puzzles.

This is a guide on how to solve the lion, maiden, and unicorn statue puzzles in the remake version of Resident Evil 2.

Resident Evil 2: A well-worn key.

A short guide on how to use the well-worn key in the remake version of Resident Evil 2.

Unlocking Leon’s desk in Resident Evil 2.

This is a guide on how to unlock Leon’s desk in Resident Evil 2.

PHP: Get numbers from a string.

This is a short PHP tutorial on how to get numbers from a string using the preg_match_all function.

Resident Evil 2: Unlocking the Portable Safe.

This is a short guide on how to unlock the Portable Safe in the remake version of Resident Evil 2.

PHP: Increase maximum upload size.

This is a short guide on how to increase PHP’s maximum upload size.

Argument passed to function() must be an instance of ClassName.

This is a short guide on how to fix the “argument must be an instance” error in PHP.

PHP: Check if string starts with a specified string.

This is a short PHP guide on how to check if a string starts with a given string.

Setting custom headers with PHP.

This is a guide on how to set custom HTTP response headers using PHP.

PHP: Disable memory limit.

This is a short guide on how to completely disable PHP’s memory limit value.

Power steering stopped working in Vauxhall Insignia.

If the power steering stops working in your vehicle, then your alternator belt might have slipped off.

Getting a random value from a JavaScript array.

This is a short tutorial on how to get a random value from a JavaScript array. To do this, we will have to generate a random index number that represents an element in the array.

Fix: Tainted canvases may not be exported.

The other day, I came across a frustrating CORS-related error while developing a Facebook Instant Game. This is a short post on how I fixed it.

JavaScript: Add image to canvas.

This is a short guide on how to add an image to a canvas element using JavaScript.

JavaScript: How to get the day of the week.

In this guide, we show you how to get the day of the week using JavaScript. We also provide you with a custom function that you can copy.

Calculating the date of Easter with PHP.

This is a short PHP tutorial on how to calculate what date Easter falls on for a given year.

How to create a ZIP file using PHP.

In this guide, I will show you how to create a ZIP file using PHP.

PHP: Force PDF file to download.

This is a short guide on how to force a PDF file to download using PHP.

Receiving XML via POST in PHP.

In this tutorial, I will show you how to receive an XML string via raw post data using PHP.

JavaScript: Check if object property exists.

This is a short JavaScript tutorial on how to check if a given object property exists.

Check if a variable is a JavaScript object.

This is a short guide on how to check if a variable or value if an object using JavaScript.

How to handle an array of PHP objects.

This is a short guide on how to work with a PHP array that contains objects.

MyISAM locking explained.

The other day, some of our users reported that saving data had become extremely slow. In some cases, forms were taking up to 15 seconds to submit.

Printing out JSON with PHP.

In this beginner’s tutorial, I will show you how to print out JSON using PHP and specify the correct Content-Type header.

Fix: Unexpected token o in JSON.

A short guide that I wrote on fixing the dreaded “Unexpected token o in JSON” error.

PHP: Following redirects with cURL.

This is a short guide on how to force PHP’s cURL functions to follow a HTTP redirect.

Using PHP with Radio Buttons.

This is a beginner’s tutorial on how to use the Radio Button HTML element with PHP.

PHP: Get visitor country via Cloudflare CF-IPCountry header.

This is a PHP tutorial on how to retrieve a visitor’s country code from Cloudflare’s CF-IPCountry header.

PHP: Using cURL with Basic HTTP Authentication.

This is a short PHP tutorial on how to use cURL to make a Basic Access Authentication request.

PHP: Get the correct IP address from a Cloudflare request.

This article shows you how to the get the user’s IP address from a Cloudflare request using PHP.

Preventing X-Forwarded-For spoofing in HAProxy.

This is a guide on how to prevent IP spoofing with HAProxy.

Call a PHP function using JavaScript.

This is a common question amongst beginner developers. In this article, I clear up the confusion about it and offer an alternative solution.