PHP – Warning: Cannot use a scalar value as an array.
This is a PHP error that happens whenever you attempt to use a scalar value as an array.
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Fix: PHP is being displayed in the browser.
Fixing the issue with PHP being displayed in the browser.
Read More...How to mix PHP and HTML
In this article, we discuss why you should avoid mixing PHP and HTML.
Read More...Downloading files with cURL in PHP
This is a simple tutorial on how to download files with cURL in PHP.
Read More...PHP: Set cURL User Agent
This tutorial shows you how to use a custom user agent with the cURL functions in PHP.
Read More...Avoiding undefined index / offset errors in PHP.
This is a short guide on how to “fix” undefined index / offset errors in PHP.
Read More...Check to see if a session has already been started in PHP.
This is a simple guide on how to check to see if session_start has already been called in PHP.
Read More...Pinging a website with PHP.
Pinging a website in PHP is pretty easy if you know how to use the function fsockopen.
Read More...How to expire PHP sessions.
This is a simple guide on how to expire user sessions in PHP after a set amount of time.
Read More...How to calculate the difference between two dates using PHP.
In this guide, we show you how to calculate the difference between two dates in PHP. We’ll also tell you how to convert it into other formats.
Read More...Fix: Class contains abstract methods and must therefore be declared abstract or implement the remaining methods.
In this article, we look at at the fatal PHP error “class contains abstract methods”. We also give you tips on how to fix it.
Read More...Modifying a JSON file with PHP.
This is a short guide on how to modify a JSON file with PHP.
Read More...How to detect AdBlock users.
In this tutorial, we will show you how to detect AdBlock users with JavaScript. This can be done with a few lines of code.
Read More...Ajax request returning the same results in Internet Explorer.
A solution for preventing IE from caching Ajax results.
Read More...PHP: Error handling with cURL
A simple guide on how to handle cURL errors in PHP.
Read More...Sending JSON via POST in PHP
A simple guide on how to send JSON via a POST request in PHP
Read More...PHP: Looping through the characters of a string.
This is a simple guide on how to loop through the characters of a string in PHP.
Read More...Passing a PHP array to JavaScript.
This is a guide on how to pass PHP arrays to JavaScript.
Read More...PHP – Using Recursion to print out values in a multidimensional array.
A simple guide on how to print out values in a PHP multidimensional array.
Read More...Restricting access to a page based on the referrer.
As you probably already know, PHP has an array called $_SERVER, which contains information such as: The server name. The request method (whether the request is POST, GET or PUT, etc). The IP address of the user. The visitor’s user agent. It has also has an index called HTTP_REFERER, which should give you the address of […]
Read More...Generating and building HTML with JavaScript
A look at some of the ways that developers construct and build HTML with JavaScript.
Read More...Resizing images on upload VS Resizing images on the fly
In this article, we are going to look at why resizing images on upload is better than dynamically resizing them “on the fly”.
Read More...Creating a “Hot” algorithm with PHP and MySQL
A simple guide to creating a Reddit-style “What’s Hot” page with PHP and MySQL.
Read More...How to validate HTML forms using PHP.
In this guide, we are going to show you how to validate HTML forms using PHP.
Read More...Common measurement conversions in PHP
One of the tricky things about being a web developer is that you are sometimes forced to accommodate visitors that use different measurement systems and formats. Currency symbols, date formats and measurement systems can all differ from one user to the next. The following PHP code snippets will help you to convert between some of […]
Read More...MySQL: A guide on which columns to use.
In this guide, we tell you what MySQL columns to use when storing different types of information.
Read More...Is client-side hashing secure?
Client-side password hashing is not secure. It is not a valid substitute for transporting passwords over SSL.
Read More...Performance differences between Single Quotes and Double Quotes in PHP.
Simply put, there are no performance differences between using singles quotes or double quotes in PHP.
Read More...PHP – Best Practises
A comprehensive list of the best PHP / web development practises that every developer should know about.
Read More...PHP: Check if an HTTP resource exists.
In this tutorial, we show you how to send a HEAD request using PHP and cURL. This is useful if you need to check if a remote file exists.
Read More...Slow MySQLi connection on Windows 7.
Not so long ago, I came across a peculiar issue with PHP’s MySQLi extension. For some strange reason, using the string “localhost” in the constructor will sometimes result in an unexpected delay in connectivity. For example, connecting to MySQL will take 1-2 seconds. This is despite the fact that the DBMS is on a local […]
Read More...Generating Google Maps markers with PHP.
On too many occasions, I’ve come across developers using PHP loops to print out large amounts of JavaScript data. This seems to be particularly common among coders who are trying to generate multiple markers for the Google Maps API. Typically, they will grab a bunch of long / lat values from their database and then […]
Read More...PHP – Redirecting a form with POST variables.
On more than one occasion, I’ve come across novice PHP developers looking for ways to redirect the user and their submitted form variables to an external website. More often than not, they’ll ask if they can somehow attach POST variables to a header redirect. After this fails and they finally realize that another solution is […]
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