Learn PHP Online

This guide will show you how to use PHP's is_numeric() function. This function allows you to check if a string is a number or a numeric string. It helps verify that the data you have received contains a number. Read More...

In this tutorial, you will learn how to use the in_array() function in PHP. Using this function, you can quickly check whether a value exists within an array. It is cleaner to use than writing a for or foreach loop to process the array. Read More...

This guide will teach you how to get the current page URL in PHP. There is no inbuilt function to get the current URL. Instead, we have to build it from the $_SERVER super global. This super global contains data such as the request URI. Read More...

In this tutorial, we will discuss how to use and write a foreach loop in PHP. They are great for iterating through arrays or objects. Highly recommend learning how to use this type of loop. Read More...

This tutorial shows you how to read and write a switch statement in PHP. We also go through some of the reasons why you may want to use a switch instead of a series of if-else statements. Read More...

This guide will show you how to use the explode function in PHP. By utilizing this function, you can convert a string to an array. It achieves this conversion by splitting a string by the specified separator. Read More...

In this tutorial, you will learn how to use the implode function in PHP. This function allows you to combine all values of an array into a string, joined by the defined separator. So effectively, it converts an array to a string. Read More...

This tutorial shows you how to generate an MD5 hash for either a file or string. While useless for security, this hash still has its uses. It can be used as a quick hash to validate that two files are the same. Read More...

This tutorial will show you how to use the sleep and usleep functions in PHP. These allow you to pause the execution of the running script. Sleep sleeps the script in seconds, usleep sleeps the script in microseconds. Read More...

This tutorial will show you how to use the str_replace function in PHP. This function allows you to find and replace text within a string quickly. In addition, it can handle different matches on a string with different text replacements. Read More...

In this tutorial, I go through how and when to use require and require_once in PHP. These two statements are useful for including essential scripts and files into your PHP code. Read More...

Learn how to use and declare constants within the PHP language. This guide will show you how to use the define() function and the const keyword. This function and keyword affect the way a constant can be declared in PHP. Read More...

In this tutorial, we take you through the basics of using and writing a for loop in the PHP programming language. It is a vital code control structure that I recommend you learn. Read More...

In this guide, we will be showing you how to create a directory in PHP using the mkdir function. This function even allows you to set permissions on new folders. It also has the ability to create entire directory trees. Read More...

In this tutorial, we will discuss how to write a do while loop in PHP. It is a crucial loop to understand if you wish to program using PHP. Luckily, they are super easy to learn quickly. Read More...

This tutorial will show you how to use the var_dump function in PHP. This function helps debug values stored in variables. It allows you to dump variable information, including its data type and name. Read More...

In this guide, we will walk you through how you can define a string in the PHP language. A string is defined as a sequence of characters. There are multiple ways to define a string, each with its own purpose. Read More...

Learn how and when to use include and include_once in PHP. These two statements are often used in PHP to include additional scripts and files. This tutorial is highly recommended if you are new to PHP. Read More...

In this guide, we will show you the operators supported by the PHP language. Operators are a critical part of coding with PHP. They perform operations on one or more values to create a new resulting value. Read More...

In this tutorial, we will be going through how to write a while loop in PHP. A while loop is extremely useful when you want to control code in a certain way. It is a must-know if you plan on programming. Read More...