Determine whether a variable is considered to be empty. A variable is considered empty if it does not exist or if its value equals false. empty () does not generate a warning if the variable does not exist.

The empty () function checks whether a variable is empty or not. This function returns false if the variable exists and is not empty, otherwise it returns true.

Sep 24, 2024 · The empty () function in PHP checks whether a variable is empty. It returns true if the variable has a value considered "empty," such as 0, null, false, an empty string, or an unset variable, …

In this tutorial, you'll learn how to use the PHP empty () construct to check if a variable is empty.

Apr 16, 2025 · PHP empty keyword tutorial shows how to check for empty values in PHP. Learn empty () with practical examples.

The empty () function is a built-in function in PHP that checks whether a variable is empty. A variable is considered empty if it does not exist, or if its value

Dec 27, 2023 · Thankfully, PHP includes a very useful built-in function – empty () – specifically designed for this purpose. By using empty (), you can easily test if a variable contains a value considered …

Aug 19, 2022 · The empty () function is used to check whether a variable is empty or not. Often, you may encounter a scenario, when you need to code in fashion if a variable is empty or another thing if …

Dec 2, 2021 · This easy tutorial will show you how to use the PHP empty () function to check whether a variable can be considered empty and show some code examples.

Jul 23, 2025 · An empty variable can refer to a variable that has not been set, a variable that has been explicitly set to an empty value, or a variable that contains a value that is considered empty. In this …