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PHP has over 1000 built-in functions that can be called directly, from within a script, to perform a specific task. Please check out our PHP reference for a complete overview of the PHP built-in functions .
Learn how to use user-defined, internal, anonymous, and arrow functions in PHP, a popular general-purpose scripting language. Find the syntax, arguments, return values, and examples of each function type.
Learn how to define and use user-defined functions in PHP, a named block of code that performs a specific task. See how to return values from functions and use HTML code in them.
Learn how to define and use functions in PHP, a popular general-purpose scripting language. See examples of function syntax, arguments, conditional functions, recursive functions, and more.
Find the documentation for all PHP functions in one place. Browse by extension name, category, or keyword to learn how to use them in your code.
1 mar 2022 · If you need to interact with the contents of a variable — change the case, find the length, trim, or sort — there is probably a built-in function for that. Functions are self-contained, reusable blocks of code that accomplish a specific task. They provide modularity and are one method of code reuse.
This course teaches you how to use built-in and custom functions in PHP to perform common and niche tasks. You will also practice creating your own functions and earn a certificate of completion.
