Web Reference: 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. In this tutorial you will learn how to define and call a custom function in PHP to save the repetition of code and make your code much easier to maintain. Any valid PHP code may appear inside the body of a function, even other functions and class definitions. Function names follow the same rules as other labels in PHP. A valid function name starts with a letter or underscore, followed by any number of letters, numbers, or underscores.
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How To Use Php Function Net Worth 2026: Salary, Income & Wealth Net Worth & Biography
Estimated Worth: $46M - $56M
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Last Updated: April 7, 2026
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