PHP TutorialLesson 20Free preview

PHP Functions

This lesson is part of PHP · All levels

Summary

A function is a block of code named that can be called over and over again, thus avoiding repeating the same code. This lesson discusses how to declare a function, send parameters, determine default values, and return results with return. With functionality, the program becomes more structured and easier to test.

Key points

Functions are created with the keyword function followed by the name and the curve
The value sent at the call is called the argument, declared as a parameter
The parameter can be given a default value with the equals sign
Returns the result to the function called

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