PHP Functions

Built-in Function Example

The length of 'Sahil' is: 5

User-defined Function Example

Full name: Sahil Dhaliya

Explanation

Functions are reusable blocks of code that perform a task. PHP includes many built-in functions like strlen() that you can call anytime to solve common problems. You can also create your own user-defined functions to avoid repeating code. Functions can take inputs (parameters) and return outputs, making programs cleaner, easier to read, and easier to update.

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