? PHP Function with Returning Value

? Quick Overview

In PHP, functions can return values, which allows you to store the result in variables or use it directly in expressions. Advanced cases involve returning arrays, objects, or using conditional returns.

? Key Concepts

• Functions can return data using the return keyword
• Returned values can be stored, echoed, or reused
• Multiple data can be returned using arrays or objects

? Syntax / Theory

// Basic function syntax with return value
function functionName($param1, $param2) {
return $param1 + $param2;
}
$result = functionName(5,10);

? Example 1: Returning a Simple Value

// Function returning a single numeric value
<?php
function add($a,$b){
return $a + $b;
}
echo add(5,10);
?>

? Example 2: Returning an Array

// Function returning multiple values as an array
<?php
function getUserInfo(){
return ['name'=>'Alice','email'=>'alice@example.com'];
}
$user = getUserInfo();
echo $user['name'];
echo $user['email'];
?>

? Example 3: Conditional Return

// Function returning different values based on condition
<?php
function checkAge($age){
if($age >= 18){
return "Adult";
}
return "Minor";
}
echo checkAge(20);
?>

? Example 4: Returning Objects

// Function returning an object instance
<?php
class Person{
public $name;
function __construct($name){
$this->name = $name;
}
}
function createPerson($name){
return new Person($name);
}
$p = createPerson("Bob");
echo $p->name;
?>

? Live Output / Explanation

The returned value replaces the function call. PHP immediately exits the function once return is executed.

? Interactive Example

Conceptual flow of function return:

? Use Cases

• Calculations and data processing
• Fetching database results
• Generating reusable logic blocks