Introduction to Functions in PHP
Get started learning about functions in PHP so you can create your own reusable blocks of code.
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Key Concepts
Review core concepts you need to learn to master this subject
PHP Variable Scope
return statement in PHP
Invoking a function in PHP
Define PHP Function
Camel Case Function
PHP Variable Scope
PHP Variable Scope
<?php
$x = 6;
function scope(){
$y = 7;
echo $x;
// prints 'undefined variable'
global $x;
echo $x;
// prints 6
echo $y;
// prints 7
}
scope();A variable with local scope can only be accessed within the function it is declared. A variable with global scope can be accessed from multiple functions in the PHP script.
Introduction to PHP Functions
Lesson 1 of 1
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How you'll master it
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Introduction to Functions in PHP
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