Variable Scope : Variable Scope « Language Basics « PHP






  1. PHP
  2. Language Basics
  3. Variable Scope

Variable Scope

 
<?php 
  $num;

  function make_triple($arg)
  {
    global $num;
    $num = $arg + $arg +$arg;
    thrice();

  }

  function thrice()
  {
    global $num;
    echo("The value is $num");
  } 
?>

<html>
 <head>
  <title>Variable Scope</title>
 </head>
 <body>

  <h3> <?php make_triple(4); ?> </h3>

 </body>
</html>








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3.Scope of a Variable
4.Variable Scope: A Variable Declared Within a Function Is Unavailable Outside the Function
5.Variables Defined Outside Functions Are Inaccessible from Within a Function by Default
6.Defining Variable Scope
7.More Working with Variable Scope
8.local variables
9.Variable Scope in Functions
10.Variable Scope: A Variable Declared Within a Function Is Unavailable Outside the Function