Build and then call a function : Definition « Functions « PHP






  1. PHP
  2. Functions
  3. Definition

Build and then call a function

 
<?php

  function helloworld (){
    echo "Hello World!<br />";
  }

  helloworld();
  
  function saysomething ($something){
    echo $something . "<br />";
  }
  Saysomething ("Hello World!"); //This would output "Hello World!"

  function addvalues ($firstvalue, $secondvalue){
    return $firstvalue + $secondvalue;
  }
  $newvalue = addvalues (1,3); 
  echo $newvalue; 

?>








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7.A Function to Build Query Strings
8.A function that calculates sales tax
9.Accessing a Global Variable from Within a Function
10.Call the function
11.Create a User Function
12.Defining functions before or after calling them
13.Creating and calling a function that accepts arguments
14.Define constant in a function
15.nesting functions
16.global key word in a function
17.Variables Defined Outside Functions Are Inaccessible from Within a Function by Default
18.Using nested functions