Page 250 - Computer Software Application TP - Volume 1
P. 250
COMPUTER SOFTWARE APPLICATION - CITS
EXERCISE 52 : Demonstrate on Function and returning
value from function, user defined
functions, dynamic functions, variable
scope, accessing variable with the
global statement, Function calls with the
static statement, setting default values
for arguments, Passing arguments to a
function by value, Passing arguments
to a function by reference, Testing for
function existence
Objectives
At the end of this exercise you shall be able to
• create and use user defined functions in PHP
• check different variable scope in PHP
• test the existence of function in PHP.
Requirements
Tools/Materials
• Computer/Laptop with latest configuration • PHP
• Operating system: windows 10 or 11 • Text editor
• Apache web server • Web browsers
Procedure
TASK 1: Create user defined functions
1 Open the text editor
2 Write the following codes
<html>
<body>
<?php
function writeMsg()
{
echo “Hello world!”;
}
writeMsg();
?>
</body>
</html>
3 Save the program in C:\Apache24\htdocs in a folder with .php extension
4 Run the Apache services from windows services
5 Open the browser and type the following address
http://localhost/foldername/
6 Click the php file to run and verify the output
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