Page 309 - Computer Software Application TP - Volume 1
P. 309
COMPUTER SOFTWARE APPLICATION - CITS
EXERCISE 58 : Demonstrate Regular Expressions - The
basic regular expressions, PCRE, Matching
patterns, Finding matches, Replace
patterns, Modifiers, Breakup Strings
Objectives
At the end of this exercise you shall be able to:
• use the basic regular expressions in PHP
• use PCRE function in PHP.
Requirements
Tools/Materials
• Computer/Laptop with latest configuration • PHP
• Operating system: windows 10 or 11 • Text editor
• Apache web server • Web browser
Procedure
TASK 1: Working with basic regular expressions
I Matching a single character
1 Open the text editor
2 Write the following codes
<html >
<head>
<title > Matching a single character </title>
</head>
<body>
<?php
$string = “Hello, world!”;
$pattern = “/w/”; // Matches any word character (alphanumeric or underscore)
if (preg_match($pattern, $string))
{
echo “Match found!”; // Output: Match found!
}
?>
</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
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CITS : IT & ITES - Computer Software Application - Exercise 58
