Page 325 - Computer Software Application TP - Volume 1
P. 325
COMPUTER SOFTWARE APPLICATION - CITS
<html >
<head>
<title> Using preg_quote() </title>
</head>
<body>
<?php
// String containing characters to be quoted
$string = “Escaping: .\+*?[^]{}()$=!|:-”;
// Quote the string to escape regular expression characters
$quotedString = preg_quote($string);
// Regular expression pattern containing the quoted string
$pattern = ‘/^’ . $quotedString . ‘$/’;
// Test string to match against the pattern
$testString = “Escaping: .\\+*?[^]{}()$=!|:-”;
// Perform regular expression matching
if (preg_match($pattern, $testString)) {
echo “String matches the pattern.\n”;
} else {
echo “String does not match the pattern.\n”;
}
?>
</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
1 Provide an example of using a regular expression to match a single character in PHP
2 Provide an example of a regular expression pattern in PHP that matches any digits 0 to 9?
3 Provide an example of exclude specific characters from a set when using a regular expression in PHP?
4 Provide an example of a regular expression in PHP that matches exactly three occurrences of a specific
pattern?
5 provide an example of a regular expression in PHP that matches a word boundary at the beginning of a word?
6 Give an example of a situation where using the (case-insensitive) modifier in PHP regular expressions?
7 Provide an example of a complex regular expression pattern where using the (extended) modifier in PHP
would enhance readability.
8 Provide an example of the (extended) modifier changes the behavior of whitespace and comments within a
regular expression pattern.
9 Provide an example of how to use preg_match_all() in PHP to extract multiple occurrences of a pattern from
a string?
10 Provide an example of preg_split() handle capturing groups within the regular expression pattern when splitting
a string in PHP
11 Give a sample PHP code of using regular expressions for email validation?
310
CITS : IT & ITES - Computer Software Application - Exercise 58
