The document outlines four PHP programming practical exercises: 1) implementing form validations like IP address, domain name, email using regular expressions; 2) demonstrating five regular expression functions; 3) performing associative array operations like sorting, modifying, traversing, merging, counting elements in PHP; 4) performing numerical array operations like the ones in the previous practical. The practical sections provide the aim, sample program code, and expected output for each exercise.

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WEEK 6
Regular expression
Practical 1
 Aim: Implement following validations in a PHP form using Regular
expression in PHP.
 IP Address
 Domain Name
 Email ID
 10 digit Mobile
 Password
 User Name
 Program:

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 Output:

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Practical 2
 Aim: Prepare codeto demonstrate any five regex function from.
 Program:

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 Output:

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Array in PHP
Practical 3
 Aim: Implement following operations on array in PHP.
Array Operations (Associative Approach):
1) Sorting of array
2) Modification of Array (adding / removing / updating)
3) Traversing array
4) Merging Array
5) Counting Elements
6) Diff between two Arrays
7) Check Element Exist in Array
8) String to array and vice-versa
 Program:

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 Output:

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Practical 4
 Aim: Implement following operations on array in PHP.
Array Operations (Numerical Approach):
1) Sorting of array
2) Modification of Array (adding / removing / updating)
3) Traversing array
4) Merging Array
5) Counting Elements
6) Diff between two Arrays
7) Check Element Exist in Array
8) String to array and vice-versa
 Program:

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 Output: