Z algorithm implementation in PHP

[chandrikadeb7]

Fixes #2478

Checklist:

• 4 space indentation.
• Coding conventions are followed.
• Input is taken dynamically.
• Sample Input / Output is added at the end of file.
• Logic Documentation (Comments).
• File names are correct.

Make sure these boxes are checked before your pull request (PR) is ready to be reviewed and merged. Thanks!

Changes proposed in this pull request:

• Added implementation of Z algorithm in PHP

Languages Used:

• PHP

Files Added:

• Z_Algorithm.php

We're happy to help you get this ready -- don't be afraid to ask for help.

Thanks!

[chandrikadeb7]

@raghav-dalmia Please review.

[asha15]

Your code has plagiarism

I warned you so many times and asked you to submit your own work. if you submit someone else's work again , we take the final decision to remove you from the project