How to remove a part of a string prior to a symbol in PHP

How to remove a part of a string prior to a symbol in PHP

References

Reference NO 1

http://stackoverflow.com/questions/7802821/php-remove-all-characters-before-specific-string

Reference NO 2

http://stackoverflow.com/questions/780374/cut-string-before-a-symbol-with-php

Reference NO 3

https://forums.digitalpoint.com/threads/remove-everything-before-in-my-string.611669/

Reference NO 4

http://php.net/manual/en/function.substr.php

Reference NO 5

http://php.net/manual/en/function.strstr.php

Reference NO 6

http://www.freewebspace.net/forums/showthread.php?2205862-PHP-Trim-all-characters-after-specific-character-in-string

Reference NO 7

http://www.tuxradar.com/practicalphp/4/7/5

Reference NO 8

http://www.phpjabbers.com/ask89-remove-last-character-from-string-in-php.html