Preg_replace Template replacement which doesn't cause undefined index errors

Preg_replace Template replacement which doesn't cause undefined index errors

References

Reference NO 1

http://stackoverflow.com/questions/13635776/preg-replace-template-replacement-which-doesnt-cause-undefined-index-errors

Reference NO 2

http://stackoverflow.com/questions/4712444/preg-replace-error

Reference NO 3

http://stackoverflow.com/questions/14125266/finding-and-replacing-attributes-using-preg-replace

Reference NO 4

http://stackoverflow.com/questions/8176804/preg-replace-an-email-template-user-first-name-to-john

Reference NO 5

http://www.devthought.com/2009/06/09/fix-ereg-is-deprecated-errors-in-php-53/

Reference NO 6

http://forums.oscommerce.com/topic/393399-add-on-help-please/nextunread/

Reference NO 7

http://php.net/manual/fr/function.json-encode.php

Reference NO 8

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