PHP preg_replace_callback variables optimization

PHP preg_replace_callback variables optimization

References

Reference NO 1

http://stackoverflow.com/questions/15200475/php-preg-replace-callback-variables-optimization

Reference NO 2

http://stackoverflow.com/questions/9550769/passing-additional-arguments-to-preg-replace-callback-using-php-5-2-6

Reference NO 3

http://hungred.com/useful-information/php-micro-optimization-tips/

Reference NO 4

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

Reference NO 5

http://forums.devshed.com/regex-programming-147/variable-in-preg-replace-pattern-not-working-875603.html

Reference NO 6

http://www.w3schools.com/php/func_string_str_replace.asp

Reference NO 7

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Reference NO 8

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