How could I Separate characters and numbers from an input and store as separate variables php

How could I Separate characters and numbers from an input and store as
separate variables php

References

Reference NO 1

http://stackoverflow.com/questions/15197073/how-could-i-separate-characters-and-numbers-from-an-input-and-store-as-separate

Reference NO 2

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

Reference NO 3

http://php.net/manual/en/function.number-format.php

Reference NO 4

http://www.homeandlearn.co.uk/php/php7p5.html

Reference NO 5

http://bytes.com/topic/php/insights/664241-using-html-forms-pass-data-php

Reference NO 6

http://www.ehow.com/info_12040498_number-words-php-string.html

Reference NO 7

http://www.tizag.com/phpT/php-string-explode.php

Reference NO 8

http://www.w3schools.com/php/php_filter.asp?output=print