is there a quick way to remove non numeric chars

From: chris (someone_at_here.com)
Date: 11/30/04


Date: Tue, 30 Nov 2004 23:54:46 +0800

is there a quick and easy way to check a string for non numeric characters ?

i have thought of making a routine to check each character to confirm it is
0 - 9 but was wondering if there was a quicker way???



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