php preg_replace问题..如何摆脱空间？

Question

$thisdate = '2011-01-18 14:52:33';

$security = preg_replace('/[^\d\s]/', '', $thisdate);

echo $security;

This results in 20110118 145233

How would i get rid of the space?

Thanks.

Answer 1

your regex matches everything that is not(^) digit(\d) or space(\s)

so if you remove the \s

preg_replace('/[^\d]/', '', $thisdate);

will replace everything except digits