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u show ure sample query...joins are faster than subquery......the performance depends on ur query as well as your database structure.... pls show ur query and ur tables.....
try dis one... <?php if (!preg_match('/[^((0-9)|\-|\(|\)|\+)]+/', $number) && !empty($number)) { print "Valid phone number!!!\n"; } else { print "Please enter valid phone number!!!"; } ?>
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