Re: What is wrong with this preg_match?

On 10/27/11 11:43, "Paul Halliday" <paul.halliday@gmail.com> wrote: > if ($argc == 1 || $argc > 2 || !preg_match("(\d{4}-\d{2}-\d{2})", > >Usage: ./process_patches.php <yyyy-mm-dd> > >patches@innm2 ~/Code/Oculi $ ./process_patches.php 2011-01-011 The problem is that your expression basically defines a 'contains'-type search, so it's matching the first 10 characters as required but then simply ignoring that last, 11th character because there's no requirement regarding it in the expression. Try this instead: ^(\d{4}-\d{2}-\d{2})$ The ^ anchors the matching string to the beginning of the string, while the $ anchors it to the end, which effectively forces the expression to match the entire string, disallowing extra characters before or after it. Regards, Bob -- Robert E. Williams, Jr. Associate Vice President of Software Development Newtek Businesss Services, Inc. -- The Small Business Authority https://www.newtekreferrals.com/rewjr http://www.thesba.com/ Notice: This communication, including attachments, may contain information that is confidential. It constitutes non-public information intended to be conveyed only to the designated recipient(s). If the reader or recipient of this communication is not the intended recipient, an employee or agent of the intended recipient who is responsible for delivering it to the intended recipient, or if you believe that you have received this communication in error, please notify the sender immediately by return e-mail and promptly delete this e-mail, including attachments without reading or saving them in any manner. The unauthorized use, dissemination, distribution, or reproduction of this e-mail, including attachments, is prohibited and may be unlawful. If you have received this email in error, please notify us immediately by e-mail or telephone and delete the e-mail and the attachments (if any).