Re: regexp novice

On 5/17/2012 9:52 PM, Jim Lucas wrote:

How about this instead? <pre><?php $times = array( '100', # valid '1100', # valid '1300', # invalid '01:00', # valid '12:59', # valid '00:01', # valid '00:25pm', # invalid '0000', # valid 'a00', # invalid '00', # invalid ); foreach ( $times AS $time ) echo "{$time} is ".(valid_date($time)?'valid':'invalid')."\n"; function valid_date($time) { if ( ( $c_time = preg_replace('|[^\d\:]+|', '', $time) ) != $time ) return false; preg_match('#^(?P<hour>\d{1,2}):?(?P<minute>\d{2})$#', $time, $m); if ( $m && ( 0 <= (int) $m['hour'] && 12 >= (int) $m['hour'] ) && ( 0 <= (int) $m['minute'] && 59 >= (int) $m['minute'] ) ) { return TRUE; } return false; } Let me know.

I optimized it a little... http://www.cmsws.com/examples/php/testscripts/shiplu.net@gmail.com/pt_regex.php http://www.cmsws.com/examples/php/testscripts/shiplu.net@gmail.com/pt_regex.phps <pre><?php $times = array(

  '100',      # valid
  '1100',     # valid
  '1300',     # invalid
  '01:00',    # valid
  '12:59',    # valid
  '00:01',    # valid

'00:25pm', # invalid

  '0000',     # valid
  'a00',      # invalid
  '00',       # invalid

); foreach ( $times AS $time ) echo "{$time} is ".(valid_time($time)?'valid':'invalid')."\n"; function valid_time($time) { if (

      preg_match('#^(\d{1,2}):?(\d{2})$#', $time, $m) &&
      ( 0 <= (int) $m[1] && 12 >= (int) $m[1] ) &&
      ( 0 <= (int) $m[2] && 59 >= (int) $m[2] )
     ) {
    return TRUE;

} return FALSE; }