note 52125 added to function.ereg

can i use eregi to do this? i want to check for the validation of ISBN i.e. it can accept data that contain 3 dash(-), saparating 10 digits into 4 groups of no. with the first and the last group should have 1 digit only here's the examples: 0-0-0000000-0 0-00-000000-0 0-000-00000-0 0-0000-0000-0 0-00000-000-0 0-000000-00-0 0-0000000-0-0 ---- Manual Page -- http://www.php.net/manual/en/function.ereg.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+52125 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+52125&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+52125&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+52125&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+52125&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+52125&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+52125&report=yes Search -- http://master.php.net/manage/user-notes.php