note 89773 added to function.checkdate

<?php /* ## converts a given date format to another date format returns date if the checked date given is valid; otherwise returns NULL ## $s_date the date in e.g. dd/mm/yyyy ## $s_from, $s_to date formats from to i.e. convertdate('13/04/2009','eng','iso','-'); output: 2009-04-13 ## date formats available ## 'eng' = dd/mm/yyyy ## 'usa' = mm/dd/yyyy ## 'iso' = yyyy/mm/dd ## $s_return_delimiter returned delimiter e.g. '-' would return dd-mm-yyyy */ function convertdate($s_date,$s_from,$s_to,$s_return_delimiter) { $s_return_date = ''; $s_from = strtolower($s_from); $s_to = strtolower($s_to); $s_date = str_replace(array('\'', '-', '.', ',', ' '), '/', $s_date); $a_date = explode('/', $s_date); switch($s_from) { case 'eng': # dd/mm/yyyy $day = $a_date[0]; $month = $a_date[1]; $year = $a_date[2]; break; case 'usa': # mm/dd/yyyy $month = $a_date[0]; $day = $a_date[1]; $year = $a_date[2]; break; case 'iso': # yyyy/mm/dd $year = $a_date[0]; $month = $a_date[1]; $day = $a_date[2]; break; default: # error message user_error('function convertdate(string $s_date, string $s_from, string $s_to, string $s_return_delimiter) $s_from not a valid type of \'eng\', \'usa\' or \'iso\''); return NULL; } # substitution fixes of valid alternative human input e.g. 1/12/08 if (strlen($day)==1) { $day='0'.$day; } # day -trailing zero missing if (strlen($month)==1) { $month='0'.$month; } # month -trailing zero missing if (strlen($year)==3) { $year=substr(date('Y'),0,strlen(date('Y'))-3).$year; } # year -millennium missing if (strlen($year)==2) { $year=substr(date('Y'),0,strlen(date('Y'))-2).$year; } # year -century missing if (strlen($year)==1) { $year=substr(date('Y'),0,strlen(date('Y'))-1).$year; } # year -decade missing switch($s_to) { case 'eng': # dd/mm/yyyy $s_return_date = $day.$s_return_delimiter.$month.$s_return_delimiter.$year; break; case 'usa': # mm/dd/yyyy $s_return_date = $month.$s_return_delimiter.$day.$s_return_delimiter.$year; break; case "iso": # yyyy/mm/dd $s_return_date = $year.$s_return_delimiter.$month.$s_return_delimiter.$day; break; default: # error message user_error('function convertdate(string $s_date, string $s_from, string $s_to, string $s_return_delimiter) $s_to not a valid type of \'eng\', \'usa\' or \'iso\''); return NULL; } # if it's an invalid calendar date e.g. 40/02/2009 or rt/we/garbage if (!is_numeric($month) || !is_numeric($day) || !is_numeric($year)) { return NULL; } elseif (!checkdate($month, $day, $year)) { return NULL; } return $s_return_date; } echo convertdate('13/04/2009','eng','iso','-'); ?> ---- Server IP: 203.89.181.186 Probable Submitter: 202.180.89.170 ---- Manual Page -- http://www.php.net/manual/en/function.checkdate.php Edit -- https://master.php.net/note/edit/89773 Del: integrated -- https://master.php.net/note/delete/89773/integrated Del: useless -- https://master.php.net/note/delete/89773/useless Del: bad code -- https://master.php.net/note/delete/89773/bad+code Del: spam -- https://master.php.net/note/delete/89773/spam Del: non-english -- https://master.php.net/note/delete/89773/non-english Del: in docs -- https://master.php.net/note/delete/89773/in+docs Del: other reasons-- https://master.php.net/note/delete/89773 Reject -- https://master.php.net/note/reject/89773 Search -- https://master.php.net/manage/user-notes.php