note 90605 added to function.range

This is a modified version of thomas' range_string() function. It's simpler, cleaner, and more robust, but it lacks the advanced features his function had, hopefully it will be of assitance to someone. Examples: input: "1, 2, 3, 4, 5, 6" --> output: 1, 2, 3, 4, 5, 6 input: "1-6" --> output: 1, 2, 3, 4, 5, 6 input: "1-6" --> output: 1, 2, 3, 4, 5, 6 input: "1 - -6" --> output: 1, 2, 3, 4, 5, 6 input: "0 - 0" --> output: 0 input: "1, 4-6, 2" --> output: 1, 2, 4, 5, 6 input: "6,3-1" --> output: 1, 2, 3, 6 <?php define('RANGE_ARRAY_SORT', 1); define('RANGE_ARRAY', 2); define('RANGE_STRING_SORT', 3); define('RANGE_STRING', 4); function range_string($range_str, $output_type = RANGE_ARRAY_SORT) { // Remove spaces and nother non-essential characters $find[] = "/[^\d,\-]/"; $replace[] = ""; // Remove duplicate hyphens $find[] = "/\-+/"; $replace[] = "-"; // Remove duplicate commas $find[] = "/\,+/"; $replace[] = ","; $range_str = preg_replace($find, $replace, $range_str); // Remove any commas or hypens from the end of the string $range_str = trim($range_str,",-"); $range_out = array(); $ranges = explode(",", $range_str); foreach($ranges as $range) { if(is_numeric($range) || strlen($range) == 1) { // Just a number; add it to the list. $range_out[] = (int) $range; } else if(is_string($range)) { // Is probably a range of values. $range_exp = preg_split("/(\D)/",$range,-1,PREG_SPLIT_DELIM_CAPTURE); $start = $range_exp[0]; $end = $range_exp[2]; if($start > $end) { for($i = $start; $i >= $end; $i -= 1) { $range_out[] = (int) $i; } } else { for($i = $start; $i <= $end; $i += 1) { $range_out[] = (int) $i; } } } } switch ($output_type) { case RANGE_ARRAY_SORT: $range_out = array_unique($range_out); sort($range_out); case RANGE_ARRAY: return $range_out; break; case RANGE_STRING_SORT: $range_out = array_unique($range_out); sort($range_out); case RANGE_STRING: default: return implode(", ", $range_out); break; } } // Sample Usage: $range = range_string("6, 3-1"); ?> ---- Server IP: 209.41.74.194 Probable Submitter: 72.24.102.185 ---- Manual Page -- http://www.php.net/manual/en/function.range.php Edit -- https://master.php.net/note/edit/90605 Del: integrated -- https://master.php.net/note/delete/90605/integrated Del: useless -- https://master.php.net/note/delete/90605/useless Del: bad code -- https://master.php.net/note/delete/90605/bad+code Del: spam -- https://master.php.net/note/delete/90605/spam Del: non-english -- https://master.php.net/note/delete/90605/non-english Del: in docs -- https://master.php.net/note/delete/90605/in+docs Del: other reasons-- https://master.php.net/note/delete/90605 Reject -- https://master.php.net/note/reject/90605 Search -- https://master.php.net/manage/user-notes.php