note 60237 added to function.parse-url

I needed to work both ways (adding & deleteing) query items to the url. Corey's function worked well for adding, but I needed the opposite. I modifed his to work for both ways leaving me with this: <?php /** * Edit the Query portion of an url * * @param string $action ethier a "+" or a "-" depending on what action you want to perform * @param mixed $var array (+) or string (-) * @param string $uri the URL to use. if this is left out, it uses $_SERVER['PHP_SELF'] * @version 1.0.0 */ function ChangeQuery($action, $var = NULL, $uri = NULL) { if (($action == "+" && ! is_array($var)) || ($action == "-" && $var == "") || $var == NULL) return FALSE; if (is_null($uri)) {//Piece together uri string $beginning = $_SERVER['PHP_SELF']; $ending = ( isset($_SERVER['QUERY_STRING']) ) ? $_SERVER['QUERY_STRING'] : ''; } else { $qstart = strpos($uri, '?'); if ($qstart === false) { $beginning = $uri; //$ending is '' anyway } else { $beginning = substr($uri, 0, $qstart); $ending = substr($uri, $qstart); } } if (strlen($ending) > 0) { $vals = array(); $ending = str_replace('?','', $ending); parse_str($ending, $vals); if ($action == "+") $vals[$var[0]] = $var[1]; $ending = ''; $count = 0; foreach($vals as $k => $v) { if ($action == "-" && $k == $var) continue; if ($count > 0) { $ending .= '&'; } else { $count++; } $ending .= "$k=" . urlencode($v); } } else { $ending = $varName . '=' . urlencode($varVal); } $result = $beginning . '?' . $ending; return $result; } ?> with this test: <?php $url = "http://www.somesite.com/somepage.php?id=53&sec=1&sort=up"; $url = ChangeQuery("+",array("test",5),$url); echo $url."<br>"; $url = ChangeQuery("-","sort", $url); echo $url."<br>"; $url = ChangeQuery("-","test", $url); echo $url."<br>"; $url = ChangeQuery("+",array("sort","dn"), $url); echo $url."<br>"; ?> I got http://www.somesite.com/somepage.php?id=53&sec=1&sort=up&test=5 http://www.somesite.com/somepage.php?id=53&sec=1&test=5 http://www.somesite.com/somepage.php?id=53&sec=1 http://www.somesite.com/somepage.php?id=53&sec=1&sort=dn ?> If you're adding to the url, the second argument has to be an array, where the first element is the name and the second is the value. If you're deleting from the query, it's the name of var to delete I hope this helps somebody down the line. ---- Manual Page -- http://www.php.net/manual/en/function.parse-url.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+60237 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+60237&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+60237&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+60237&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+60237&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+60237&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+60237&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+60237&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+60237&report=yes Search -- http://master.php.net/manage/user-notes.php