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| Code | |||||
<?php /* Name: RemoveUrlParam.php3 AUTHOR: Ulysses J Ludwig AUTHOR URL: www.ujludwig.com DATE CREATED: 1.24.00 LAST MODIFIED: 3.06.00 (6:30 PM) INCLUDED BY: Lib.inc CALLED BY: Anywhere PREREQUISITES: None COMMENTS: The script removes a url parameter from a url string. Please note: I am sure there is a way to shorten this script, but then no one would be able to read it but me. Ergo it is longer for a reason. Also, if the url passed in is already encoded, then the parameter should also be encoded first EXAMPLE: Fn_remove_url_param("$Url&ParamVariable","param_name"); */ ///////////////////////////////////////////////////////////////////////////////////////// //////////// (REMOVE URL PARAMETER) CALLED FROM ANYWHERE ///////////////////////////// function Fn_remove_url_param($In_url, $In_param_name) { trim($In_url); $qm = chr(63); // Creates a question mark $L_qm_pos = strpos($In_url, $qm) + 1; // Creates a variable that holds the position of the question mark (it may be 0 if there is no question mark) // When searching for the parameter, make sure that it is // proceeded by an & or ? and followed by an = sign $L_search_string = ("?" . $In_param_name . "="); $L_param_pos = strpos($In_url,$L_search_string); if (!empty($L_param_pos)) { // Parameter is led by ?... preserve the question mark $L_param_pos++; } else { $L_search_string = ("&" . $In_param_name . "="); $L_param_pos = strpos($In_url, $L_search_string); } if (!empty($L_param_pos)) { // The parameter exists in the param string so remove it // Find the end of the param name value pair for ($i = $L_param_pos + 1; $i <= strlen($In_url); $i++) { $L_character = (substr($In_url, $i, 1)); if ($L_character == " " or $L_character == "&") { $i ++; break; } } $In_url = substr($In_url, 0,$L_param_pos) . substr($In_url, $i - 1, strlen($In_url)); } return Fn_repair_url($In_url); // Return the page } //////////////////////////////////////////////////////////////////////////////////// //////////// Repair URL //////////////////////////////////////////////////////// function Fn_repair_url($In_url) { $L_pos = strpos($In_url, "?&"); if (!empty($L_pos)) { // Remvove the & $In_url = substr($In_url, 0,$L_pos + 1) . substr($In_url, $L_pos + 2, strlen($In_url)); } $L_pos = strpos($In_url, "&&"); if (!empty($L_pos)) { // Remove one of the &s $In_url = substr($In_url, 0,$L_pos + 1) . substr($In_url, $L_pos + 2, strlen($In_url)); } if (strpos($In_url, "?") > 0 and (strpos($In_url, "?") == strlen($L_url))) { // Then the question mark that is trailing has no parameters, remove it $In_url = substr($In_url, 0, strlen($L_url - 1)); } return $In_url; } ?> | |||||
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