Php > Strings

Remove URL Parameter Substr Strstr

Remove URL Parameter Substr Strstr

<?php 
   
     (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; 
} 
?>