PHP - Base64 Encoded Urls

Hi all,

I am looking a developing a script that instead of using something like mysite.com/showproduct.php?id=1 I would like it to appear as mysite.com/php-editor

Is their a simple way of doing this? I would still need to pull info from a database so the page would still need to be dynamic, I just want it to appear static!

I am used to using the get id function of php, what would the workaround be? would the id be hidden from the url but still usable in a query?

I have had a look at the apache mod_rewrite, but quite frankly, I dont understand it!

Cheers

Hi, Im trying to use base64_decode on a string, however the string is sometimes plain text others its encoded, how can i test to see if the sting is encoded or plaintext and only perform the decode if the string is indeed encoded? Im pretty new to PHP, but ive seen mentions of regex or preg_match for certain characteristics of base64 encoded, my one observation is it usually ends in == which wouldnt appear in my plain text, could i do a preg match for that?

Hello,
I am trying to export data from database. the exported data is creted with wrong encoding.

I am using this code:
   header("Pragma: public");
   header('Expires: '.gmdate('D, d M Y H:i:s').' GMT');
   header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
   header("Cache-Control: private",false);
   header("Content-Type: application/force-download;charset=utf-8; encoding=UTF-8");
   header('Content-Disposition: attachment; filename="'.$newFile.'"');
   header("Content-Transfer-Encoding: binary");
   header('Content-Length: '.@filesize($path));


Please help with the encoding. Thanks.

url("data:image/png;base64,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") 

How do I go about decoding this, it contains a number of different images 

I have implemented the base64_encode() function with some custom  mapping table so I could encode some binary data more securely without anyone knowing how to decode it

here is the class

<?php 

class Base64 {
    
    /**
     * I have changed letter placement (P <=> x, S <=> 9) and the cases
     * You can completely redo the mapping table
     */

    private static $BinaryMap = array(
        'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', //  7
        'i', 'j', 'k', 'l', 'm', 'n', 'o', 'x', // 15
        'q', 'r', '9', 't', 'u', 'v', 'w', 'x', // 23
        'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', // 31
        'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', // 39
        'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', // 47
        'W', 'P', 'Y', 'Z', '0', '1', '2', '3', // 55
        '4', '5', '6', '7', '8', 'S', '+', '/', // 63 
        '=',  // padding char
    );
    
    public function __construct() {}
    
    public function base64_encode($input) {
        
        $output = "";
        $chr1 = $chr2 = $chr3 = $enc1 = $enc2 = $enc3 = $enc4 = null;
        $i = 0;
        
//        $input = self::utf8_encode($input);
        
        while($i < strlen($input)) {
            $chr1 = ord($input[$i++]);
            $chr2 = ord($input[$i++]);
            $chr3 = ord($input[$i++]);
            
            $enc1 = $chr1 >> 2;
            $enc2 = (($chr1 & 3) << 4) | ($chr2 >> 4);
            $enc3 = (($chr2 & 15) << 2) | ($chr3 >> 6);
            $enc4 = $chr3 & 63;
            
            if (is_nan($chr2)) {
                $enc3 = $enc4 = 64;
            } else if (is_nan($chr3)) {
                $enc4 = 64;
            }
            
            $output .=  self::$BinaryMap[$enc1]
                      . self::$BinaryMap[$enc2]
                      . self::$BinaryMap[$enc3]
                      . self::$BinaryMap[$enc4]; 
        }
        
        return $output;
    }
    
    public function utf8_encode($input) {
        $utftext = null;
        
        for ($n = 0; $n < strlen($input); $n++) {

            $c = ord($input[$n]);
            
            if ($c < 128) {
                $utftext .= chr($c);
            } else if (($c > 128) && ($c < 2048)) {
                $utftext .= chr(($c >> 6) | 192);
                $utftext .= chr(($c & 63) | 128);
            } else {
                $utftext .= chr(($c >> 12) | 224);
                $utftext .= chr((($c & 6) & 63) | 128);
                $utftext .= chr(($c & 63) | 128);
            }
        }
        
        return $utftext;
    }
}

?>

and the usage as follows:

<?php
$string = pack('H*', "31c85c5aaa56c1f0102301ea497d0ab010e4e131af261787"); //HEX

echo Base64::base64_encode($string);
echo "<br />";
echo base64_encode($string);
?>

and the output will be:

mCHCwQPwWFaqiWhQ9x0kSbdK4tgVjHEh   //  with custom mapping
MchcWqpWwfAQIwHqSX0KsBDk4TGvJheH   //  the base64_encode() 



I need help how to decode the this key