root/tags/phpbms-0.92/checkunique.php

<?php
/*
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 +-------------------------------------------------------------------------+
 | Copyright (c) 2004 - 2007, Kreotek LLC                                  |
 | All rights reserved.                                                    |
 +-------------------------------------------------------------------------+
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 | Redistribution and use in source and binary forms, with or without      |
 | modification, are permitted provided that the following conditions are  |
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 | - Redistributions of source code must retain the above copyright        |
 |   notice, this list of conditions and the following disclaimer.         |
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 | - Redistributions in binary form must reproduce the above copyright     |
 |   notice, this list of conditions and the following disclaimer in the   |
 |   documentation and/or other materials provided with the distribution.  |
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 | - Neither the name of Kreotek LLC nor the names of its contributore may |
 |   be used to endorse or promote products derived from this software     |
 |   without specific prior written permission.                            |
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 | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT       |
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 +-------------------------------------------------------------------------+
*/
    require ("include/session.php");

    function isUnique($tablename,$column,$value,$excludeid,$db){
        
        $thereturn=false;
        
        $querystatement="SELECT count(id) AS thecount FROM ".$tablename." WHERE ".$column."=\"".$value."\" AND id!=".$excludeid;
        $queryresult=$db->query($querystatement);
        if($queryresult){
            $therecord=$db->fetchArray($queryresult);
            if($therecord["thecount"]==0)
                $thereturn=true;
        }
        
        return $thereturn;
    }
    
    
    $isunique=false;
    
    if(isset($_GET["tdid"]) && isset($_GET["c"]) && isset($_GET["val"]) && isset($_GET["xid"])) {
        $_GET["tdid"]=((int) $_GET["tdid"]);
        $_GET["xid"]=((int) $_GET["xid"]);
        
        $querystatement="SELECT maintable FROM tabledefs WHERE id=".$_GET["tdid"];
        $queryresult=$db->query($querystatement);
        if($queryresult)
            if($therecord=$db->fetchArray($queryresult))
                $isunique=isUnique($therecord["maintable"],$_GET["c"],$_GET["val"],$_GET["xid"],$db);        
    }
    
    header('Content-Type: text/xml');
    echo '<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>';
?>
<response>
  <isunique><?php echo ((int) $isunique) ?></isunique>
</response>