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<?php    
/*

 * PHP QR Code encoder

 *

 * Exemplatory usage

 *

 * PHP QR Code is distributed under LGPL 3

 * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 3 of the License, or any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

 */

    

    echo "<h1>PHP QR Code</h1><hr/>";
    

    //set it to writable location, a place for temp generated PNG files

    $PNG_TEMP_DIR = dirname(__FILE__).DIRECTORY_SEPARATOR.'temp'.DIRECTORY_SEPARATOR;

    

    //html PNG location prefix

    $PNG_WEB_DIR = 'temp/';



    include "qrlib.php";    

    

    //ofcourse we need rights to create temp dir

    if (!file_exists($PNG_TEMP_DIR))

        mkdir($PNG_TEMP_DIR);
    

    

    $filename = $PNG_TEMP_DIR.'test.png';

    

    //processing form input

    //remember to sanitize user input in real-life solution !!!

    $errorCorrectionLevel = 'L';

    if (isset($_REQUEST['level']) && in_array($_REQUEST['level'], array('L','M','Q','H')))

        $errorCorrectionLevel = $_REQUEST['level'];    



    $matrixPointSize = 4;

    if (isset($_REQUEST['size']))

        $matrixPointSize = min(max((int)$_REQUEST['size'], 1), 10);




    if (isset($_REQUEST['data'])) { 

    

        //it's very important!

        if (trim($_REQUEST['data']) == '')

            die('data cannot be empty! <a href="?">back</a>');

            
        // user data

        $filename = $PNG_TEMP_DIR.'test'.md5($_REQUEST['data'].'|'.$errorCorrectionLevel.'|'.$matrixPointSize).'.png';
        QRcode::png($_REQUEST['data'], $filename, $errorCorrectionLevel, $matrixPointSize, 2);    

        
    } else {    

    

        //default data
        echo 'You can provide data in GET parameter: <a href="?data=like_that">like that</a><hr/>';    
        QRcode::png('PHP QR Code :)', $filename, $errorCorrectionLevel, $matrixPointSize, 2);    

        
    }    
        

    //display generated file
    echo '<img src="'.$PNG_WEB_DIR.basename($filename).'" /><hr/>';  

    

    //config form

    echo '<form action="index.php" method="post">

        Data:&nbsp;<input name="data" value="'.(isset($_REQUEST['data'])?htmlspecialchars($_REQUEST['data']):'PHP QR Code :)').'" />&nbsp;

        ECC:&nbsp;<select name="level">

            <option value="L"'.(($errorCorrectionLevel=='L')?' selected':'').'>L - smallest</option>

            <option value="M"'.(($errorCorrectionLevel=='M')?' selected':'').'>M</option>

            <option value="Q"'.(($errorCorrectionLevel=='Q')?' selected':'').'>Q</option>

            <option value="H"'.(($errorCorrectionLevel=='H')?' selected':'').'>H - best</option>

        </select>&nbsp;

        Size:&nbsp;<select name="size">';

        

    for($i=1;$i<=10;$i++)

        echo '<option value="'.$i.'"'.(($matrixPointSize==$i)?' selected':'').'>'.$i.'</option>';

        

    echo '</select>&nbsp;

        <input type="submit" value="GENERATE"></form><hr/>';

        

    // benchmark
    QRtools::timeBenchmark();

Zerion Mini Shell 1.0