export.php

<?php
/* The MIT License (MIT)
 *
 * Copyright (c) 2015 Oliver Bachmann, Karlsruhe, Germany
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
$create_default=false; // When this is set to true, the export creates a default.txt file which can get converted to test.ans by calling create_default.php 
function getRandomString($length = 10) {
    $validCharacters = "abcdefghijklmnopqrstuxyvwzABCDEFGHIJKLMNOPQRSTUXYVWZ0123456789";
    $validCharNumber = strlen($validCharacters);
 
    $result = "";
 
    for ($i = 0; $i < $length; $i++) {
        $index = mt_rand(0, $validCharNumber - 1);
        $result .= $validCharacters[$index];
    }
 
    return $result;
}


if (!is_dir("download")) {
    mkdir("download");
}

$string=$_POST['value'];

$filename=getRandomString(8);

if ($create_default) 
{
    $f=fopen("default.txt", "w");
    fwrite($f,$string);
    fclose($f);
    exit;
}

$f=fopen("download/".$filename.".ans", "w");


include("subs.php");


echo json_encode(array("filename" => $filename.".ans"));






?>