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POPreventing a submission from being re-submitted upon refreshing a browser
 

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    <p>The code below all works great. On a file called submit.php, a user can enter a submission through a form. The form goes to submit2.php, where some code inserts the submission into a MySQL database. So far so good.</p> <p>Here's the problem: once the user has landed on submit2.php, if the user refreshes the browser, a "Confirm Form Resubmission" pop-up box appears. Then, if the user hits "Continue" on that pop-up, the submission will be re-submitted to the MySQL database.</p> <p>How can make it do the following on submit2.php:</p> <ol> <li><p>The pop-up will not appear if the browser is refreshed.</p></li> <li><p>The submission will not be re-submitted to the database. </p></li> </ol> <p>Thanks in advance,</p> <p>John</p> <p>On submit.php:</p> <pre><code>echo '&lt;form action="http://www.domain.com/sample/submit2.php" method="post"&gt; &lt;input type="hidden" value="'.$_SESSION['loginid'].'" name="uid"&gt; &lt;div class="submissiontitle"&gt;&lt;label for="title"&gt;Story Title:&lt;/label&gt;&lt;/div&gt; &lt;div class="submissionfield"&gt;&lt;input name="title" type="title" id="title" maxlength="1000"&gt;&lt;/div&gt; &lt;div class="urltitle"&gt;&lt;label for="url"&gt;Link:&lt;/label&gt;&lt;/div&gt; &lt;div class="urlfield"&gt;&lt;input name="url" type="text" id="url" maxlength="500"&gt;&lt;/div&gt; &lt;div class="submissionbutton"&gt;&lt;input name="submit" type="submit" value="Submit"&gt;&lt;/div&gt; &lt;/form&gt; '; </code></pre> <p>On submit2.php:</p> <pre><code>if (isLoggedIn() == true) { $remove_array = array('http://www.', 'http://', 'https://', 'https://www.', 'www.'); $cleanurl = str_replace($remove_array, "", $_POST['url']); $cleanurl = strtolower($cleanurl); $cleanurl = preg_replace('/\/$/','',$cleanurl); $cleanurl = stripslashes($cleanurl); $title = $_POST['title']; $uid = $_POST['uid']; $title = mysql_real_escape_string($title); $title = stripslashes($title); $slug = str_replace(' ', '-', $title); echo '-'.$site1.'-'; $cleanurl = mysql_real_escape_string(trim($cleanurl)); $site1 = 'http://' . $cleanurl; $displayurl = parse_url($site1, PHP_URL_HOST); function isURL($url1 = NULL) { if($url1==NULL) return false; $protocol = '(http://|https://)'; $allowed = '[-a-z0-9]{1,63}'; $regex = "^". $protocol . // must include the protocol '(' . $allowed . '\.)'. // 1 or several sub domains with a max of 63 chars '[a-z]' . '{2,6}'; // followed by a TLD if(eregi($regex, $url1)==true) return true; else return false; } if(isURL($site1)==true) mysql_query("INSERT INTO submission VALUES (NULL, '$uid', '$title', '$slug', '$cleanurl', '$displayurl', NULL)"); else echo "&lt;p class=\"topicu\"&gt;Not a valid URL.&lt;/p&gt;\n"; } else { // user is not loggedin show_loginform(); } </code></pre>
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    1. COyour data preparation is terrible. doing stripslashes after mysql_real_escape_string is weird and senseless
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    2. COYeah... most of my code is pretty ugly. I'm just trying to cobble together something that works.
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