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Get the value from the drop-down list. (a little difficult)

First of all, im completely new to PHP and coding, but here it goes.

I have a web form that should get some information from a txt file (located in a folder on the server) I got how to get it to get information from a file and how to make a drop-down list, show all the files in the folder. Be that as it may, I cannot figure out how to make them work together, so the name of the file from which it is read is taken from the selected value of the drop-down list.

code for dropdown:

<? $currentdir = 'files'; //change to your directory $dir = opendir($currentdir); echo 'Files are as follows:<br>'; echo '<select name="select">'; while($file = readdir($dir)) { echo '<option value="'.$file.'">'.$file.'</option>'; } echo '</select>'; closedir($dir); ?>

and code to read from a file:

 <input type="text" value="<?php $myFile = ""; $lines = file($myFile); echo $lines[2]; ?>" name="refnr" id="refnr" class="input" />

lets say that 2 files are shown in the drop-down list, test.txt and test2.txt, if I select test2.txt from the drop-down list, I wanted it to put "test2.txt" between "" on <?php $myFile = "" ; but no matter how I try to put the code there to get the selected value, it just fails ...

The full code of my form, as of now:

 <?php if (!empty($_POST)) { // Used for later to determine result $success = $error = false; // Object syntax looks better and is easier to use than arrays to me $post = new stdClass; // Usually there would be much more validation and filtering, but this // will work for now. foreach ($_POST as $key => $val) $post->$key = trim(strip_tags($_POST[$key])); // Check for blank fields if (empty($post->refnr)) $error = true; else { // Get this directory, to include other files from $dir = dirname(__FILE__); // Get the contents of the pdf into a variable for later ob_start(); require_once($dir.'/pdf.php'); $pdf_html = ob_get_contents(); ob_end_clean(); // Load the dompdf files require_once($dir.'/dompdf/dompdf_config.inc.php'); $dompdf = new DOMPDF(); // Create new instance of dompdf $dompdf->load_html($pdf_html); // Load the html $dompdf->render(); // Parse the html, convert to PDF $pdf_content = $dompdf->output(); // Put contents of pdf into variable for later // Get the contents of the HTML email into a variable for later ob_start(); require_once($dir.'/html.php'); $html_message = ob_get_contents(); ob_end_clean(); // Load the SwiftMailer files require_once($dir.'/swift/swift_required.php'); $mailer = new Swift_Mailer(new Swift_MailTransport()); // Create new instance of SwiftMailer $message = Swift_Message::newInstance() ->setSubject('Felanmalan') // Message subject ->setTo(array(' mymail@hidden ' => 'Fel')) // Array of people to send to ->setFrom(array(' mymail@hidden ' => 'Fel')) // From: ->setBody($html_message, 'text/html') // Attach that HTML message from earlier ->attach(Swift_Attachment::newInstance($pdf_content, 'Felanmalan.pdf', 'application/pdf')); // Attach the generated PDF from earlier // Send the email, and show user message if ($mailer->send($message)) $success = true; else $error = true; } } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>Felanm&auml;lan fr&aring;n IKEA</title> <style type="text/css"> html, body, h1, h2, h3, h4, h5, h6, p, span, ul, li, div, form, input, select, textarea, button {margin:0; padding:0;} ul {list-style:none;} a, a:hover {text-decoration:none; outline:0;} a img {border:0;} body {font:12px/16px Verdana, Arial, sans-serif; background:#ffffff;} #container {width:450px; margin:10px auto; padding:10px; overflow:hidden; border:1px solid #000; border-radius:10px; -moz-border-radius:10px; -webkit-border-radius:10px; background:#F9F9F9;} #container h1 {margin-bottom:20px; font-size:40px; line-height:40px; font-family:'HelveticaNeue-Light', 'Helvetica Neue', Helvetica, Arial, sans-serif; font-weight:normal;} .message {margin-bottom:10px; padding:5px;} .success {color:#4F8A10; border:1px solid #4F8A10; background:#DFF2BF;} .error {color:#D8000C; border:1px solid #D8000C; background:#FFBABA;} label {display:block; margin-bottom:3px; cursor:pointer;} .input, textarea, select, button {display:block; width:440px; margin-bottom:10px; padding:3px; font:22px/22px 'HelveticaNeue-Light', 'Helvetica Neue', Helvetica, Arial, sans-serif; border:1px solid #CCC; border-top-width:2px;} textarea {font-size:13px; line-height:16px;} select {width:396px;} button {float:right; width:auto; margin-bottom:0; padding:3px 30px; cursor:pointer; font-size:16px; border:1px solid #999; border-bottom-width:2px; border-radius:5px; -moz-border-radius:5px; -webkit-border-radius:5px; background:#EEE;} button:active {border-bottom-width:1px; padding:4px 30px 3px; background:#E9E9E9;} </style> </head> <body> <? $currentdir = 'files'; //change to your directory $dir = opendir($currentdir); echo 'Files are as follows:<br>'; echo '<select name="select">'; while($file = readdir($dir)) { echo '<option value="'.$file.'">'.$file.'</option>'; } echo '</select>'; closedir($dir); ?> <div id="container"> <h1><img src="felimg.png" /> Felanm&auml;lan</h1> <?php if ($success) { ?> <div class="message success"> <h4>Congratulations! It worked! Now check your email.</h4> </div> <?php } elseif ($error) { ?> <div class="message error"> <h4>Sorry, an error occurred. Try again!</h4> </div> <?php } ?> <form method="post" action=""> <label for="date"><b>Date:</b></label> <input type="text" readonly name="date" id="date" class="input" value="<? print(Date("Ymd")); ?>"/> <label for="refnr"><b>Referensnummer:</b></label> <input type="text" value="<?php $myFile = ""; $lines = file($myFile); echo $lines[2]; ?>" name="refnr" id="refnr" class="input" /> <label for="bestav"><b>Best&auml;lld av:</b></label> <input type="text" name="bestav" id="bestav" class="input" /> <label for="tel"><b>Tel:</b></label> <input type="text" name="tel" id="tel" class="input" /> <label for="email"><b>Email:</b></label> <input type="text" name="email" id="email" class="input" /> <label for="kund"><b>Kund:</b></label> <textarea name="kund" id="kund" rows="4" cols="40"></textarea> <label for="ktel"><b>Tel:</b></label> <input type="text" name="ktel" id="ktel" class="input" /> <label for="art"><b>Ber&ouml;rd Artikel:</b></label> <textarea name="art" id="art" rows="3" cols="40"></textarea> <label for="fel"><b>Fel p&aring; varan: </b></label> <textarea name="fel" id="fel" rows="2" cols="40"></textarea> <label for="q1"><b>Installation gjord av fackman:</b></label> <select name="q1" id="q1"> <option value="Ja">Ja</option> <option value="Nej">Nej</option> </select> <label for="q2"><b>Serviceverkstad:</b></label> <input type="text" name="q2" id="q2" class="input" /> <label for="q3"><b>Servicenr:</b></label> <input type="text" name="q3" id="q3" class="input" /> <label for="q4"><b>Serienr:</b></label> <input type="text" name="q4" id="q4" class="input" /> <label for="q5"><b>Inom garanti eller reklamation:</b></label> <select name="q5" id="q5"> <option value="Garanti">Garanti</option> <option value="Reklamation">Reklamation</option> </select> <label for="q6"><b>Informerat om punkt 8:</b></label> <select name="q6" id="q6"> <option value="Ja">Ja</option> <option value="Nej">Nej</option> </select> <label for="q7"><b>Har kund sj&auml;lv g&aring;tt igenom manual f&ouml;r fels&ouml;kning:</b></label> <select name="q7" id="q7"> <option value="Ja">Ja</option> <option value="Nej">Nej</option> </select> <label for="q8"><b>Ordernr:</b></label> <input type="text" name="q8" id="q8" class="input" /> <label for="q9"><b>Ink&ouml;psdatum:</b></label> <input type="date" name="q9" id="q9" class="input" /><br> <p><button type="submit">Submit!</button></p> </form> </div> </body> </html>

Hope this makes sense and again, sorry if that would be a question about the noob :) I used 2 days of searching and testing, and I just went to the point where I need to push a little in the right direction.

Thanks in advance.

ps, to explain what my goal is, then I have 1 web form that generates a txt file and saves it on the server, and then another form where the “administrator” can select the file from the drop-down list, get the information that the client fills in the txt version, and then fills in what it needs to fill out, and then save and send to PDF as a specialist.

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3 answers

you can use

 echo '<select id="select" name="select">'; while($file = readdir($dir)) { echo '<option value="'.$file.'">'.$file.'</option>'; } echo '</select>';

And after it has been loaded into the DOM, use

 document.getElementById('select').onchange=changeSelect; function changeSelect(){ document.getElementById('refnr').value=document.getElementById('select').value; } changeSelect();

See here: http://jsfiddle.net/7nzBS/

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 I wanted it to put "test2.txt" in between the "" at `<?php $myFile = ""`

You cannot do anything, because "text2.txt" is on the client side, and the variable $myfile , php is on the server side. If you want to access client-side data from the server side, you need to send data via HTTP. So you have two options:

  • Send the selected value via HTTP message or receive .
  • Send the selected value via AJAX .
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Thanks, Oriol, that worked :)

the code now looks like this and works the way I need it. Also thanks for all the other suggestions, great with quick and helpful answers :)

  <label for="refnr"><b>Referensnummer:</b></label> <input type="text" value="<?php $selectedfile = @$_POST['file2']; $myFile = "files/$selectedfile"; $lines = file($myFile); echo $lines[0]; ?>" name="refnr" id="refnr" class="input" />
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