how to pass number of hits count based on button action in php

Question

We are developing web sit. We have button.In button action we placed PDF file downloading.Working fine.But We need How do I count download my PDF file from my website.

We tried like this but We not get.

<?php
//$Down=$_GET['Down'];
$a="hello";
$i=0;
?>
<script type="text/javascript">
    var i=0;
    function submitForm()
    {
        <?php
        $i = @file_get_contents('count.txt'); // read the hit count from file
        echo $i; //  display the hit count
        $i++; // increment the hit count by 1
        @file_put_contents('count.txt', $i); // store the new hit count
        ?>  
    }
</script>
<html>
<head>
</head>

<body>
    <input type="button" onclick="submitForm()" value="submit 1" />
</body>
</html>

We got nothing .We are new to PHP Please guide to us.

Save you $i variable with $_SESSION; Do something like $_SESSION['count'] = $i; Don't forget to enable sessions with "session_start()" (http://php.net/manual/en/function.session-start.php) — Guilherme Ferreira, Apr 22 '15 at 14:51
@Fred-ii- we don't have database we have .txt File in server we need count will be update in .txt file — naresh koppera, Apr 22 '15 at 14:55
then Ajax would be a good candidate if you want to use JS ;-) — Funk Forty Niner, Apr 22 '15 at 14:56

Marin Bînzari · Accepted Answer · 2015-04-23T06:47:51.197

4

Well, you can download you PDF and count at form submit:

<?php
$i=0;
$i = (int) @file_get_contents('count.txt'); // read the hit count from file
if(!empty($_POST)) {
    $i++; // increment the hit count by 1
    @file_put_contents('count.txt', $i); // store the new hit count
    // Download
    $file = 'filename.pdf';
    header('Content-Description: File Transfer');
    header('Content-Type: application/pdf');
    header('Content-Disposition: attachment; filename='.basename($file));
    header('Content-Transfer-Encoding: binary');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));
}

Now use echo $i; where you want to display the number of downloads.

In html the form should be:

<form method="post" action="">
    <input type="submit" name="download" value="Download">
</form>

edited Apr 23 '15 at 06:47

answered Apr 22 '15 at 14:56

Marin Bînzari

5,208
2
26
43

`$file = 'filename.pdf'` <= missing semi-colon - *parse error* – Funk Forty Niner Apr 22 '15 at 14:57
@SpartakusMd thanks so much we need exact this but we need Display count We tried like this echo $i but it's not displayed – naresh koppera Apr 23 '15 at 06:35
@SpartakusMd thanks for update we tried like this

but it's not update button click Please guide to us .we are new to this – naresh koppera Apr 23 '15 at 07:40

score 1 · Answer 2 · edited May 23 '17 at 11:51

1

You are mixing PHP with Javascript, that won't work out at all. The best solution would be to create a PHP Script which does the counting as shown above and after that delivers the PDF as attachment.

Some examples:

How to make a PDF FIle Downloadble in HTML Link

Correct PDF Headers for File Download

edited May 23 '17 at 11:51

Community

1
1

answered Apr 22 '15 at 14:52

D. Schalla

655
4
9

how to pass number of hits count based on button action in php

2 Answers2