Sending HTML form data to webserver via PHP

Question

I'm currently working on some webform. This form is supposed to send collected data to txt file on webserver, but somehow it gives me error.

Form:

<form action="my_webserver_path_to_script.php" name="form" method="post">
    <div>
        <label for="name">Name</label>
        <input name="name" type="text" id="name" placeholder="Your Name" required/>
    </div>
    <div>
        <label for="city">City</label>
        <input name="city" type="text" id="city" placeholder="Where do you live?" required/>
    </div>
    <div>
        <label for="sex">Sex</label>
        <select name="sex" id="sex" required>
            <option value="" selected disabled hidden>Your sex</option>
            <option value="man">Man</option>
            <option value="woman">Woman</option>
        </select>
    </div>
    <div style="margin-top: 30px; text-align: center;">
        <input class="button" type="submit" value="Join Us!"/>
    </div>
</form>

Script:

<?php
    if(isset($_POST['name']) && isset($_POST['city']) && isset($_POST['sex'])) {
        $data = $_POST['name'] . '-' . $_POST['city'] . '-' . $_POST['sex'] . "\n";
        $ret = file_put_contents('my_webserver_path_to_data.txt', $data, FILE_APPEND | LOCK_EX);
        if($ret === false) {
            die('There was an error writing this file');
            }
            else {
            echo "$ret bytes written to file";
        }
    }
    else {
        die('no post data to process');
        }
?>

When i fill all the fields and click submit it jumps to php address and prints 'There was an error writing this file'.
I've already read: questions/35443812 and questions/14998961
Usually, i don't respond between 16:00 and 08:00.
Thanks in advance!

Does the data get written into your file? Also make sure your .txt file path is correct — AutoTester213
– AutoTester213, Commented Sep 15, 2017 at 12:58
This error is shown because your if condition is failing: if($ret === false) so check if the file is writable — Nadeem Khan
– Nadeem Khan, Commented Sep 15, 2017 at 13:01
Nope, the data doesn't get written into the file. Path is 100% correct. — Rahtid
– Rahtid, Commented Sep 15, 2017 at 13:01

Eduardo Estevez Nunez · Accepted Answer · 2017-09-15 13:05:02Z

2

The "file writing error" is mainly caused by an incorrect permissions setting in your hosting provider. Probably , you have to set up the 775 permission to write the file. This link could be useful for you https://unix.stackexchange.com/questions/35711/giving-php-permission-to-write-to-files-and-folders

About your PHP code. My suggestion is to improve the line #1 with the follow code:

<?php
    if ( isset( $_POST['submit'] ) ) {
    }
?>

Regards, Ed.

edited Sep 15, 2017 at 13:05

answered Sep 15, 2017 at 13:02

Eduardo Estevez Nunez

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3 Comments

Rahtid Over a year ago

I've thought about problem with permisson, but i can't check that until monday. You mean i should abbreviate whole script with the line you've sent?

ishegg Over a year ago

It is possible to send the form without all the inputs he needs. It's better to explicitly check for what he needs. You might make it a bit cleaner like this though: if(isset($_POST['name'], $_POST['city'], $_POST['sex'])) {

Rahtid Over a year ago

All of the 2 inputs, and select are necessary. I've changed the line you suggested.

Alex Hunter · Accepted Answer · 2017-09-15 13:00:29Z

0

simply type in the php $name= $_POST['name']; $city= $_POST['city']; $sex= $_POST['sex']; . If you type echo $name; you can see the data

answered Sep 15, 2017 at 13:00

Alex Hunter

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