CODEWITHSUNDEEP
phphtmlforms
Edward Hammock
Edward Hammock

Reputation: 57

Simple PHP to process HTML Form

I am sure this is very simple to many of you!! I am trying to learn basic HTML / PHP form processing. The site is hosted on a local Apache server. I have had PHP working correctly and am happy that the server is working fine.

I have two files, one is settings.html, where the user has a form of 3 elements which they can enter some float values into (humidity, temperature and light tolerances). The submit button triggers a separate file called process.php which should display the three values. The code is as follows:

settings.html:

<!DOCTYPE html>
<html>
  <head>
      <meta content="text/html; charset=ISO-8859-1"  http-equiv="content-type">
    <meta http-equiv="refresh" content="179" >
    <title>Sparks - Settings</title>
    <link rel="stylesheet" type="text/css"  href="css/default.css">
  </head>
  <body>
    <div id="logo">
      <img style="width: 335px; height: 142px;" alt="ESP8266 Logo" src="images\imgESP8266.png">
    </div>
    <br>
    <form method="post" action="php/process.php">
      Humidity Tolerance : <input type="float" name="humTolerance" placeholder="Enter %" /><br />
      Temperature Tolerance : <input type="float" name="tempTolerance" placeholder="Enter %" /><br />
      Light Tolerance : <input type="float" name="lightTolerance" placeholder="Enter %" /><br />
      <input type="submit" value="Submit" />
    </form>
  </body>
<html>

php/process.php:

<?php //process.php
  if ($_SERVER["REQUEST_METHOD"] == "POST") {
      $humTolerance = $_POST["humTolerance"];
      $tempTolerance = $_POST["tempTolerance"];
      $lightTolerance = $_POST["lightTolerance"];
  }

  echo <<<_END
    <html>
      <head>
        <meta content="text/html; charset=ISO-8859-1"  http-equiv="content-type">
        <meta http-equiv="refresh" content="179" >
        <title>Sparks - Settings</title>
        <link rel="stylesheet" type="text/css"  href="css/default.css">
      </head>
      <body>
        humTolerance is: $humTolerance<br>
        tempTolerance is: $tempTolerance<br>
        lightTolerance is: $lightTolerance<br>
      </body>
    </html>
  _END;
?>

This is producing the HTTP ERROR 500 and I can't see why. Please can I have some help? Thanks.

Upvotes: 0

Views: 197

Answers (1)

Funk Forty Niner
Funk Forty Niner

Reputation: 74217

As I said in comments:

"the (first) problem is in your heredoc closing identifier it contains spaces before it."

and

"the second one: type="float" isn't a valid type for an input"

You need to replace those input types with ones that are valid.

Note that not all browsers support certain HTML5 attributes, see the above as a reference.

So use type="number" or type="text".

PHP with spaces removed before the closing heredoc identifier.

<?php //process.php
  if ($_SERVER["REQUEST_METHOD"] == "POST") {
      $humTolerance = $_POST["humTolerance"];
      $tempTolerance = $_POST["tempTolerance"];
      $lightTolerance = $_POST["lightTolerance"];
  }

  echo <<<_END
    <html>
      <head>
        <meta content="text/html; charset=ISO-8859-1"  http-equiv="content-type">
        <meta http-equiv="refresh" content="179" >
        <title>Sparks - Settings</title>
        <link rel="stylesheet" type="text/css"  href="css/default.css">
      </head>
      <body>
        humTolerance is: $humTolerance<br>
        tempTolerance is: $tempTolerance<br>
        lightTolerance is: $lightTolerance<br>
      </body>
    </html>
_END;
?>

Use PHP's error reporting also:

If you don't have access to logs, then set that to catch and display.

Upvotes: 3

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