PHP script doesn't work when using wamp server

Question

I installed wamp server on my windows 7 machine. It shows that all the services are running. It has Apache running, PHP running and also MySQL. I have the latest Chrome browser installed.

I am trying to run the following code on the website, but I just get the basic html page without the PHP script.

Here is my code:

<html>

<head>
    <title>Php Tutorial</title>
</head>

<body>

    <h3>Php tutorials</h3>
    <hr>

    <a href="?page=home">Home</a>
    <a href="?page=tutorial">Tutorials</a>
    <a href="?page=about">About</a>
    <a href="?page=contact">Contact</a>
    <hr>

    <?php
    error_reporting(E_ALL);
    ini_set('display_errors', 1);
    echo "testing";
    print_r($_REQUEST);

    ?>

</body>

I looked around and they suggested me to install PHP, Apache and MySQL. I have all three running with phpMyAdmin using wamp server. What am I missing?

I fixed the issues with testing being regarded as not a string and added error reporting, but I still don't see testing being displayed on the webpage.

Add error reporting to the top of your file(s) right after your opening <?php tag error_reporting(E_ALL); ini_set('display_errors', 1); You have an unset constant (testing) and no $_REQUEST array to see, Enclose testin in quotes and get rid of the print_r() statement. — Jay Blanchard
– Jay Blanchard, Commented Apr 23, 2015 at 17:08
You can also add errors through the wamp menu. wamp->PHP->PHP Settings->Display Errors — James R
– James R, Commented Apr 23, 2015 at 17:12
testing is being treated as a constant. Right Sam? - @JayBlanchard — Funk Forty Niner
– Funk Forty Niner, Commented Apr 23, 2015 at 17:12
What @JayBlanchard said to use, would have triggered an Undefined constant testing notice. — Funk Forty Niner
– Funk Forty Niner, Commented Apr 23, 2015 at 17:13
as per your edit: Is your file extension in fact .php and how are you accessing it? as http://localhost/file.php or as file:///file.php? — Funk Forty Niner
– Funk Forty Niner, Commented Apr 23, 2015 at 17:23

Community · Accepted Answer · 2017-05-23 11:58:44Z

1

As per your original post - What @JayBlanchard said to use in regards to using error reporting, would have triggered an Undefined constant testing notice.

Therefore, you need to wrap the word "testing" in quotes:

echo "testing";

Add error reporting to the top of your file(s) which will help find errors.

<?php 
error_reporting(E_ALL);
ini_set('display_errors', 1);

// rest of your code

Sidenote: Error reporting should only be done in staging, and never production.

Consult the manual on strings:

https://php.net/language.types.string

and on constants:

http://php.net/manual/en/language.constants.php

If you want to use a constant all you need to do is define it:

define('testing', 'this part gets printed, not the name of the constant');

The accepted convention is to use upper case words for the name of the constant, so rather than 'testing' it would be 'TESTING'.

define('TESTING', 'this part gets printed, not the name of the constant');

Then you can use the constant:

echo TESTING; // no quotes, echos 'this part gets printed, not the name of the constant'

Edit:

as per your edit: Is your file extension in fact .php and how are you accessing it? as http://localhost/file.php or as file:///file.php?

OP: it looks like file:///C:/xy

It should be http://localhost/file.php

edited May 23, 2017 at 11:58

CommunityBot

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answered Apr 23, 2015 at 17:15

Funk Forty Niner

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8 Comments

SUB Over a year ago

Hello Fred, the issue still remains even after I added the changes you asked for. Please see the updated text.

Rizier123 Over a year ago

@SUB How does your browser url looks like: file:///C:/xy OR localhost/xy ?

Funk Forty Niner Over a year ago

@SUB I posted a comment under your question about that ^

SUB Over a year ago

it looks like file:///C:/xy

Rizier123 Over a year ago

@SUB 100pt. for me! Maybe you want to access the file from the server and not the file via the filesystem :)

|

mbeintema · Accepted Answer · 2015-04-23 17:09:06Z

1

That should read:

echo "testing";

you are missing the quotes.

answered Apr 23, 2015 at 17:09

mbeintema

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