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PHP script not displaying variables to debian web server on Kali-Linux 2023.1 vm

Hi everyone,

I recently set up a web server on my Kali Linux 2023.1 virtual machine to practice PHP scripting. However, I'm facing an issue where the variables in my PHP script are not being displayed on the web server. I have tried several troubleshooting steps but haven't been successful so far.

Here's some context to provide a better understanding:

1. Environment: I'm using Kali Linux 2023.1 as a virtual machine on my computer.
2. Goal: My goal is to run a simple PHP script on the web server, which should display the values of some variables on the webpage.
3. Server Setup: I have successfully set up Apache web server on my Kali Linux VM and confirmed that it is running fine. I can access the default Apache webpage through my local IP.
4. PHP Script: I have created a basic PHP script with some variables that I want to display on the web server. The script doesn't involve any database connections or complex logic, just basic variable assignments and echo statements.
5. Issue: When I access the PHP script through the web server, the variables are not being displayed on the webpage. I only see a blank page or the default Apache webpage.

Things I have tried so far (without success):

1. Verified PHP installation: I have confirmed that PHP is installed on my system using the `php -v` command in the terminal. The output shows the correct version of PHP.
2. File location and permissions: I have placed my PHP script in the `/var/www/html` directory, as recommended for Apache web server. The file has the proper permissions set (read and execute), and is owned by the www-data user.
3. Enabled PHP module: I have ensured that the PHP module is enabled in Apache by using the `a2enmod php` command and restarting Apache afterwards using `service apache2 restart`.
4. Error reporting: I have enabled error reporting in the PHP script by adding `error_reporting(E_ALL); ini_set('display_errors', 1);` at the top of my PHP script. However, I don't see any error messages on the webpage.
5. Confirmed syntax: I have reviewed the PHP script multiple times to check for any syntax errors or typos. It appears to be correct.

Despite these efforts, I'm still unable to see the variables displayed on the webpage. I'm not sure what I might be missing or if there is any additional configuration I need to do.

Any help or suggestions would be greatly appreciated!

Thank you in advance.

All Replies


User 2:

Hey everyone,

I encountered a similar problem while setting up a PHP script on my Debian web server. After doing some research and trying different solutions, I finally managed to get the variables to display correctly. Here's what worked for me:

1. Check PHP modules: Ensure that all the necessary PHP modules are installed and enabled on your server. Some PHP functions or features may not work if the required modules are missing. Use the `php -m` command to list the installed modules, and `phpenmod` to enable any missing modules.

2. Verify PHP.ini settings: Double-check the PHP configuration file (`php.ini`) and ensure that the `short_open_tag` directive is set to `On` or `1` to support short tags (`<? ?>`). Additionally, make sure that the `display_errors` directive is enabled to show any potential error messages.

3. PHP version compatibility: Ensure that your PHP script is compatible with the version of PHP installed on your server. Check if there are any PHP functions or features used in your script that may not be supported in your PHP version. Upgrading to a newer PHP version could potentially resolve this issue.

4. File permissions and ownership: Confirm that the PHP script file has the correct permissions and ownership. The file should be readable by the web server user (usually `www-data`), and the parent directories leading to the file should also have appropriate permissions (usually `755`).

5. Test on a different web server: Consider trying your PHP script on a different web server, such as XAMPP or WAMP, to see if the issue persists. If the variables display correctly on a different server, it could indicate a problem specific to your Debian web server configuration.

By applying these steps, I was able to resolve the problem and get my variables to display properly. Hopefully, one of these suggestions will help you overcome your issue as well.

Let me know if you need further assistance or have any additional questions. Good luck!


User 1:

Hey there,

I had a similar issue with my PHP script not displaying variables on my web server. After going through several troubleshooting steps, I found a solution that worked for me. Here's what helped:

1. Clearing the cache: Sometimes, the web browser caches the PHP script, causing it to display outdated results. Clearing the cache of the browser or trying a different browser altogether can help in such cases.

2. Check PHP error log: Take a look at the PHP error log to see if any errors are being logged. You can find the location of the error log in the php.ini file. Fixing any errors mentioned in the log might resolve the issue.

3. Double-check PHP configuration: Make sure that the PHP configuration is correctly set up. Open the php.ini file and verify that the `display_errors` option is set to `On`. Also, check if the `error_reporting` value is appropriate for your needs.

4. Enable PHP short tags: Sometimes, PHP short tags `<? ?>` are disabled in the server configuration. If you are using short tags in your script, try replacing them with the full `<?php ?>` tags to ensure compatibility.

5. Test with a simple script: To isolate the issue, create a new PHP script with a simple `echo` statement and run it on the server. If the simple script works fine, there might be a problem with the original script. Check for any syntax errors or logic mistakes in your code.

I hope one of these suggestions helps you resolve the issue. Let me know if you have any further questions or if any specific details may help us narrow down the problem.

Good luck!

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