If you are encountering issues with missing zip extension and unzip commands in PHP, it means that the PHP installation on your server does not have support for Zip functionality. You will need to enable or install the required extensions to work with zip files in PHP. Here are the steps you can follow:

1. Enable Zip extension:
   By default, the Zip extension might be available but not enabled in your PHP configuration. You can check if the Zip extension is available but disabled by running a PHP script with phpinfo() function:

<?php
phpinfo();
?>

Save this script as phpinfo.php and run it on your server. This will display a comprehensive PHP configuration page in your browser. Look for the “zip” section and check if the Zip extension is listed and its status (enabled/disabled).

If it’s disabled, you’ll need to enable it in your php.ini file. Locate the php.ini file that your PHP installation is using (you can find its path in the “Loaded Configuration File” section in the phpinfo() output).

Open the php.ini file in a text editor and find the following line:

;extension=zip

Remove the semicolon at the beginning of the line to uncomment it:

extension=zip

Save the php.ini file and restart your web server (e.g., Apache or Nginx) for the changes to take effect.

2. Install Zip extension:
   If the Zip extension is missing altogether, you’ll need to install it using your package manager. The process may vary depending on your server’s operating system:

For Ubuntu/Debian:

sudo apt-get install php-zip

For CentOS/RHEL:

sudo yum install php-zip

For macOS with Homebrew:

brew install php-zip

After installing the Zip extension, don’t forget to restart your web server.

3. Install unzip command:
   If the unzip command is missing on your server, you’ll need to install it separately using your package manager.

For Ubuntu/Debian:

sudo apt-get install unzip

For CentOS/RHEL:

sudo yum install unzip

For macOS with Homebrew:

brew install unzip

Once you have installed unzip, you should be able to use the unzip command in PHP.

Remember, after any configuration changes or package installations, it’s essential to restart your web server to apply the changes.

After following these steps, you should have the Zip extension enabled and the unzip command available in PHP on your server. You can test the setup by running PHP code that uses Zip functions or tries to execute the unzip command.