Installation of PHP 8.1, PHP-FPM, and required extensions for Magento 2.x

php8.1_installer_for_magento2.x.sh

#!/bin/bash

# Error handling
set -e
set -o pipefail

error_exit() {
    echo "Error: $1"
    exit 1
}

echo "Starting installation of PHP 8.1, PHP-FPM, and required extensions for Magento 2.x."

echo "Updating package lists..."
sudo apt update || error_exit "Failed to update package lists."

echo "Checking for software-properties-common..."
if ! dpkg -l | grep -q software-properties-common; then
    echo "Installing software-properties-common..."
    sudo apt install -y software-properties-common || error_exit "Failed to install software-properties-common."
else
    echo "software-properties-common already installed."
fi

echo "Checking for PHP PPA repository..."
if ! grep -q "ondrej/php" /etc/apt/sources.list /etc/apt/sources.list.d/*; then
    echo "Adding PHP PPA repository..."
    sudo add-apt-repository -y ppa:ondrej/php || error_exit "Failed to add PHP PPA repository."
    sudo apt update || error_exit "Failed to update package lists after adding PHP PPA."
else
    echo "PHP PPA repository already added."
fi

echo "Checking for PHP 8.1 and PHP-FPM..."
if ! dpkg -l | grep -q php8.1; then
    echo "Installing PHP 8.1 and PHP-FPM..."
    sudo apt install -y php8.1 php8.1-fpm || error_exit "Failed to install PHP 8.1 and PHP-FPM."
else
    echo "PHP 8.1 and PHP-FPM already installed."
fi

echo "Checking availability of PHP extensions in the repository..."
extensions=(
    php8.1-bcmath
    php8.1-ctype
    php8.1-curl
    php8.1-dom
    php8.1-gd
    php8.1-iconv
    php8.1-intl
    php8.1-mbstring
    php8.1-openssl
    php8.1-pdo
    php8.1-mysql
    php8.1-simplexml
    php8.1-soap
    php8.1-xsl
    php8.1-zip
    php8.1-xml
    php8.1-phar
    php8.1-json
    php8.1-imagick
    php8.1-mcrypt
)

# Check if extensions are available in the repository
available_extensions=()
unavailable_extensions=()

for extension in "${extensions[@]}"; do
    if apt-cache search "^${extension}$" | grep -q "^${extension}"; then
        available_extensions+=("$extension")
    else
        unavailable_extensions+=("$extension")
    fi
done

if [ ${#available_extensions[@]} -eq 0 ]; then
    error_exit "No required PHP extensions are available in the repository."
else
    echo "The following PHP extensions will be installed: ${available_extensions[*]}"
    sudo apt install -y "${available_extensions[@]}" || error_exit "Failed to install PHP extensions."
fi

if [ ${#unavailable_extensions[@]} -ne 0 ]; then
    echo "The following PHP extensions are not available in the repository: ${unavailable_extensions[*]}"
fi

echo "Restarting PHP-FPM service..."
sudo systemctl restart php8.1-fpm || error_exit "Failed to restart PHP-FPM service."

echo "Enabling PHP-FPM service to start on boot..."
sudo systemctl enable php8.1-fpm || error_exit "Failed to enable PHP-FPM service."

echo "Verifying PHP installation..."
php -v || error_exit "PHP is not installed properly."

echo "Verifying PHP-FPM service status..."
sudo systemctl status php8.1-fpm || error_exit "PHP-FPM service is not running properly."

echo "PHP 8.1, PHP-FPM, and all available required extensions for Magento 2.x have been successfully installed."

read -p "Do you want to reboot the system to apply all changes? (y/n): " confirm
if [[ "$confirm" == "y" || "$confirm" == "Y" ]]; then
    echo "Rebooting the system..."
    sudo reboot
else
    echo "Installation completed. Please reboot the system manually to apply all changes."
fi