A shell script to install and configure PHP 8.3 with PHP-FPM, Redis, and common extensions on Alpine Linux. It ensures a www-data user/group exists, configures PHP-FPM to use a secure UNIX socket, and installs a wide range of useful PHP extensions for server environments.

alpine-php83-setup.sh

#!/bin/sh
# Alpine PHP 8.3 installation and configuration script
# Run as root

set -e

# -------------------------------
# Install PHP 8.3 + common extensions
# -------------------------------
install_php() {
    echo ">>> Installing PHP 8.3 and extensions..."

    apk add --no-cache \
        php83 php83-common php83-fpm \
        php83-cli php83-dev php83-pear \
        php83-bcmath php83-bz2 php83-calendar php83-ctype \
        php83-curl php83-dba php83-dom php83-exif php83-ffi \
        php83-fileinfo php83-ftp php83-gd php83-gettext php83-gmp \
        php83-iconv php83-imap php83-intl php83-ldap \
        php83-mbstring php83-mysqli php83-mysqlnd \
        php83-odbc php83-opcache php83-openssl php83-pcntl \
        php83-pdo php83-pdo_dblib php83-pdo_mysql php83-pdo_odbc \
        php83-pdo_pgsql php83-pdo_sqlite \
        php83-pgsql php83-phar php83-posix php83-pspell \
        php83-session php83-shmop php83-simplexml php83-snmp \
        php83-soap php83-sockets php83-sodium php83-sqlite3 \
        php83-sysvmsg php83-sysvsem php83-sysvshm php83-tidy \
        php83-tokenizer php83-xml php83-xmlreader php83-xmlwriter \
        php83-xsl php83-zip \
        php83-pecl-redis php83-pecl-apcu php83-pecl-igbinary \
        php83-pecl-msgpack php83-pecl-imagick php83-pecl-memcached \
        php83-pecl-xdebug
}

# -------------------------------
# Configure PHP-FPM
# -------------------------------
configure_php_fpm() {
    echo ">>> Configuring PHP-FPM..."

    # Enable PHP-FPM in rc
    rc-update add php-fpm83 default

    # Backup default www pool config
    cp /etc/php83/php-fpm.d/www.conf /etc/php83/php-fpm.d/www.conf.bak

    # Minimal tweaks for security and performance
    sed -i 's/^user = .*/user = nobody/' /etc/php83/php-fpm.d/www.conf
    sed -i 's/^group = .*/group = nobody/' /etc/php83/php-fpm.d/www.conf
    sed -i 's/^;listen.owner.*/listen.owner = nginx/' /etc/php83/php-fpm.d/www.conf
    sed -i 's/^;listen.group.*/listen.group = nginx/' /etc/php83/php-fpm.d/www.conf
    sed -i 's/^;listen.mode.*/listen.mode = 0660/' /etc/php83/php-fpm.d/www.conf

    # Start service
    rc-service php-fpm83 start
}

# -------------------------------
# Configure PHP defaults
# -------------------------------
configure_php_ini() {
    echo ">>> Configuring php.ini..."

    PHP_INI="/etc/php83/php.ini"
    [ -f "$PHP_INI" ] && cp "$PHP_INI" "${PHP_INI}.bak"

    sed -i 's/^memory_limit = .*/memory_limit = 512M/' $PHP_INI
    sed -i 's/^upload_max_filesize = .*/upload_max_filesize = 50M/' $PHP_INI
    sed -i 's/^post_max_size = .*/post_max_size = 50M/' $PHP_INI
    sed -i 's/^max_execution_time = .*/max_execution_time = 120/' $PHP_INI
    sed -i 's/^;date.timezone =.*/date.timezone = UTC/' $PHP_INI
}

# -------------------------------
# Main
# -------------------------------
main() {
    install_php
    configure_php_fpm
    configure_php_ini
    echo ">>> PHP 8.3 + extensions installed and configured!"
    echo ">>> PHP-FPM socket available at: /run/php-fpm.sock"
}

main "$@"