diff --git a/scripts/ynh_install_php b/scripts/ynh_install_php
index f2e75fe..a140e7a 100644
--- a/scripts/ynh_install_php
+++ b/scripts/ynh_install_php
@@ -17,70 +17,240 @@ export PHPENV_ROOT="$phpenv_install_dir"
 # Required dependencies
 phpenv_dependencies="autoconf2.13 autoconf2.64 autoconf bash bison build-essential ca-certificates curl findutils git libbz2-dev libcurl4-gnutls-dev libicu-dev libjpeg-dev libmcrypt-dev libonig-dev libpng-dev libreadline-dev libsqlite3-dev libssl-dev libtidy-dev libxml2-dev libxslt1-dev libzip-dev pkg-config re2c zlib1g-dev"
 
-# Load the version of PHP for an app, and set variables.
+# Create a dedicated PHP-FPM config
 #
-# ynh_use_php has to be used in any app scripts before using PHP for the first time.
-# This helper will provide alias and variables to use in your scripts.
+# usage 1: ynh_add_fpm_config [--phpversion=7.X] [--use_template] [--package=packages] [--dedicated_service]
+# | arg: -v, --phpversion=          - Version of PHP to use.
+# | arg: -t, --use_template         - Use this helper in template mode.
+# | arg: -p, --package=             - Additionnal PHP packages to install
+# | arg: -d, --dedicated_service    - Use a dedicated PHP-FPM service instead of the common one.
 #
-# To use gem or PHP, use the alias `ynh_gem` and `ynh_php`
-# Those alias will use the correct version installed for the app
-# For example: use `ynh_gem install` instead of `gem install`
+# -----------------------------------------------------------------------------
 #
-# With `sudo` or `ynh_exec_as`, use instead the fallback variables `$ynh_gem` and `$ynh_php`
-# And propagate $PATH to sudo with $ynh_php_load_path
-# Exemple: `ynh_exec_as $app $ynh_php_load_path $ynh_gem install`
+# usage 2: ynh_add_fpm_config [--phpversion=7.X] --usage=usage --footprint=footprint [--package=packages] [--dedicated_service]
+# | arg: -v, --phpversion=          - Version of PHP to use.
+# | arg: -f, --footprint=           - Memory footprint of the service (low/medium/high).
+# low    - Less than 20 MB of RAM by pool.
+# medium - Between 20 MB and 40 MB of RAM by pool.
+# high   - More than 40 MB of RAM by pool.
+# Or specify exactly the footprint, the load of the service as MB by pool instead of having a standard value.
+# To have this value, use the following command and stress the service.
+# watch -n0.5 ps -o user,cmd,%cpu,rss -u APP
 #
-# $PATH contains the path of the requested version of PHP.
-# However, $PATH is duplicated into $php_path to outlast any manipulation of $PATH
-# You can use the variable `$ynh_php_load_path` to quickly load your PHP version
-#  in $PATH for an usage into a separate script.
-# Exemple: $ynh_php_load_path $final_path/script_that_use_gem.sh`
+# | arg: -u, --usage=               - Expected usage of the service (low/medium/high).
+# low    - Personal usage, behind the SSO.
+# medium - Low usage, few people or/and publicly accessible.
+# high   - High usage, frequently visited website.
+#
+# | arg: -p, --package=             - Additionnal PHP packages to install for a specific version of PHP
+# | arg: -d, --dedicated_service    - Use a dedicated PHP-FPM service instead of the common one.
 #
 #
-# Finally, to start a PHP service with the correct version, 2 solutions
-#  Either the app is dependent of PHP or gem, but does not called it directly.
-#  In such situation, you need to load PATH
-#    `Environment="__YNH_PHP_LOAD_ENV_PATH__"`
-#    `ExecStart=__FINALPATH__/my_app`
-#     You will replace __YNH_PHP_LOAD_ENV_PATH__ with $ynh_php_load_path
-#
-#  Or PHP start the app directly, then you don't need to load the PATH variable
-#    `ExecStart=__YNH_PHP__ my_app run`
-#     You will replace __YNH_PHP__ with $ynh_php
-#
-#
-# one other variable is also available
-#   - $php_path: The absolute path to PHP binaries for the chosen version.
-#
-# usage: ynh_use_php
-#
-# Requires YunoHost version 2.7.12 or higher.
-ynh_use_php () {
-    php_version=$(ynh_app_setting_get --app=$app --key=php_version)
+ynh_add_fpm_config () {
+    # Declare an array to define the options of this helper.
+    local legacy_args=vtufpd
+    local -A args_array=( [v]=phpversion= [t]=use_template [u]=usage= [f]=footprint= [p]=package= [d]=dedicated_service )
+    local phpversion
+    local use_template
+    local usage
+    local footprint
+    local package
+    local dedicated_service
+    # Manage arguments with getopts
+    ynh_handle_getopts_args "$@"
+    package=${package:-}
 
-    # Get the absolute path of this version of PHP
-    php_path="$php_version_path/$php_version/bin"
-
-    # Allow alias to be used into bash script
-    shopt -s expand_aliases
-
-    # Create an alias for the specific version of PHP and a variable as fallback
-    ynh_php="$php_path/php"
-    alias ynh_php="$ynh_php"
-
-    ynh_fpm_conf="$php_version_path/$php_version/etc/php-fpm.d/$YNH_APP_INSTANCE_NAME.conf"
-
-    # Load the path of this version of PHP in $PATH
-    if [[ :$PATH: != *":$php_path"* ]]; then
-        PATH="$php_path:$PATH"
+    # The default behaviour is to use the template.
+    use_template="${use_template:-1}"
+    usage="${usage:-}"
+    footprint="${footprint:-}"
+    if [ -n "$usage" ] || [ -n "$footprint" ]; then
+        use_template=0
     fi
-    # Create an alias to easily load the PATH
-    ynh_php_load_path="PATH=$PATH"
+    # Do not use a dedicated service by default
+    dedicated_service=${dedicated_service:-0}
 
-    # Sets the local application-specific PHP version
-    pushd $final_path
-        phpenv local $php_version
-    popd
+    phpversion=""
+    local php_version=$(ynh_app_setting_get --app=$YNH_APP_INSTANCE_NAME --key=php_version)
+
+    if [ $dedicated_service -eq 1 ]
+    then
+        local fpm_service="${app}-phpfpm"
+        local fpm_config_dir="$php_version_path/$php_version/etc/dedicated-fpm"
+    else
+        local fpm_service="php${php_version}-fpm"
+        local fpm_config_dir="$php_version_path/$php_version/etc/php-fpm.d"
+    fi
+
+    # Create the directory for FPM pools
+    mkdir --parents "$fpm_config_dir"
+
+    ynh_app_setting_set --app=$app --key=fpm_config_dir --value="$fpm_config_dir"
+    ynh_app_setting_set --app=$app --key=fpm_service --value="$fpm_service"
+    ynh_app_setting_set --app=$app --key=fpm_dedicated_service --value="$dedicated_service"
+
+    # Migrate from mutual PHP service to dedicated one.
+    if [ $dedicated_service -eq 1 ]
+    then
+        local old_fpm_config_dir="$php_version_path/$php_version/etc/php-fpm.d"
+        # If a config file exist in the common pool, move it.
+        if [ -e "$old_fpm_config_dir/$app.conf" ]
+        then
+            ynh_print_info --message="Migrate to a dedicated php-fpm service for $app."
+            # Create a backup of the old file before migration
+            ynh_backup_if_checksum_is_different --file="$old_fpm_config_dir/$app.conf"
+            # Remove the old PHP config file
+            ynh_secure_remove --file="$old_fpm_config_dir/$app.conf"
+            # Reload PHP to release the socket and allow the dedicated service to use it
+            ynh_systemd_action --service_name=php${php_version}-fpm --action=reload
+        fi
+    fi
+
+    if [ $use_template -eq 1 ]
+    then
+        # Usage 1, use the template in conf/php-fpm.conf
+        local phpfpm_path="../conf/php-fpm.conf"
+        # Make sure now that the template indeed exists
+        [ -e "$phpfpm_path" ] || ynh_die --message="Unable to find template to configure PHP-FPM."
+    else
+        # Usage 2, generate a PHP-FPM config file with ynh_get_scalable_phpfpm
+
+        # Store settings
+        ynh_app_setting_set --app=$app --key=fpm_footprint --value=$footprint
+        ynh_app_setting_set --app=$app --key=fpm_usage --value=$usage
+
+        # Define the values to use for the configuration of PHP.
+        ynh_get_scalable_phpfpm --usage=$usage --footprint=$footprint
+
+        local phpfpm_path="../conf/php-fpm.conf"
+        echo "
+[__APP__]
+
+user = __APP__
+group = __APP__
+
+chdir = __FINALPATH__
+
+listen = /var/run/php/php__PHP_VERSION__-fpm-__APP__.sock
+listen.owner = www-data
+listen.group = www-data
+
+pm = __PHP_PM__
+pm.max_children = __PHP_MAX_CHILDREN__
+pm.max_requests = 500
+request_terminate_timeout = 1d
+" > $phpfpm_path
+
+        if [ "$php_pm" = "dynamic" ]
+        then
+            echo "
+pm.start_servers = __PHP_START_SERVERS__
+pm.min_spare_servers = __PHP_MIN_SPARE_SERVERS__
+pm.max_spare_servers = __PHP_MAX_SPARE_SERVERS__
+" >> $phpfpm_path
+
+        elif [ "$php_pm" = "ondemand" ]
+        then
+            echo "
+pm.process_idle_timeout = 10s
+" >> $phpfpm_path
+        fi
+
+        # Concatene the extra config.
+        if [ -e ../conf/extra_php-fpm.conf ]; then
+            cat ../conf/extra_php-fpm.conf >> "$phpfpm_path"
+        fi
+    fi
+
+    local finalphpconf="$fpm_config_dir/$app.conf"
+    ynh_add_config --template="$phpfpm_path" --destination="$finalphpconf"
+
+    if [ -e "../conf/php-fpm.ini" ]
+    then
+        ynh_print_warn --message="Packagers ! Please do not use a separate php ini file, merge your directives in the pool file instead."
+        ynh_add_config --template="../conf/php-fpm.ini" --destination="$fpm_config_dir/conf.d/20-$app.ini"
+    fi
+
+    if [ $dedicated_service -eq 1 ]
+    then
+        # Create a dedicated php-fpm.conf for the service
+        local globalphpconf=$fpm_config_dir/php-fpm-$app.conf
+
+echo "[global]
+pid = /run/php/php__PHP_VERSION__-fpm-__APP__.pid
+error_log = /var/log/php/fpm-php.__APP__.log
+syslog.ident = php-fpm-__APP__
+include = __FINALPHPCONF__
+" > ../conf/php-fpm-$app.conf
+
+        ynh_add_config --template="../config/php-fpm-$app.conf" --destination="$globalphpconf"
+
+        # Create a config for a dedicated PHP-FPM service for the app
+        echo "[Unit]
+Description=PHP __PHP_VERSION__ FastCGI Process Manager for __APP__
+After=network.target
+
+[Service]
+Type=notify
+PIDFile=/run/php/php__PHP_VERSION__-fpm-__APP__.pid
+ExecStart=__PHP_VERSION_PATH__/__PHP_VERSION__/sbin/php-fpm --nodaemonize --fpm-config __GLOBALPHPCONF__
+ExecReload=/bin/kill -USR2 \$MAINPID
+
+[Install]
+WantedBy=multi-user.target
+" > ../conf/$fpm_service
+
+        # Create this dedicated PHP-FPM service
+        ynh_add_systemd_config --service=$fpm_service --template=$fpm_service
+        # Integrate the service in YunoHost admin panel
+        yunohost service add $fpm_service --log /var/log/php/fpm-php.$app.log --log_type file --description "Php-fpm dedicated to $app"
+        # Configure log rotate
+        ynh_use_logrotate --logfile=/var/log/php
+        # Restart the service, as this service is either stopped or only for this app
+        ynh_systemd_action --service_name=$fpm_service --action=restart
+    else
+        # Validate that the new php conf doesn't break php-fpm entirely
+        if ! $php_version_path/$php_version/sbin/php-fpm --test 2>/dev/null
+        then
+            $php_version_path/$php_version/sbin/php-fpm --test || true
+            ynh_secure_remove --file="$finalphpconf"
+            ynh_die --message="The new configuration broke php${php_version}-fpm"
+        fi
+        ynh_systemd_action --service_name=$fpm_service --action=reload
+    fi
+}
+
+# Remove the dedicated PHP-FPM config
+#
+# usage: ynh_remove_fpm_config
+#
+# Requires YunoHost version 2.7.2 or higher.
+ynh_remove_fpm_config () {
+    local fpm_config_dir=$(ynh_app_setting_get --app=$app --key=fpm_config_dir)
+    local fpm_service=$(ynh_app_setting_get --app=$app --key=fpm_service)
+    local dedicated_service=$(ynh_app_setting_get --app=$app --key=fpm_dedicated_service)
+    dedicated_service=${dedicated_service:-0}
+    # Get the version of PHP used by this app
+    local php_version=$(ynh_app_setting_get --app=$YNH_APP_INSTANCE_NAME --key=php_version)
+
+    # Assume default PHP files if not set
+    if [ -z "$fpm_config_dir" ]
+    then
+        fpm_config_dir="$php_version_path/$php_version/etc/php-fpm.d"
+        fpm_service="php${php_version}-fpm"
+    fi
+
+    if [ $dedicated_service -eq 1 ]
+    then
+        # Remove the dedicated service PHP-FPM service for the app
+        ynh_remove_systemd_config --service=$fpm_service
+        # Remove the global PHP-FPM conf
+        ynh_secure_remove --file="$fpm_config_dir/php-fpm-$app.conf"
+        # Remove the service from the list of services known by YunoHost
+        yunohost service remove $fpm_service
+    elif ynh_package_is_installed --package="php${phpversion}-fpm"; then
+        ynh_systemd_action --service_name=$fpm_service --action=reload
+    fi
 }
 
 # Install a specific version of PHP
@@ -126,10 +296,10 @@ ynh_install_php () {
     phpenv="$(command -v phpenv $phpenv_install_dir/bin/phpenv | head -1)"
     if [ -n "$phpenv" ]; then
         ynh_print_info --message="phpenv already seems installed in \`$phpenv'."
-        pushd "${phpenv%/*}"
+        pushd "${phpenv%/*/*}"
             if git remote -v 2>/dev/null | grep -q phpenv; then
                 echo "Trying to update with git..."
-                git pull --tags origin master
+                git pull -q --tags origin master
                 cd ..
                 ynh_php_try_bash_extension
             fi
@@ -138,34 +308,73 @@ ynh_install_php () {
         ynh_print_info --message="Installing phpenv with git..."
         mkdir -p $phpenv_install_dir
         pushd $phpenv_install_dir
-            git init
-            git remote add -f -t master origin https://github.com/sptndc/phpenv.git
-            git checkout -b master origin/master
+            git init -q
+            git remote add -f -t master origin https://github.com/sptndc/phpenv.git > /dev/null 2>&1
+            git checkout -q -b master origin/master
             ynh_php_try_bash_extension
             phpenv=$phpenv_install_dir/bin/phpenv
         popd
     fi
 
     php_build="$(command -v "$phpenv_install_dir"/plugins/*/bin/phpenv-install phpenv-install | head -1)"
-
-    echo
     if [ -n "$php_build" ]; then
         ynh_print_info --message="\`phpenv install' command already available in \`$php_build'."
-        pushd "${php_build%/*}"
+        pushd "${php_build%/*/*}"
             if git remote -v 2>/dev/null | grep -q php-build; then
-                ynh_print_info --message="Trying to update with git..."
-                git pull origin master
+                ynh_print_info --message="Trying to update phpenv with git..."
+                git pull -q origin master
             fi
         popd
     else
         ynh_print_info --message="Installing php-build with git..."
         mkdir -p "${phpenv_install_dir}/plugins"
-        git clone https://github.com/php-build/php-build.git "${phpenv_install_dir}/plugins/php-build"
+        git clone -q https://github.com/php-build/php-build.git "${phpenv_install_dir}/plugins/php-build"
     fi
 
-    git clone --depth 1  "https://github.com/madumlao/phpenv-aliases.git"  "${phpenv_install_dir}/plugins/phpenv-aliases"
-    git clone --depth 1  "https://github.com/ngyuki/phpenv-composer.git"  "${phpenv_install_dir}/plugins/phpenv-composer"
-    git clone --depth 1 "https://github.com/momo-lab/xxenv-latest.git"   "${phpenv_install_dir}/plugins/xxenv-latest"
+    php_alias="$(command -v "$phpenv_install_dir"/plugins/*/bin/phpenv-alias phpenv-alias | head -1)"
+    if [ -n "$php_alias" ]; then
+        ynh_print_info --message="\`phpenv alias' command already available in \`$php_alias'."
+        pushd "${php_alias%/*/*}"
+            if git remote -v 2>/dev/null | grep -q phpenv-aliases; then
+                ynh_print_info --message="Trying to update phpenv-aliases with git..."
+                git pull -q origin master
+            fi
+        popd
+    else
+        ynh_print_info --message="Installing phpenv-aliases with git..."
+        mkdir -p "${phpenv_install_dir}/plugins"
+        git clone -q https://github.com/madumlao/phpenv-aliases.git "${phpenv_install_dir}/plugins/phpenv-aliase"
+    fi
+
+    php_composer="$(command -v "$phpenv_install_dir"/plugins/*/libexec/composer composer | head -1)"
+    if [ -n "$php_composer" ]; then
+        ynh_print_info --message="\`composer' command already available in \`$php_composer'."
+        pushd "${php_composer%/*/*}"
+            if git remote -v 2>/dev/null | grep -q phpenv-composer; then
+                ynh_print_info --message="Trying to update phpenv-composer with git..."
+                git pull -q origin master
+            fi
+        popd
+    else
+        ynh_print_info --message="Installing phpenv-composer with git..."
+        mkdir -p "${phpenv_install_dir}/plugins"
+        git clone -q https://github.com/ngyuki/phpenv-composer.git "${phpenv_install_dir}/plugins/phpenv-composer"
+    fi
+
+    php_latest="$(command -v "$phpenv_install_dir"/plugins/*/bin/phpenv-latest phpenv-latest | head -1)"
+    if [ -n "$php_latest" ]; then
+        ynh_print_info --message="\`phpenv latest' command already available in \`$php_latest'."
+        pushd "${php_latest%/*/*}"
+            if git remote -v 2>/dev/null | grep -q xxenv-latest; then
+                ynh_print_info --message="Trying to update xxenv-latest with git..."
+                git pull -q origin master
+            fi
+        popd
+    else
+        ynh_print_info --message="Installing xxenv-latest with git..."
+        mkdir -p "${phpenv_install_dir}/plugins"
+        git clone -q https://github.com/momo-lab/xxenv-latest.git "${phpenv_install_dir}/plugins/xxenv-latest"
+    fi
 
     # Enable caching
     mkdir -p "${phpenv_install_dir}/cache"
@@ -181,8 +390,8 @@ ynh_install_php () {
 
     # Install the requested version of PHP
     local final_php_version=$(phpenv latest --print $php_version)
-    ynh_print_info --message="Installation of PHP-$final_php_version"
-    phpenv install --skip-existing $final_php_version
+    ynh_print_info --message="Installing PHP$final_php_version"
+    phpenv install --skip-existing $final_php_version > /dev/null 2>&1
     ynh_replace_string --match_string="user = nobody" --replace_string="user = www-data" --target_file="$php_version_path/$final_php_version/etc/php-fpm.d/www.conf"
     ynh_replace_string --match_string="group = nobody" --replace_string="group = www-data" --target_file="$php_version_path/$final_php_version/etc/php-fpm.d/www.conf"
     ynh_replace_string --match_string="listen = 127.0.0.1:9000" --replace_string="listen = /run/php/php$final_php_version-fpm.sock" --target_file="$php_version_path/$final_php_version/etc/php-fpm.d/www.conf"
@@ -293,17 +502,68 @@ ynh_cleanup_php () {
     fi
 }
 
-
-ynh_add_fpm_config () {
+# Load the version of PHP for an app, and set variables.
+#
+# ynh_use_php has to be used in any app scripts before using PHP for the first time.
+# This helper will provide alias and variables to use in your scripts.
+#
+# To use gem or PHP, use the alias `ynh_gem` and `ynh_php`
+# Those alias will use the correct version installed for the app
+# For example: use `ynh_gem install` instead of `gem install`
+#
+# With `sudo` or `ynh_exec_as`, use instead the fallback variables `$ynh_gem` and `$ynh_php`
+# And propagate $PATH to sudo with $ynh_php_load_path
+# Exemple: `ynh_exec_as $app $ynh_php_load_path $ynh_gem install`
+#
+# $PATH contains the path of the requested version of PHP.
+# However, $PATH is duplicated into $php_path to outlast any manipulation of $PATH
+# You can use the variable `$ynh_php_load_path` to quickly load your PHP version
+#  in $PATH for an usage into a separate script.
+# Exemple: $ynh_php_load_path $final_path/script_that_use_gem.sh`
+#
+#
+# Finally, to start a PHP service with the correct version, 2 solutions
+#  Either the app is dependent of PHP or gem, but does not called it directly.
+#  In such situation, you need to load PATH
+#    `Environment="__YNH_PHP_LOAD_ENV_PATH__"`
+#    `ExecStart=__FINALPATH__/my_app`
+#     You will replace __YNH_PHP_LOAD_ENV_PATH__ with $ynh_php_load_path
+#
+#  Or PHP start the app directly, then you don't need to load the PATH variable
+#    `ExecStart=__YNH_PHP__ my_app run`
+#     You will replace __YNH_PHP__ with $ynh_php
+#
+#
+# one other variable is also available
+#   - $php_path: The absolute path to PHP binaries for the chosen version.
+#
+# usage: ynh_use_php
+#
+# Requires YunoHost version 2.7.12 or higher.
+ynh_use_php () {
     php_version=$(ynh_app_setting_get --app=$app --key=php_version)
-    ynh_use_php
-    ynh_add_config --template="../conf/php-fpm.conf" --destination="$ynh_fpm_conf"
-    systemctl reload-or-restart php$php_version-fpm
-}
 
-ynh_remove_fpm_config () {
-    php_version=$(ynh_app_setting_get --app=$app --key=php_version)
-    ynh_use_php
-    ynh_secure_remove --file="$ynh_fpm_conf"
-    systemctl reload-or-restart php$php_version-fpm
+    # Get the absolute path of this version of PHP
+    php_path="$php_version_path/$php_version/bin"
+
+    # Allow alias to be used into bash script
+    shopt -s expand_aliases
+
+    # Create an alias for the specific version of PHP and a variable as fallback
+    ynh_php="$php_path/php"
+    alias ynh_php="$ynh_php"
+
+    ynh_fpm_conf="$php_version_path/$php_version/etc/php-fpm.d/$YNH_APP_INSTANCE_NAME.conf"
+
+    # Load the path of this version of PHP in $PATH
+    if [[ :$PATH: != *":$php_path"* ]]; then
+        PATH="$php_path:$PATH"
+    fi
+    # Create an alias to easily load the PATH
+    ynh_php_load_path="PATH=$PATH"
+
+    # Sets the local application-specific PHP version
+    pushd $final_path
+        phpenv local $php_version
+    popd
 }