A bash script that downloads the latest ICU release, the shivammathur intl binaries for PHP, and automates restoring them when Plesk updates PHP and reloads PHP-FPM

install-latest-icu-and-php-intl.sh

#!/bin/bash
# install-latest-icu-and-php-intl.sh
# Idempotent installer for latest ICU and PHP intl for Plesk

set -euo pipefail

# -----------------------------
# Configuration
# -----------------------------
INSTALL_PREFIX="/opt"
TMP_DIR="/tmp/icu-build"
PHP_INTL_DIR="/usr/local/php-intl"

mkdir -p "$TMP_DIR"
mkdir -p "$PHP_INTL_DIR"

# -----------------------------
# Detect latest ICU release from GitHub
# -----------------------------
echo "[INFO] Fetching latest ICU release info from GitHub..."
LATEST_TAG=$(curl -s https://api.github.com/repos/unicode-org/icu/releases/latest \
    | grep -Po '"tag_name": "\K.*?(?=")')

if [ -z "$LATEST_TAG" ]; then
    echo "[ERROR] Could not fetch latest ICU release."
    exit 1
fi

ICU_VERSION="${LATEST_TAG#release-}"
ICU_DIR="$INSTALL_PREFIX/icu-$ICU_VERSION"

echo "[INFO] Latest ICU release: $ICU_VERSION"

# -----------------------------
# Install ICU if not already present
# -----------------------------
if [ -d "$ICU_DIR" ] && [ -x "$ICU_DIR/bin/icu-config" ]; then
    echo "[INFO] ICU $ICU_VERSION already installed at $ICU_DIR. Skipping build."
else
    echo "[INFO] Installing ICU $ICU_VERSION..."
    cd "$TMP_DIR"

    SRC_TGZ="icu4c-${ICU_VERSION}-sources.tgz"
    DOWNLOAD_URL="https://github.com/unicode-org/icu/releases/download/$LATEST_TAG/$SRC_TGZ"

    wget -q --show-progress "$DOWNLOAD_URL" -O "$TMP_DIR/$SRC_TGZ"
    tar -xvf "$SRC_TGZ"
    cd icu/source

    ./configure --prefix="$ICU_DIR"
    make -j"$(nproc)"
    make -j"$(nproc)" check || echo "[WARN] ICU tests failed"
    sudo make install

    echo "[INFO] ICU installation complete: $($ICU_DIR/bin/icu-config --version)"

    # Make libraries visible system-wide
    CONF_FILE="/etc/ld.so.conf.d/icu-$ICU_VERSION.conf"
    if [ ! -f "$CONF_FILE" ]; then
        echo "$ICU_DIR/lib" | sudo tee "$CONF_FILE" >/dev/null
        sudo ldconfig
        echo "[INFO] Registered $ICU_DIR/lib via ldconfig"
    else
        echo "[INFO] ld.so.conf for ICU already exists: $CONF_FILE"
    fi

    cd /
    rm -rf "$TMP_DIR"
fi

# -----------------------------
# Detect installed Plesk PHP versions
# -----------------------------
PHP_VERSIONS=()
for PHP_BIN in /opt/plesk/php/*/bin/php; do
    if [ -x "$PHP_BIN" ]; then
        PHP_VER=$("$PHP_BIN" -r 'echo PHP_MAJOR_VERSION.".".PHP_MINOR_VERSION;')
        PHP_VERSIONS+=("$PHP_VER")
    fi
done

if [ ${#PHP_VERSIONS[@]} -eq 0 ]; then
    echo "[ERROR] No Plesk PHP versions detected under /opt/plesk/php/"
    exit 1
fi

echo "[INFO] Detected Plesk PHP versions: ${PHP_VERSIONS[*]}"

# -----------------------------
# Download shivammathur PHP intl binaries
# -----------------------------
for PHP in "${PHP_VERSIONS[@]}"; do
    TARGET_DIR="$PHP_INTL_DIR/php$PHP"
    mkdir -p "$TARGET_DIR"

    TARGET_SO="$TARGET_DIR/intl.so"
    BINARY_URL="https://github.com/shivammathur/icu-intl/releases/download/intl-$ICU_VERSION/php${PHP}-intl-$ICU_VERSION.so"

    if [ -f "$TARGET_SO" ]; then
        echo "[INFO] PHP $PHP intl.so already exists at $TARGET_SO. Skipping download."
    else
        echo "[INFO] Downloading PHP $PHP intl.so for ICU $ICU_VERSION..."
        curl -L --fail -o "$TARGET_SO" "$BINARY_URL"
        chmod 664 "$TARGET_SO"
        chown "$USER":"$USER" "$TARGET_SO"
        echo "[INFO] Saved $TARGET_SO"
    fi
done

# -----------------------------
# Create fix-plesk-intl.sh restore script
# -----------------------------
RESTORE_SCRIPT="/usr/local/bin/fix-plesk-intl.sh"

if [ ! -f "$RESTORE_SCRIPT" ]; then
    echo "[INFO] Creating restore script at $RESTORE_SCRIPT..."
    sudo tee "$RESTORE_SCRIPT" >/dev/null <<EOF
#!/bin/bash
# Restore ICU $ICU_VERSION intl.so for a specific Plesk PHP version

PHP_VERSION="\$1"
if [ -z "\$PHP_VERSION" ]; then
  echo "Usage: \$0 <PHP_VERSION>"
  exit 1
fi

ICU_BIN_DIR="$PHP_INTL_DIR"
MODULE_PATH="/opt/plesk/php/\$PHP_VERSION/lib/php/modules/intl.so"
BACKUP="\$ICU_BIN_DIR/php\$PHP_VERSION/intl.so"

if [ -f "\$BACKUP" ]; then
  if [ -f "\$MODULE_PATH" ]; then
      PLESK_SHA=\$(sha256sum "\$MODULE_PATH" | awk '{print \$1}')
  else
      PLESK_SHA=""
  fi
  BACKUP_SHA=\$(sha256sum "\$BACKUP" | awk '{print \$1}')

  if [ "\$PLESK_SHA" != "\$BACKUP_SHA" ]; then
    echo "[\$(date)] Restoring intl.so for PHP \$PHP_VERSION"
    [ -f "\$MODULE_PATH" ] && mv "\$MODULE_PATH" "\$MODULE_PATH.bak"
    cp -f "\$BACKUP" "\$MODULE_PATH"
  fi
else
  echo "[\$(date)] Backup for PHP \$PHP_VERSION not found: \$BACKUP"
fi
EOF

    sudo chmod +x "$RESTORE_SCRIPT"
    echo "[INFO] Restore script created."
else
    echo "[INFO] Restore script already exists at $RESTORE_SCRIPT. Skipping creation."
fi

# -----------------------------
# Create hook-plesk-php-intl.sh script
# -----------------------------
HOOK_SCRIPT="/usr/local/bin/hook-plesk-php-intl.sh"

if [ ! -f "$HOOK_SCRIPT" ]; then
    echo "[INFO] Creating PHP-FPM hook script at $HOOK_SCRIPT..."
    sudo tee "$HOOK_SCRIPT" >/dev/null <<'HOOK'
#!/bin/bash
# Automatically hook fix-plesk-intl.sh into all Plesk PHP-FPM services

for PHP_DIR in /opt/plesk/php/*; do
    PHP_VERSION=$(basename "$PHP_DIR")
    SERVICE="plesk-php${PHP_VERSION}-fpm"

    if systemctl list-unit-files | grep -q "$SERVICE"; then
        OVERRIDE_DIR="/etc/systemd/system/$SERVICE.service.d"
        OVERRIDE_FILE="$OVERRIDE_DIR/override.conf"

        if [ ! -f "$OVERRIDE_FILE" ]; then
            echo "[INFO] Configuring $SERVICE to run fix-plesk-intl.sh on start..."
            sudo mkdir -p "$OVERRIDE_DIR"
            sudo tee "$OVERRIDE_FILE" >/dev/null <<OVERRIDE
[Service]
ExecStartPre=/usr/local/bin/fix-plesk-intl.sh $PHP_VERSION
OVERRIDE
        else
            echo "[INFO] Override already exists for $SERVICE, skipping."
        fi
    fi
done

sudo systemctl daemon-reload
HOOK

    sudo chmod +x "$HOOK_SCRIPT"
    echo "[INFO] Hook script created."
else
    echo "[INFO] Hook script already exists at $HOOK_SCRIPT. Skipping creation."
fi

# -----------------------------
# Optionally hook all PHP-FPM services now
# -----------------------------
read -rp "Do you want to automatically hook fix-plesk-intl.sh into all Plesk PHP-FPM services now? [y/N] " answer
case "$answer" in
    [Yy]* )
        echo "[INFO] Running hook-plesk-php-intl.sh..."
        sudo /usr/local/bin/hook-plesk-php-intl.sh
        echo "[DONE] All detected PHP-FPM services now call fix-plesk-intl.sh on start."
        ;;
    * )
        echo "[INFO] Skipping automatic service hooks. You can run /usr/local/bin/hook-plesk-php-intl.sh manually later."
        ;;
esac

echo "[DONE] ICU $ICU_VERSION and PHP intl binaries are ready."