unpack

#!/usr/bin/env bash

VERSION="DEFAULT"
SCRIPT_DIR=`pwd`

while [[ $# -gt 1 ]]
do
key="$1"

case ${key} in
    -v|--version)
    VERSION="$2"
    shift # past argument
    ;;
esac
shift # past argument or value
done

if [ "$VERSION" == "DEFAULT" ]; then
    echo "No version specified, using version 7.1.2"
    VERSION="7.1.2"
fi

ARCHIVE="$SCRIPT_DIR/archive/php-$VERSION.tar.gz"

if [ ! -f ${ARCHIVE} ]; then
    echo "Version: $VERSION not found ... attempting to download from php.net"
    DOWNLOAD_URL="http://php.net/get/php-$VERSION.tar.gz/from/this/mirror"

    if curl --output /dev/null --silent --head --fail ${DOWNLOAD_URL}; then
        curl -Lo ${ARCHIVE} ${DOWNLOAD_URL}
    else
        echo "Version: $VERSION was not able to be downloaded from php.net. Please check version number or try to download manually. Exiting."
        exit
    fi
fi

echo "Unpacking $ARCHIVE ..."
tar -xzvf ${ARCHIVE}