Your installer.sh is a script for installing some piece of software I take it? This installer script appears to be dependent on all of the packages it is listing that it cannot find.
Try running this series of commands:
sudo apt-get update -y && sudo apt-get upgrade -y
sudo apt-get install php5 libapache2-mod-php5 php5-mcrypt php5-gnupg php5-mysqlnd php5-gmp php5-curl php5-bcmath php5-gd
Then try running
./installer.sh again after you have verified that you have installed all the packages required and have met their dependencies.
One issue you may encounter is that your version of Debian may not have the necessary packages. This site here has a list of all the Debian "Wheezy" Packages. Search for the packages on that site to verify if they are available. You may need to add
contrib to your sources.list. If you cannot find them on any of those repos then you will need to install the aforementioned packages manually or upgrade to a newer version of Debian.
Debian 7 is reaching the end of support here soon so it is recommended you upgrade to a newer version of Debian but that is another issue separate from this. I cannot recommend installing that many packages manually as it could lead to certain issues. Best of Luck!