/usr/bin/env: php: No such file or directory

/usr/bin/env: php: No such file or directory

If you are getting this error, it means php is not installed or the file is corrupted.
Install it using

$ sudo apt-get install php5-cli

If you are still getting the error, Install all php packages using

$ sudo apt-get install php5
$ sudo apt-get install libapache2-mod-php5