for creating and executing a php file from ssh you need to PHP installed as binary (CGI) and add something like at top of shell script

[root:inderweb.com]!/usr/bin/php -q

.This is to tell the shell interprator(kernal) that we are using php from bin directory for executing lines of code in script.To get started with a simple php code in shell do following steps:-

• Open shell prompt and go to your directory . e.g [root:inderweb.com ~]
• Open a php file with vi editor e.g [root:inderweb.com ~] vi phpdemo.php

#!/usr/bin/php -q
<?php
print "hello world\n";
?>
press esc and then Shift+zz for saving the file.now you will be back on prompt