Adding String To Integer?

Create a PHP program with the followingrequirements Create a program that does the following: creates a variable called “test” (remember the dollar sign) stores the number 35 to test and prints the result adds 10.0000 to test and prints the result subtracts 5.123123 from test and prints it out stores the character string “happy to be here” to test andprints adds 10.0000 to the variable test (try to guess what willhappen)whats the solution to this problem? any help would be appreciated.

<?php$test = 35;Print $test;$test += 10.0000;Print $test;$test -= 5.123123;Print $test;$test = "happy to be here";Print $test;$test += 10.0000;?>