How to use if condition inside string in php

[CrashLL]

I want to know if there is a way to use something like this:\[code\]$t1=1;$t2=2;$t3="$t1>$t2";if($t3) echo "Greater";else echo "Smaller";\[/code\]This will evaluate to true as $t3 is a string, but that's wrong!!!So is there a way to include the if condition inside string.I heard that we can use eval for this:http://stackoverflow.com/questions/3191911/php-if-condition-inside-stringBut how is this possible???