3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $var = 'foo'; $string = 'this is a string with $var'; echo $string; echo "\n"; $var2 = 'foo'; $string2 = "this is a string with $var"; echo $string2;
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
this is a string with $var this is a string with foo