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run code in 150+ php & hhvm versions
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<?php $cat = 'cat'; echo('I love my' . $cat . 's'); echo("I love my $cat"); echo("I love my {$cat}s"); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
I love mycatsI love my catI love my cats