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<?php $cat = 'cat'; echo('I love my ' . $cat . 's' . PHP_EOL); echo("I love my $cat \n"); echo("I love my {$cat}s \n"); ?>
Output for 4.3.10 - 4.4.9, 5.0.2 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
I love my cats I love my cat I love my cats
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/645OO on line 3 I love my catsPHP_EOLI love my cat I love my cats