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<?php $var = print("hello world"); var_dump($var); echo "\n"; echo $var; echo "\n"; echo print("hellow world"); echo "\n"; print("hello world"); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
hello worldint(1) 1 hellow world1 hello world