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<?php var_dump(strval('.' !== false)); var_dump(strpos('21320sfasf', '.' !== false)); var_dump(strpos('21320sfasf', strval('.' !== false)));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(1) "1" bool(false) int(1)