3v4l.org

run code in 200+ php & hhvm versions
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<?php var_dump('' == true); var_dump(null == true); var_dump(0 == true); var_dump('http' == true);
based on ZB91k
Output for 4.3.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.2.0
bool(false) bool(false) bool(false) bool(true)