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<?php var_dump(strip_tags('a < b')); var_dump(strip_tags('a< b')); var_dump(strip_tags('a <b'));
Output for 4.3.2 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(5) "a < b" string(4) "a< b" string(2) "a "
Output for 4.3.0 - 4.3.1
string(2) "a " string(1) "a" string(2) "a "