3v4l.org

run code in 150+ php & hhvm versions
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<?php $string = '$𝄞𝄞'; foreach ($string as $char) { var_dump(mb_strlen($char)); }
based on amdW5
Output for 4.3.0 - 4.3.10, 4.4.0 - 7.1.0
Warning: Invalid argument supplied for foreach() in /in/7EjHJ on line 5
Output for 4.3.11