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run code in 150+ php & hhvm versions
Bugs & Features
<?php $allowed = array('<p>', '<b>', '<i>', '<u>'); print_r(htmlspecialchars(implode(', ', $allowed)));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
&lt;p&gt;, &lt;b&gt;, &lt;i&gt;, &lt;u&gt;