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<?php $neu = htmlspecialchars("<a href='test'>Test</a>", ENT_QUOTES); echo $neu; // &lt;a href=&#039;test&#039;&gt;Test&lt;/a&gt;
Output for 4.3.2 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
&lt;a href=&#039;test&#039;&gt;Test&lt;/a&gt;
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/P5JvW on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1

Process exited with code 139.