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<?php echo htmlspecialchars(trim('<script>alert("Работает?");</script>'), ENT_QUOTES, 'UTF-8');
Output for 4.3.2 - 7.1.0
&lt;script&gt;alert(&quot;Работает?&quot;);&lt;/script&gt;
Output for 4.3.0 - 4.3.1

Process exited with code 139.