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run code in 150+ php & hhvm versions
Bugs & Features
<?php echo htmlspecialchars('<script>alert("xss")</script>') . "\n"; echo htmlspecialchars('<script>alert("xss")</script>', ENT_QUOTES | ENT_HTML401) . "\n"; echo htmlspecialchars(htmlspecialchars('<script>alert("xss")</script>')) . "\n"; echo htmlspecialchars(htmlspecialchars('<script>alert("xss")</script>', ENT_QUOTES | ENT_HTML401)) . "\n";
based on 7S065
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
&lt;script&gt;alert(&quot;xss&quot;)&lt;/script&gt; &lt;script&gt;alert(&quot;xss&quot;)&lt;/script&gt; &amp;lt;script&amp;gt;alert(&amp;quot;xss&amp;quot;)&amp;lt;/script&amp;gt; &amp;lt;script&amp;gt;alert(&amp;quot;xss&amp;quot;)&amp;lt;/script&amp;gt;
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.2 - 5.3.29
&lt;script&gt;alert(&quot;xss&quot;)&lt;/script&gt; Notice: Use of undefined constant ENT_HTML401 - assumed 'ENT_HTML401' in /in/5eiSF on line 4 &lt;script&gt;alert(&quot;xss&quot;)&lt;/script&gt; &amp;lt;script&amp;gt;alert(&amp;quot;xss&amp;quot;)&amp;lt;/script&amp;gt; Notice: Use of undefined constant ENT_HTML401 - assumed 'ENT_HTML401' in /in/5eiSF on line 6 &amp;lt;script&amp;gt;alert(&amp;quot;xss&amp;quot;)&amp;lt;/script&amp;gt;
Output for 4.3.0 - 4.3.1
&lt;script&gt;alert(&quot;xss&quot;)&lt;/script&gt; Notice: Use of undefined constant ENT_HTML401 - assumed 'ENT_HTML401' in /in/5eiSF on line 4
Process exited with code 139.