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<?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";
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
&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 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 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.

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