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<?php echo filter_var('" onmouseover="alert(123)', FILTER_SANITIZE_SPECIAL_CHARS); echo '<br />'.htmlentities('" onmouseover="alert(123)');
based on c2GWJ
Output for 5.2.0 - 7.1.0
&#34; onmouseover=&#34;alert(123)<br />&quot; onmouseover=&quot;alert(123)
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/SSdf7 on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: filter_var() in /in/SSdf7 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: filter_var() in /in/SSdf7 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: filter_var() in /in/SSdf7 on line 2