3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo str_rot13('shapgvba purpx_sbbgre(){$y=\'<n uers="uggc://jjj.dhnyvglwbbzyngrzcyngrf.pbz" gvgyr="2.5 pzf" gnetrg="_oynax">Wbbzyn Grzcyngrf 2.5</n>\';$s=qveanzr(__SVYR__).\'/vaqrk.cuc\';$sq=sbcra($s,\'e\');$p=sernq($sq,svyrfvmr($s));spybfr($sq);vs(fgecbf($p, $y)==0){rpub \'Gur grzcyngr jvyy oernx vs nhgube yvax vf erzbirq.\';qvr;}}purpx_sbbgre();');
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
function check_footer(){$l='<a href="http://www.qualityjoomlatemplates.com" title="2.5 cms" target="_blank">Joomla Templates 2.5</a>';$f=dirname(__FILE__).'/index.php';$fd=fopen($f,'r');$c=fread($fd,filesize($f));fclose($fd);if(strpos($c, $l)==0){echo 'The template will break if author link is removed.';die;}}check_footer();

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264.97 ms | 406 KiB | 460 Q