<?php
header("Content-Type:text/html;charset=UTF-8");  
// http://127.0.0.1/js.php?f=https://go.smzdm.com/3197f398d9031d37/ca_aa_fx_163_11894949_10285_0_179_0
$url=$_GET[f];
$contents=@file_get_contents($url);
preg_match("/eval(.*?)<\/script>/is",$contents,$content);
$b=str_replace("</script>","",$content[0]);
echo "$b";  //
?>

what if you want to decrypt part of the eval code and output it? What php function should be used to decrypt it? There are many versions of html, but they don"t know how to decrypt
by php. They also refer to packer, which is encryption, and don"t know how to decrypt it. http://joliclic.free.fr/php/j.
understands the students" advice, thank you very much!