php script for replace func, class, and vars name to readable word

reg_vars.php

<?php

/*
 replace all fuc, vars, and class name to readable word
 credit: github.com/motebaya a.k.a mochino
 Change: 2023-03-17 19:41:39.631431600 +0700
*/

include "../vendor/autoload.php";

use PhpParser\Node;
use PhpParser\ParserFactory;
use PhpParser\NodeVisitorAbstract;
use PhpParser\NodeTraverser;

function load_word()
{
    if (file_exists('word.txt')) {
        $words = array_unique(preg_split(
            '/\r\n|\r|\n/',
            file_get_contents(
                "word.txt"
            )
        ));
        shuffle($words);
        return $words;
    } else {
        die("file: word.txt nothing!");
    }
}
function _rename($file)
{
    // rename with token_get_all: arg1 file
    $code = file_get_contents($file);
    $tokens = token_get_all($code);
    $globals = array('$GLOBALS', '$_SERVER', '$_GET', '$_POST', '$_FILES', '$_COOKIE', '$_SESSION', '$_REQUEST', '$_ENV', '$this', '__construct');
    $replace = [];
    foreach ($tokens as $key => $token) {
        if (is_array($token)) {
            switch ($token[0]) {
                case T_VARIABLE:
                    $vars = $tokens[$key][1];
                    if (!in_array($vars, $replace)) {
                        if (!in_array($vars, $globals)) {
                            $replace[] = $vars;
                        } else {
                            $names = "\$this->" . $tokens[$key + 2][1];
                            if (!in_array($names, $replace)) {
                                $replace[] = $names;
                            }
                        }
                    }
                    break;
                case T_FUNCTION:
                    $name = $tokens[$key + 2][1];
                    if (!in_array($name, $globals)) {
                        $replace[] = $name;
                    }
                    break;
                case T_CLASS:
                    $string = $tokens[$key + 2][1];
                    if (!in_array($string, $replace)) {
                        $replace[] = $string;
                    }
                    break;
            }
        }
    }
    $i = 0;
    $words = load_word();
    foreach ($replace as $rep) {
        $code = preg_replace('/' . str_replace('$', '', $rep) . '/i', $words[$i], $code);
        $i++;
    }
    print $code;
}

// replace all func, class, and vars with readable word
function _rename_regex($file, $yakpro = false)
{
    // search all with regex: arg1 file
    $random_words = load_word();
    $code = file_get_contents($file);
    // get all function name with format, 'function funcname'
    if (preg_match_all('/(?<=function\s)(.*?)(?=\()/i', $code, $func)) {
        // print_r($func);
        // die;
        $i = 0;
        $internal = get_defined_functions()['internal']; // store internal/builtin function e.g explode and other
        // get all variable name with format, '$variable '
        if (preg_match_all('/\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/i', $code, $vars)) {
            // get all class name with format, 'class classname'
            if (preg_match_all('/(?<=class\s)\w+/i', $code, $class) || [null]) {
                // merger all
                foreach (array_merge($vars[0], $func[0], $class[0]) as $rep) {
                    if ($yakpro) {
                        // yakpro just have 5 length of var, func, and class name for reduce size obfuscation
                        if (strlen($rep) == 5 && !in_array($rep, $internal)) {
                            if (!in_array($rep, $class[0])) {
                                $code = preg_replace("/{$rep}\(/i", $random_words[$i] . "(", $code);
                                $i++;
                            } else {
                                $code = preg_replace("/{$rep}/i", $random_words[$i], $code);
                                $i++;
                            }
                        } else {
                            if (strlen($rep) == 6 && $rep[0] == '$') {
                                $code = preg_replace('/\\' . $rep . '/', "\$" . $random_words[$i], $code);
                                $i++;
                            }
                        }
                    } else {
                        // print $rep . "\n";
                        if (!in_array($rep, $class[0])) {
                            if ($rep[0] != '$') {
                                if (!in_array($rep, $internal)) {
                                    $code = preg_replace("/{$rep}\(/i", $random_words[$i] . "(", $code);
                                    $i++;
                                } else {
                                    $code = preg_replace("/{$rep}/i", $random_words[$i], $code);
                                    $i++;
                                }
                            } else {
                                $code = preg_replace('/\\' . $rep . '/', "\$" . $random_words[$i], $code);
                                $i++;
                            }
                        }
                    }
                }
            }
        }
        print $code;
    } else {
        die('nothing func detected!');
    }
}

// replace all func and vars to readable word with phpparser
class get_replaced extends NodeVisitorAbstract
{
    public $result;
    public $internal;

    public function __construct()
    {
        $this->result = [];
        $this->internal = get_defined_functions()['internal'];
    }
    public function enterNode(Node $node)
    {
        // get all var, fun, method call with ast
        if ($node instanceof PhpParser\Node\Expr\FuncCall || $node instanceof PhpParser\Node\Expr\MethodCall || $node instanceof PhpParser\Node\Stmt\Function_ || $node instanceof PhpParser\Node\Stmt\CLass_ || $node instanceof PhpParser\Node\Stmt\ClassMethod) {
            $funcname = $node->name;
            if (property_exists($funcname, 'toString')) {
                $funcname = $funcname->toString();
            }
            if (!in_array($funcname, $this->internal)) {
                $this->result[] = $funcname;
            }
        }

        if ($node instanceof PhpParser\Node\Expr\Variable) {
            $varnames = $node->name;
            if (property_exists($varnames, 'name')) {
                $varnames = (string)$varnames->name;
            }
            $this->result[] = $varnames;
        }
    }
}

if (count($argv) < 3) {
    die("usage: rename <file> <mode>\ne.g: php rename.php file.php --token");
} else {
    switch ($argv[2]) {
        case '--with-token':
            _rename($argv[1]);
            break;
        case '--with-ast':
            $code = file_get_contents($argv[1]);
            $mynode = new get_replaced;
            $traverse = new NodeTraverser;
            $traverse->addVisitor($mynode);
            $traverse->traverse((new ParserFactory
            )->create(ParserFactory::PREFER_PHP7)->parse($code));

            $x = 0;
            $words = load_word();
            $replace = array_unique($mynode->result);
            foreach ($replace as $rep) {
                if ($rep != '__construct' && !in_array($rep, $mynode->internal)) {
                    $code = preg_replace('/' . $rep . '/i', $words[$x], $code);
                    $x++;
                }
            }
            print $code;
            break;
        case '--with-regex':
            _rename_regex($argv[1]);
            break;
    }
}

// print $code;
// _rename("tes_func.php");
// _rename_regex("deob_i.php");
// _rename("deob_i.php");
// _rename("tes_func.php");

get readable word: https://gist.github.com/motebaya/f0e99dd799e46a5bc2f405a44cc94df7