<?php
function evalJS($code)
{
$matches = [];
preg_match_all('#var (.*)( |=|;)#', $code, $matches);
foreach($matches[1] as $val)
{
$code = preg_replace('#'.$val.'#', '\$'.$val, $code);
$code = preg_replace('#var \$'.$val.'#', '\$'.$val, $code);
$code = preg_replace('#\$'.$val.'\.#', '\$'.$val.'->', $code);
}
$code = preg_replace('#\.#', '::', $code);
$code = preg_replace('#(\'|")\+#', '$1.', $code);
$code = preg_replace('#\+(\'|")#', '.$1', $code);
echo($code);
var_dump($matches);
}
class document
{
public function print($arg)
{
echo($arg);
}
}
$js = <<<JS
var foo = "Hello "+"World!";
document.print(foo);
JS;
evalJS($js);
- Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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 - 8.3.4, 8.3.6
- var foo = "Hello "."World!";
document::print(foo);array(3) {
[0]=>
array(1) {
[0]=>
string(28) "var foo = "Hello "+"World!";"
}
[1]=>
array(1) {
[0]=>
string(23) "foo = "Hello "+"World!""
}
[2]=>
array(1) {
[0]=>
string(1) ";"
}
}
- Output for 8.3.5
- Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
var foo = "Hello "."World!";
document::print(foo);array(3) {
[0]=>
array(1) {
[0]=>
string(28) "var foo = "Hello "+"World!";"
}
[1]=>
array(1) {
[0]=>
string(23) "foo = "Hello "+"World!""
}
[2]=>
array(1) {
[0]=>
string(1) ";"
}
}
- Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
- Parse error: syntax error, unexpected 'print' (T_PRINT), expecting identifier (T_STRING) in /in/gtcU6 on line 20
Process exited with code 255.
preferences:
217.57 ms | 402 KiB | 293 Q