Tags: bhmea24
Rating: 5.0
Below is the source code file (index.php) that was provided to us:
```php
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Free Flag</title>
</head>
<body>
</body>
</html>
```
In the above code, at this line:
```
if(substr(file_get_contents($file),0,5) !== "
