What is the issue with the code snippet provided in the forum thread regarding PHP syntax?

The issue with the code snippet provided in the forum thread is that the concatenation operator (.) is used incorrectly within the echo statement. To fix this issue, the concatenation operator should be used to concatenate the variables and strings properly.

// Incorrect code snippet
echo "Hello, " $name "!";
```

```php
// Corrected code snippet
echo "Hello, " . $name . "!";