What could be causing the "Parse error: parse error, unexpected T_STRING, expecting T_VARIABLE or '$'" error in the PHP code provided?

The "Parse error: parse error, unexpected T_STRING, expecting T_VARIABLE or '$'" error in PHP code is typically caused by a syntax error where a string is used in a context where a variable is expected. To resolve this issue, check for any misplaced strings within the code and ensure that variables are properly declared and used.

// Incorrect code causing the error
$name = "John";
echo "Hello, $name";
```

```php
// Corrected code
$name = "John";
echo "Hello, " . $name;