What does "unexpected T_String" mean in PHP?

The "unexpected T_String" error in PHP typically occurs when there is a syntax error in the code, such as missing quotes or semicolons. To solve this issue, carefully review the code where the error is reported and check for any missing or misplaced characters. Make sure all strings are enclosed in quotes and all statements are properly terminated with semicolons.

// Incorrect code causing "unexpected T_String" error
echo "Hello World'
```

```php
// Corrected code with quotes properly closed
echo "Hello World";