What is the significance of the error message "unexpected T_INCLUDE" in PHP scripts?

The error message "unexpected T_INCLUDE" in PHP scripts indicates that there is a syntax error related to the include or require statement in the code. This error typically occurs when there is a missing semicolon (;) or a misplaced parenthesis or curly brace. To solve this issue, carefully review the code surrounding the include statement and ensure that it is properly formatted.

// Incorrect code with unexpected T_INCLUDE error
include 'header.php'
echo "Hello World";

// Corrected code with proper syntax
include 'header.php';
echo "Hello World";