What common syntax error is indicated by the message "unexpected T_BOOLEAN_AND" in PHP code?

The "unexpected T_BOOLEAN_AND" error in PHP code typically occurs when the logical AND operator (&&) is incorrectly used as "AND" keyword. To fix this issue, you should replace "AND" with "&&" to represent the logical AND operator in the code.

// Incorrect usage of "AND" keyword causing syntax error
if ($condition1 AND $condition2) {
    // Code block
}

// Corrected code using the logical AND operator "&&"
if ($condition1 && $condition2) {
    // Code block
}