What is the error message "unexpected T_LOGICAL_OR, expecting ','" indicating in PHP code?

The error message "unexpected T_LOGICAL_OR, expecting ','" in PHP code indicates that there is a syntax error where a logical OR operator (||) was used incorrectly. To fix this issue, you need to ensure that the logical OR operator is used within the correct context, typically between two conditions or expressions.

// Incorrect usage of logical OR operator causing the error
if ($x = 5 || $y = 10) {
    // Code block
}

// Correct usage of logical OR operator
if ($x == 5 || $y == 10) {
    // Code block
}