What is the significance of the error message "Parse error: parse error, unexpected '=' in PHP code?

The error message "Parse error: parse error, unexpected '=' in PHP code" typically occurs when there is a syntax error in the code, often caused by using the assignment operator '=' in a context where it is not allowed. To solve this issue, you need to review the line of code where the error is reported and ensure that the '=' operator is used correctly within the context.

// Incorrect code causing parse error
$variable = 10;
if ($variable = 10) {
    echo "Variable is equal to 10";
}

// Corrected code
$variable = 10;
if ($variable == 10) {
    echo "Variable is equal to 10";
}