What steps can be taken to troubleshoot and debug PHP scripts that are not functioning as expected, especially when dealing with conditional logic errors?

Issue: When dealing with conditional logic errors in PHP scripts, it is important to carefully review the conditions being used and ensure they are evaluating as expected. One common mistake is using assignment operators (=) instead of comparison operators (== or ===) in conditional statements, which can lead to unintended results. Fix:

// Incorrect: using assignment operator instead of comparison operator
$number = 10;

if($number = 10) {
    echo "Number is 10";
} else {
    echo "Number is not 10";
}

// Correct: using comparison operator
$number = 10;

if($number == 10) {
    echo "Number is 10";
} else {
    echo "Number is not 10";
}