What are the best practices for debugging PHP code that involves comparisons and conditional statements?

When debugging PHP code that involves comparisons and conditional statements, it is important to carefully review the logic of the conditions being used and ensure that the correct comparison operators are being used. It can be helpful to use var_dump() or echo statements to output the values of variables being compared in order to identify any unexpected behavior.

// Example code snippet for debugging comparisons and conditional statements in PHP
$var1 = 10;
$var2 = 20;

// Incorrect comparison using assignment operator
if ($var1 = $var2) {
    echo "Variables are equal";
} else {
    echo "Variables are not equal";
}

// Correct comparison using equality operator
if ($var1 == $var2) {
    echo "Variables are equal";
} else {
    echo "Variables are not equal";
}