What are best practices for handling conditional statements in PHP to prevent scripts from landing in the else section?

To prevent scripts from landing in the else section of conditional statements in PHP, it is important to thoroughly check the conditions and ensure they are accurate and comprehensive. Additionally, using elseif statements can help to create a more structured and readable code that reduces the likelihood of unintended execution paths.

// Example of using elseif statements to prevent scripts from landing in the else section

$grade = 85;

if ($grade >= 90) {
    echo "A";
} elseif ($grade >= 80) {
    echo "B";
} elseif ($grade >= 70) {
    echo "C";
} elseif ($grade >= 60) {
    echo "D";
} else {
    echo "F";
}