What are common pitfalls when using if-else statements in PHP, especially when comparing numbers?

Common pitfalls when using if-else statements in PHP, especially when comparing numbers, include not using strict comparison operators (===) which can lead to unexpected results due to type coercion. To avoid this issue, always use strict comparison operators when comparing numbers in PHP to ensure both the value and the type are being checked. 

// Incorrect comparison without strict comparison operator
$num = "5";
if ($num == 5) {
    echo "Equal";
} else {
    echo "Not equal";
}

// Correct comparison using strict comparison operator
$num = "5";
if ($num === 5) {
    echo "Equal";
} else {
    echo "Not equal";
}

Keywords

if-else comparison operators type coercion strict comparison numeric values

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