Is it advisable to nest if statements within if statements in PHP code?

It is generally not advisable to nest multiple if statements within each other in PHP code as it can make the code harder to read and maintain. Instead, it is recommended to use logical operators like && (AND) or || (OR) to combine conditions in a single if statement. This helps to streamline the code and make it more efficient.

// Example of using logical operators to combine conditions in a single if statement
if ($condition1 && $condition2) {
    // Code block to execute if both conditions are true
} elseif ($condition3 || $condition4) {
    // Code block to execute if either condition3 or condition4 is true
} else {
    // Code block to execute if none of the conditions are true
}