What are the different data types in PHP? PHP में अलग-अलग डेटा टाइप्स कौन से हैं?

Short Answer

The switch statement is a control structure used as a cleaner alternative to a long series of if...elseif...else blocks. It compares a single variable against multiple possible values (cases) and executes the corresponding block of code.

Detailed Explanation & Code Example

Each condition in a switch block is called a case. When a case matches the variable, PHP executes the code inside that case until it hits a break statement.

$role = "editor";

switch ($role) {
    case "admin":
        echo "You have full access.";
        break;
    case "editor":
        echo "You can publish posts.";
        break;
    case "subscriber":
        echo "You can read posts.";
        break;
    default:
        // The default block runs if no cases matched
        echo "Please log in.";
}
// Output: You can publish posts.

Common Mistakes: The "Fall-Through" Bug

If you forget to include the break; statement at the end of a case, PHP will execute the matched case and all subsequent cases until it hits a break or the switch ends. This is called "falling through."

// BAD CODE: Missing break statements
$number = 1;
switch ($number) {
    case 1:
        echo "One ";
    case 2:
        echo "Two ";
}
// Output: One Two