PHP switch statement returns invalid output

Question

The PHP switch statement returns invalid output :

$cond = "Night";

switch($cond){
    case "Morning":
    case "Night":
        $name = "Good";

    case "Morning" :
        echo $name." Morning";
        break;

    case "Night" :
        echo $name." Night";
        break;
}

Output: Good Morning

Expected: Good Night

Can someone help me with this?

Answer 1

Referred from the doc:

It is important to understand how the switch statement is executed in order to avoid mistakes. The switch statement executes line by line (actually, statement by statement). In the beginning, no code is executed. Only when a case statement is found with a value that matches the value of the switch expression does PHP begin to execute the statements. PHP continues to execute the statements until the end of the switch block, or the first time it sees a break statement. If you don't write a break statement at the end of a case's statement list, PHP will go on executing the statements of the following case.

The switch construct is a double-edged sword unless you specify a break. PHP does not verify case conditions any more once it has started executing statements inside a case. Without a break, it will just continue with the statements of the next cases without verifying the case conditions.

For example: 

The following code:

switch (1) {
case 1:
    echo "one ";
case 2:
    echo "two ";
case "hello":
    echo "hello ";
}

Will output:

one two hello

PHP finds the first case condition to be true and starts executing statements without evaluating any other case conditions.

I hope this helps you.