PHP-使用条件开关切换case语句

Question

Can i put conditional statement within switch statement. ex - switch ($totaltime<=13) Other than php how about other languages compatibility with it?

$totaltime=15;

switch ($totaltime<=13) {

case ($totaltime <= 1):
echo "That was fast!";
break;

case ($totaltime <= 5):
echo "Not fast!";
break;

case ($totaltime >= 10 && $totaltime<=15):
echo "That's slooooow";
break;
}

Edit

$totaltime=12; 
switch (false) { 
case ($totaltime <= 1): 
echo "That was fast!"; 
break; 
case ($totaltime <= 5): 
echo "Not fast!";
break;
case ($totaltime >= 10 && $totaltime<=13): 
echo "That's slooooow"; 
break; 
default: // do nothing break; 
} 

Gentleman in this case why alwyas show output as "That was fast!"?

Answer 1

Switch only checks if the first condition is equal to the second, this way:

switch (CONDITION) {
    case CONDITION2:
        echo "CONDITION is equal to CONDITION2";
    break;
}

So you have to do it this way:

switch (true) {
    case $totaltime <= 1: #This checks if true (first condition) is equal to $totaltime <= 1 (second condition), so if $totaltime is <= 1 (true), is the same as checking true == true.
        echo "That was fast!";
    break;

    case $totaltime <= 5:
        echo "Not fast!";
    break;

    case $totaltime >= 10 && $totaltime<=13:
        echo "That's slooooow";
    break;
}

Instead of this i'll go for if-elseif statements. Is easier to understand at first sight:

if ($totaltime <= 1) {
    echo "That was fast!";
} elseif($totaltime <= 5) {
    echo "Not fast!";
} elseif($totaltime >= 10 && $totaltime<=13) {
    echo "That's slooooow";
}