Hello: I have a code here to output the quarter in the current time. My question is , what is the syntax: $min=substr($time,3,2); $sec=substr($time,6,2); Could

Hello:

I have a code here to output the quarter in the current time.

//variables

$min;

$sec;

//setting timezone for getting time

date_default_timezone_set('America/Chicago');

$time = date('H:i:s'); //H= hour(using 24 hours), i=min , s=sec

$min=substr($time,3,2);

$sec=substr($time,6,2);

echo "Time-".$time;

echo "
Minute: ".$min;

echo "
Second: ".$sec;

if(($min>=00)&&($min<=14)){

if($sec<=59)

echo"

We are in First Quarter of Hours";

}

elseif(($min>=15)&&($min<=29)){

if($sec<=59)

echo"

We are in Second Quarter of Hours";

}

elseif(($min>=30)&&($min<=44)){

if($sec<=59)

echo"

We are in Third Quarter of Hours";

}

else{

if($sec<=59)

echo"

We are in Fourth Quarter of Hours";

}

?>

My question is , what is the syntax: $min=substr($time,3,2);

$sec=substr($time,6,2);

Could you please explain to me? ( we are not allowed to use any MYSqual function)

Thank you!