Decreasing Server's Work

When you write php script, you can write usual html script code beyond php tag to attenuate server's work when executing php code. So, this code part will be sent to browser to be showed. We can write script code like this :

if ($expression){
?>
this will be passed to browser if expression = 1
}else{
?>
this will be passed to browser if expression != 1
}
?>

Write script like this way is more effective than using echo function to send a text to browser.