新的php标记，为什么这个标准的做法[关闭]

Question

Ok so im new to php but slowly getting to understand it. I have one question though. In these to examples below I am able to get both to work with different markup. One has { } in it and one does not. Why is this so? Can someone please explain.

With

<?php
    $guess = 7;
    $number = 7;

    if ( $guess < $number ){
    echo "Too low!";
    }elseif ($guess > $number){
    echo "Too high!";
    }else {
    echo "You win!";
    }

  ?>

With-out

<?php
    $guess = 7;
    $number = 7;

    if ( $guess < $number )
    echo "Too low!";
    elseif ($guess > $number)
    echo "Too high!";
    else 
    echo "You win!";

  ?>

Answer 1

This is not unique to PHP, it is a conditional shorthand. If you omit the { and } from an if statement then only the next line of code is considered to be inside (until ; is seen).

Personally it makes more sense to me like this:

<?php
    $guess = 7;
    $number = 7;

    if ($guess < $number) echo "Too low!";
    elseif ($guess > $number) echo "Too high!";
    else echo "You win!";
?>