Wordpress PHP 语法循环很奇怪

Question

我无法理解这段代码。我了解 'wordpress-loop' 的基础知识，但我不明白其中的一些语法。它几乎看起来像一个三元运算符。

        <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>

            <h1><?php the_title() ;?></h1>  
            <?php the_content(); ?>

        <?php endwhile; else: ?>

            <p>Sorry, this page does not exist</p>

        <?php endif; ?>

特别是这一行..

   <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>

它说 OK 如果有 posts，而我们有 posts，显示 post?但是 : 是什么意思。

Answer 1

控制结构PHP alternative syntax：

PHP offers an alternative syntax for some of its control structures; namely, if, while, for, foreach, and switch. In each case, the basic form of the alternate syntax is to change the opening brace to a colon (:) and the closing brace to endif;, endwhile;, endfor;, endforeach;, or endswitch;, respectively.

示例：

if (condition) : 

endif;

等同于：

if (condition) {

}

具体来说，WordPress 说：如果我们有 posts，遍历每个 post，并得到 post.

这里有一个缩进版本要清楚：

    <?php if ( have_posts() ) : ?>
        <?php while ( have_posts() ) : ?>
            <?php the_post(); ?>

            <h1><?php the_title() ;?></h1>  
            <?php the_content(); ?>

        <?php endwhile; ?>
    <?php else: ?>

        <p>Sorry, this page does not exist</p>

    <?php endif; ?>

Answer 2

http://php.net/manual/en/control-structures.alternative-syntax.php

PHP offers an alternative syntax for some of its control structures; namely, if, while, for, foreach, and switch. In each case, the basic form of the alternate syntax is to change the opening brace to a colon (:) and the closing brace to endif;, endwhile;, endfor;, endforeach;, or endswitch;, respectively.

Wordpress PHP 语法循环很奇怪

Wordpress PHP Syntax Loop is strange

php

wordpress