Question

您好我是PHP的新手，我在循环中将一个类添加到一组三个项目时遇到问题。所以基本上我需要项目1-3在循环中没有类，项目4-6有类，项目7-9没有类，项目10-12没有类等等。我知道我需要添加一个计数器，但我不知道如何编写if语句。

感谢任何帮助。提前谢谢！

抱歉，这是代码的示例

global $wp_query;
$wp_query = new WP_Query( $args );
if( $wp_query->have_posts() ):
while( $wp_query->have_posts() ): $wp_query->the_post(); global $post; 

    echo '<article class="recipe">
        <div class="recipe-img"><a href="'.get_permalink().'">'.get_the_post_thumbnail( $id, 'featured').'</a></div>
        <div class="recipe-info">
            <span>'.get_the_date().'</span> | <span>'.get_the_author().'</span>
            <a href="'.get_permalink().'">
                <h3 class="lato">'.get_the_title().'</h3>
            </a>
        </div>
    </article>';

}
endwhile;
    genesis_posts_nav();
endif;

我能够做到这一点，但它只将课程添加到每三个项目。

$args = array(
            'post_type' => 'recipes',
            'orderby' => 'date',
            'order' => 'DESC',
            'posts_per_page'=> '3',
            'paged' => get_query_var( 'paged' ),
        );
            global $wp_query;
            $wp_query = new WP_Query( $args );
            if( $wp_query->have_posts() ):
            $count = 0;
            while( $wp_query->have_posts() ): $wp_query->the_post(); global $post; 
            $count++;
            if ($count % 3 == 0 ) {

            echo '<article class="recipe third">
                <div class="recipe-img"><a href="'.get_permalink().'">'.get_the_post_thumbnail( $id, 'featured').'</a></div>
                <div class="recipe-info">
                    <span>'.get_the_date().'</span> | <span>'.get_the_author().'</span>
                    <a href="'.get_permalink().'">
                        <h3 class="lato">'.get_the_title().'</h3>
                    </a>
                </div>
            </article>';

            } else {

            echo '<article class="recipe">
                <div class="recipe-img"><a href="'.get_permalink().'">'.get_the_post_thumbnail( $id, 'featured').'</a></div>
                <div class="recipe-info">
                    <span>'.get_the_date().'</span> | <span>'.get_the_author().'</span>
                    <a href="'.get_permalink().'">
                        <h3 class="lato">'.get_the_title().'</h3>
                    </a>
                </div>
            </article>';

            }
            endwhile;
            genesis_posts_nav();
        endif;

Answer 1

只需在计数器中添加一些额外的控件，然后稍微更改一下if语句：

...
while( $wp_query->have_posts() ): $wp_query->the_post(); global $post;
    $count = $count > 6 ? 1 : $count + 1;
    if (($count > 3) && ($count <= 6) ) {
        echo(...);
...

Answer 2

<html>
<head>
    <title>Counter Colors</title>
<style type="text/css">
    span{display: inline-block;padding: 10px;border:solid 1px #ccc;}
    .green{color: green;}
</style>
</head>
<body>
<?php 
//phpinfo();

$class = 'class="green"';
$put_class = 1;

for ($i=1; $i <= 12 ; $i++) { 


    if($put_class == 1){
        echo '<span '.$class.'>'.$i.'</span>';
    } else{
        echo '<span>'.$i.'</span>';
    }

    if($i%3 == 0){
        if($put_class == 0){$put_class = 1;}
        else{$put_class = 0;}
    }

}
?>
</body>
</html>

如何在循环php中为某些项添加类？

2 个答案: