使用update_post_meta中的变量作为$meta_key

Question

查看wordpress.org上的示例

update_post_meta( $post_id，$meta_key，$meta_value，$prev_value )；

我似乎在用变量替换$meta_key时遇到了问题。这是我的密码

Part 1

设置$week

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Selected a Week

如果你回音$week，一切都好。

Part 2

$current_post   =   $post->ID;
$title          =   get_the_title();
$s1             =   $title . "s1";

$week_s1        =   "_member_score_".$week._s1";
$post_information = array(
// Look at this //
'ID'            =>  $current_post,
'post_title'    =>  $title,
'post-type'     =>  'CTP-Name',
'post_status'   =>  'publish',
);
$pidac = wp_update_post($post_information);
if($pidac)
{
update_post_meta($pidac, $week_s1, $_POST[$s1]);
$term_ids = array( 2, 7 );
$taxonomy = 'Custom-Taxonomy';
wp_set_object_terms( $pidac, $term_ids, $taxonomy );
// Redirect
wp_redirect( home_url() );
}
}

如果你回音$week_s1，一切都好

如果将变量$week_s1替换为类型化的out值"_member_score_week_1_s1“，则示例是代码works perfectly.Here。

update_post_meta($pidac, "_member_score_week_1_s1" , $_POST[$s1]);

有人能告诉我如何在这段代码中使用($week_s1 )变量吗？

Answer 1

在这一行上设置变量时出错：

$week_s1="_member_score_".$week._s1";

这一行应该是

$week_s1 ="_member_score_".$week."_s1";