//在文章内容的第二段后面插入广告 add_filter( 'the_content', 'prefix_insert_post_ads' ); function prefix_insert_post_ads( $content ) { //这里添加广告代码 $ad_code = "






";

 if ( is_single() && ! is_admin() ) {

 // 修改5 这个段落数

 return prefix_insert_after_paragraph( $ad_code, 5, $content );

 }

 return $content;

}   
// 插入广告所需的功能代码

function prefix_insert_after_paragraph( $insertion, $paragraph_id, $content ) {

 $closing_p = '

'; $paragraphs = explode( $closing_p, $content ); foreach ($paragraphs as $index => $paragraph) { if ( trim( $paragraph ) ) { $paragraphs[$index] .= $closing_p; } if ( $paragraph_id == $index + 1 ) { $paragraphs[$index] .= $insertion; } } return implode( '', $paragraphs ); }

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