Add custom content after WordPress article paragraphs

If you want to add custom content after a WordPress article paragraph, such as an advertisement after the second paragraph of the article, you can try the following code:

Add custom content after WordPress article paragraphs

 //Insert content after the second paragraph of the article add_filter( 'the_content', 'prefix_insert_post_ads' ); function prefix_insert_post_ads( $content ) { $ad_code='<div>added text</div>'; if ( is_single() && !  is_admin() ) { return prefix_insert_after_paragraph( $ad_code, 2, $content ); } return $content; } //Main function function prefix_insert_after_paragraph( $insertion, $paragraph_id, $content ) { $closing_p = '</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 ); }

Add different contents after paragraphs 2, 4 and 6 respectively

 add_filter( 'the_content', 'add_ads_to_content' ); function add_ads_to_content( $content ) { $ads = array( 2 =>  'ad code 1', // paragraph_id => ad_code 4 => 'ad code 2', // paragraph_id => ad_code 6 => 'ad code 3' // paragraph_id => ad_code ); if ( is_single() && !  is_admin() ) { foreach ($ads as $paragraph_id => $ad_code) { $content = prefix_insert_after_paragraph( $ad_code, $paragraph_id, $content ); } } return $content; } function prefix_insert_after_paragraph( $insertion, $paragraph_id, $content ) { $closing_p = '</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 ); }

If it is only displayed and added in a classified article, you can also write this

 add_filter( 'the_content', 'prefix_insert_post_ads' ); function prefix_insert_post_ads( $content ) { $ad_code='<div>custom text</div>'; if ( is_single() && !  is_admin() && in_category('29') ) { return prefix_insert_after_paragraph( $ad_code, $content ); } return $content; } function prefix_insert_after_paragraph( $insertion, $content ) { $closing_p = '</p>'; $paragraphs = explode( $closing_p, $content ); $paragraph_id = round(count($paragraphs) / 2); foreach ($paragraphs as $index => $paragraph) { if ( trim( $paragraph ) ) { $paragraphs[$index] .= $ closing_p; } if ( $paragraph_id == $index + 1 ) { $paragraphs[$index] .= $ insertion; } } return implode( '', $paragraphs ); }