Adwords

in-article-and-content-matching-ad.php

<?php
add_filter( 'the_content', function ( $content ) {
	if ( is_single() && get_post_type() == 'post' ) {
		$document       = new DiDom\Document( $content, false );
		$childElements  = $document->find( '.entry-content > p' );
		$maxElements    = $document->count( '.entry-content > p' ) - 1;
		if ($maxElements > 3) {
			$randomPosition = rand( 3, $maxElements - 2);
        } else {
			$randomPosition = rand( 0, $maxElements);
        }

		ob_start();
		?>
        <div class="adwords-in-article">
            <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
            <ins class="adsbygoogle"
                 style="display:block; text-align:center;"
                 data-ad-layout="in-article"
                 data-ad-format="fluid"
                 data-ad-client="ca-pub-2404521673534795"
                 data-ad-slot="1889815335"></ins>
            <script>
                (adsbygoogle = window.adsbygoogle || []).push({});
            </script>
        </div>
		<?php
		$in_article = ob_get_clean();

		$wrapper = new \DiDom\Element( 'div', '', [ 'class' => 'adwords-wrapper' ] );
		$wrapper->setInnerHtml( $in_article );
		if ( ! is_null( $childElements[ $randomPosition ] ) ) {
			$childElements[ $randomPosition ]->insertAfter( $wrapper );
		}
		if ( $document->has( '.adwords-wrapper' ) ) {
			$content = $document->html();
		}

		ob_start();
		?>
        <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
        <!-- pbad -->
        <ins class="adsbygoogle"
             style="display:block"
             data-ad-client="ca-pub-2404521673534795"
             data-ad-slot="8429380947"
             data-matched-content-ui-type="image_stacked"
             data-matched-content-rows-num="2"
             data-matched-content-columns-num="3"
             data-ad-format="autorelaxed"></ins>
        <script>
            (adsbygoogle = window.adsbygoogle || []).push({});
        </script>
		<?php
		return $content . ob_get_clean();
	}

	return $content;
}, 50 );