Insert Ads after X paragraph php - php

Question

Hi im try to use a class to insert adsense blocks after x numbers of paragraph etc.
its works with regular text, but dont works with adsense codes.
the full code is HERE
<?php
namespace keesiemeijer\Insert_Content;
function insert_content( $content, $insert_content = '', $args = array() ) {
$args = array_merge( get_defaults(), (array) $args );
if ( empty( $insert_content ) ) {
return $content;
}
// Validate arguments
$args['parent_element_id'] = trim( (string) $args['parent_element_id'] );
$args['insert_element'] = trim( (string) $args['insert_element'] );
$args['insert_element'] = $args['insert_element'] ? $args['insert_element'] : 'p';
$args['insert_after_p'] = abs( intval( $args['insert_after_p'] ) );
$parent_element = false;
// Content wrapped in the parent HTML element (to be inserted).
$insert_content = "<{$args['insert_element']}>{$insert_content}</{$args['insert_element']}>";
$nodes = new \DOMDocument();
// Load the HTML nodes from the content.
#$nodes->loadHTML( $content );
if ( $args['parent_element_id'] ) {
$parent_element = $nodes->getElementById( $args['parent_element_id'] );
if ( !$parent_element ) {
// Parent element not found.
return $content;
}
// Get all paragraphs from the parent element.
$p = $parent_element->getElementsByTagName( 'p' );
} else {
// Get all paragraphs from the content.
$p = $nodes->getElementsByTagName( 'p' );
}
$insert_nodes = new \DOMDocument();
#$insert_nodes->loadHTML( $insert_content );
$insert_element = $insert_nodes->getElementsByTagName( $args['insert_element'] )->item( 0 );
if ( !$insert_element ) {
return $content;
}
// Get paragraph indexes
$nodelist = get_node_indexes( $p, $args );
// Check if paragraphs are found.
if ( !empty( $nodelist ) ) {
$insert_index = get_item_index( $nodelist, $args );
if ( false === $insert_index ) {
return $content;
}
// Insert content after this (paragraph) node.
$insert_node = $p->item( $insert_index );
// Insert the nodes
insert_content_element( $nodes, $insert_node, $insert_element );
$html = get_HTML( $nodes );
if ( $html ) {
$content = $html;
}
} else {
// No paragraphs found.
if ( (bool) $args['insert_if_no_p'] ) {
if ( $parent_element ) {
// Insert content after parent element.
insert_content_element( $nodes, $parent_element, $insert_element );
$html = get_HTML( $nodes );
if ( $html ) {
$content = $html;
}
} else {
// Add insert content after the content/
$content .= $insert_content;
}
}
}
return $content;
}
/**
* Get default arguments.
*
* #return array Array with default arguments.
*/
function get_defaults() {
return array(
'parent_element_id' => '',
'insert_element' => 'p',
'insert_after_p' => '',
'insert_if_no_p' => true,
'top_level_p_only' => true,
);
}
function get_node_indexes( $nodes, $args ) {
$args = array_merge( get_defaults(), (array) $args );
$nodelist = array();
$length = isset( $nodes->length ) ? $nodes->length : 0;
$parent_id = trim( $args['parent_element_id'] );
for ( $i = 0; $i < $length; ++$i ) {
$nodelist[ $i ] = $i;
$parent = false;
$node = $nodes->item( $i );
if ( $parent_id ) {
if ( $node->parentNode->hasAttribute( 'id' ) ) {
$parent_id_attr = $node->parentNode->getAttribute( 'id' );
$parent = ( $parent_id === $parent_id_attr );
}
} else {
$parent = ( 'body' === $node->parentNode->nodeName );
}
if ( (bool) $args['top_level_p_only'] && !$parent ) {
// Remove nested paragraphs from the list.
unset( $nodelist[ $i ] );
}
}
return array_values( $nodelist );
}
function get_item_index( $nodelist, $args ) {
if ( empty( $nodelist ) ) {
return false;
}
$args = array_merge( get_defaults(), (array) $args );
$count = count( $nodelist );
$insert_index = abs( intval( $args['insert_after_p'] ) );
end( $nodelist );
$last = key( $nodelist );
reset( $nodelist );
if ( !$insert_index ) {
if ( 1 < $count ) {
// More than one paragraph found.
// Get middle position to insert the HTML.
$insert_index = $nodelist[ floor( $count / 2 ) -1 ];
} else {
// One paragraph
$insert_index = $last;
}
} else {
// start counting at 0.
--$insert_index;
--$count;
if ( $insert_index > $count ) {
if ( (bool) $args['insert_if_no_p'] ) {
// insert after last paragraph.
$insert_index = $last;
} else {
return false;
}
}
}
return $nodelist[ $insert_index ];
}
/**
* Insert an element (and it's child elements) in the content.
*
* #param object $nodes DOMNodeList instance containing all nodes.
* #param object $insert_node DOMElement object to insert nodes after
* #param object $insert DOMElement object to insert
* #return void
*/
function insert_content_element( $nodes, $insert_node, $insert_element ) {
$next_sibling = isset( $insert_node->nextSibling ) ? $insert_node->nextSibling : false;
if ( $next_sibling ) {
// get sibling element (exluding text nodes and whitespace).
$next_sibling = nextElementSibling( $insert_node );
}
if ( $next_sibling ) {
// Insert before next sibling.
$next_sibling->parentNode->insertBefore( $nodes->importNode( $insert_element, true ), $next_sibling );
} else {
// Insert as child of parent element.
$insert_node->parentNode->appendChild( $nodes->importNode( $insert_element, true ) );
}
}
function nextElementSibling( $node ) {
while ( $node && ( $node = $node->nextSibling ) ) {
if ( $node instanceof \DOMElement ) {
break;
}
}
return $node;
}
function get_HTML( $nodes ) {
$body_node = $nodes->getElementsByTagName( 'body' )->item( 0 );
if ( $body_node ) {
// Convert nodes from the body element to a string containing HTML.
$content = $nodes->saveHTML( $body_node );
// Remove first body element only.
$replace_count = 1;
return str_replace( array( '<body>', '</body>' ) , array( '', '' ), $content, $replace_count );
}
return '';
}
to call the function
$args = array(
'insert_after_p' => 3, // Insert after the second paragraph
);
echo keesiemeijer\Insert_Content\insert_content($content, $insert_content, $args );