Create FAQ json-ld schema from GB Pro Accordion block

accordion-faq-schema.php

<?php
function create_faq_schema($content) {
    // get the bloocks
	global $post;
	$blocks = parse_blocks( $post->post_content );

    // create arrays to store our questions
    $faq = array();
    $questions = array();

    foreach ($blocks as $block) {
        // loop through our blocks
        
        if (isset($block['attrs']['className']) && $block['blockName'] === 'generateblocks/container' && in_array('faqs-wrap', explode(' ', $block['attrs']['className']))) {
            // if the the GB Accordion Block parent container has faqs-wrap class
            // get the inner blocks of container
            $faq_blocks = $block['innerBlocks'];

            foreach ($faq_blocks as $faq_block) {
				// loop through our inner blocks

                if ($faq_block['blockName'] === 'generateblocks/container' && in_array('faq-item', explode(' ', $faq_block['attrs']['className']))) {
                    // if accordion item has a class of faq-item
                    // get the inner blocks
                    $faq_item_blocks = $faq_block['innerBlocks'];
					// prepare our $question and $answer vars
                    $question = '';
                    $answer = '';
                    foreach ($faq_item_blocks as $faq_item_block) {
                        // loop through out inner blocks
                        if ($faq_item_block['blockName'] === 'generateblocks/button' && in_array('question', explode(' ', $faq_item_block['attrs']['className']))) {
                            // if the accordion button has class of question
                            // add raw text of innerHTML to $question
                            $question = wp_strip_all_tags($faq_item_block['innerHTML']);
                        } elseif ($faq_item_block['blockName'] === 'generateblocks/container' && in_array('answer-wrap', explode(' ', $faq_item_block['attrs']['className']))) {
                            // if the accordion content has a class of answer-wrap
                            // get its inner blocks
                            $answer_blocks = $faq_item_block['innerBlocks'];
                            foreach ($answer_blocks as $answer_block) {
                                if ($answer_block['blockName'] === 'generateblocks/headline' && in_array('answer', explode(' ', $answer_block['attrs']['className']))) {
                                    // if an inner headline block has a class of answer
                                    // add raw text in innerHMTL to $answer
                                    $answer = wp_strip_all_tags($answer_block['innerHTML']);
                                }
                            }
                        }
                    }
                    // add our $question and $answer to our $questions
                    if (!empty($question) && !empty($answer)) {
                        $q = array(
                            '@type' => 'Question',
                            'name' => $question,
                            'acceptedAnswer' => array(
                                '@type' => 'Answer',
                                'text' => $answer
                            )
                        );
                        $questions[] = $q;
                    }
                }
            }
        }
    }
    // build out ld+json schema
    $faq['@context'] = 'https://schema.org';
    $faq['@type'] = 'FAQPage';
    $faq['mainEntity'] = $questions;

    $json_ld = '<script type="application/ld+json">' . json_encode($faq) . '</script>';

    echo $json_ld;
}
add_action('wp_head', 'create_faq_schema', 999 );