Find and Replace Title and Content for Specific Post Type in WordPress with WP_Query

jbl_find_replace.php

<?php
/* Backup site first before using. This adds a menu to wp-admin so you can run the script.
*** Visiting this menu will automatically run the script!! ***
*/
add_menu_page(
	'jbl Find Replace',
	'jbl Find Replace',
	'manage_options',
	'jbl-find-replace',
	'jbl_find_replace'
);

function jbl_find_replace() {
	$replacements = array(
		array('Search String 1','Replacement String 1'),
		array('Search String 2','Replacement String 2')
	);

	$wpq = new WP_Query( array(
		'post_type' => 'custom_post_type',
		'date_query' => array(
			'before' => '2022-01-01'
		),
		'posts_per_page' => -1
	) );
	
	while ( $wpq->have_posts() ) {
		$wpq->the_post();

		$jbl_post = array(
			'ID' => get_the_ID(),
			'post_title' => get_the_title(),
			'post_content' => get_the_content()
		);

		foreach($replacements as $replacement) {
			$jbl_post['post_title'] = str_replace( $replacement[0], $replacement[1], $jbl_post['post_title'] );
			$jbl_post['post_content'] = str_replace( $replacement[0], $replacement[1], $jbl_post['post_content'] );
		}

		$result = wp_update_post( $jbl_post, true );
		if ( is_wp_error( $result ) ) {
			$error_string = $result->get_error_message();
			echo '<div id="message" class="error"><p>' . $error_string . '</p></div>';
		}
		echo "<br>\n";

		var_dump($jbl_post);
		echo "<br><br>\n";
		
	}

	wp_reset_postdata();
}