ReadingTime WP_Query Extension

reading-time-wp-query-extension.php

<?php

namespace PublicFunctionOrg/WordPress/ReadingTime;

add_filter('posts_where', function($where, $wp_query){
  $readingTime = $wp_query->get("reading_time", false);
  if(is_array($readingTime) && isset($readingTime["compare"]) && isset($readingTime["value"]) ){
    $db = new Database();
    $value = intval($readingTime["value"]);
    $compare = $readingTime["compare"]; // should be sanitized
    $postIdsQuery = "SELECT post_id FROM {$db->table} WHERE reading_time {$compare} {$value}";
    $postsTable = $db->wpdb->posts;
    $where.= " AND {$postsTable}.ID IN ( $postIdsQuery ) ";
  }
  return $where;
}, 10, 2);

$query = new \WP_Query([
  "reading_time" => [
    "compare" => ">=",
    "value" => 5,
  ],
]);