Class for realise filter by data from page

gistfile1.txt

<?php

require_once '../../../wp-load.php';
$bloginfo = get_bloginfo('template_url');

$jsonString = stripslashes($_POST['filter']);

$filterObj = new Filter($jsonString);

/*
echo '<br>Ниже фильтр по имени<br>';
var_dump($filterObj->getProjectsIdsFilteredByName($filterObj->requestName));
echo '<br>Ниже фильтр по типу проекта<br>';
var_dump($filterObj->getProjectsIdsFilteredByType($filterObj->requestType));
echo '<br>Ниже фильтр по площади<br>';
var_dump($filterObj->getProjectsIdsFilteredBySquare($filterObj->requestSquare));
echo '<br>Ниже фильтр по этажности<br>';
var_dump($filterObj->getProjectsIdsFilteredByFloors($filterObj->requestFloors));
echo '<br>Ниже фильтр по цене<br>';
var_dump($filterObj->getProjectsIdsFilteredByPrice($filterObj->requestPrice));
echo '<br><br>';
echo 'Правильный массив';
var_dump($filterObj->getFilteredPosts());
 */

$posts_array = [];

foreach ($filterObj->getFilteredPosts() as $neededPostId)
{
    $pa = get_post($neededPostId);

    $post_thumbnail = get_the_post_thumbnail_url((int) $pa->ID);
    $tmp_array = (array) $pa;
    array_push($tmp_array, $post_thumbnail);
    array_push($tmp_array, $bloginfo);
    array_push($tmp_array, get_field('pricevalue', $pa->ID));
    array_push($tmp_array, get_field('square', $pa->ID));
    array_push($tmp_array, get_field('projecttype', $pa->ID)[0]['typename']);
    $tmp_array['post_date'] = date("d.m.Y", strtotime($pa->post_date));

    $pa = $tmp_array;

    array_push($posts_array, $pa);
    /*print_r('<pre>');
    print_r($pa);
    print_r('</pre>');*/
}

echo json_encode($posts_array);

class Filter
{

    public $requestName,
            $requestType,
            $requestSquare,
            $requestFloors,
            $requestPrice;

    public function __construct($jsonString)
    {
        $jsonString = json_decode($jsonString);

        /*print_r('<pre>');
        print_r($jsonString);
        print_r('</pre>');*/

        $this->requestName = $jsonString[0];
        $this->requestType = (array) $jsonString[1];
        $this->requestSquare = $jsonString[2];
        $this->requestFloors = (array) $jsonString[3];
        $this->requestPrice = $jsonString[4];
    }

    public function getFilteredPosts()
    {
        $tmparray = [
            $this->getProjectsIdsFilteredByName($this->requestName),
            array_intersect($this->getProjectsIdsFilteredByType($this->requestType), $this->getProjectsIdsFilteredByFloors($this->requestFloors)),
            $this->getProjectsIdsFilteredBySquare($this->requestSquare),
            $this->getProjectsIdsFilteredByPrice($this->requestPrice)
        ];
        $counts = array_map('count', $tmparray);
        $min = min($counts);
        $key = array_flip($counts)[$min];
        $smallest_arr = $tmparray[$key];

        return $smallest_arr;
    }

    public function getProjectsIdsOfAllPosts()
    {
        $idsOfAllProjects = [];

        $posts_array = get_posts(['category_name' => 'completeprojects', 'post_type' => 'post', 'numberposts' => -1]);
        foreach ($posts_array as $pa)
        {
            array_push($idsOfAllProjects, $pa->ID);
        }
        return $idsOfAllProjects;
    }

    public function getProjectsIdsFilteredByName($requestName)
    {
        $projectsIdsFilteredByName = [];

        $posts_array = get_posts(['category_name' => 'completeprojects', 'post_type' => 'post', 'numberposts' => -1, 'name' => $requestName]);
        foreach ($posts_array as $pa)
        {
            array_push($projectsIdsFilteredByName, $pa->ID);
        }
        return $projectsIdsFilteredByName;
    }

    public function getProjectsIdsFilteredByType($requestType)
    {
        $projectsIdsFilteredByType = [];

        $posts_array = get_posts(['category_name' => 'completeprojects', 'numberposts' => -1, 'post_type' => 'post']);
        foreach ($requestType as $key => $valueOfRequestType)
        {
            if ($valueOfRequestType)
            {
                foreach ($posts_array as $pa)
                {
                    foreach (get_field('projecttype', $pa->ID) as $typename)
                    {
                        if ($key == $typename['typename'])
                        {
                            array_push($projectsIdsFilteredByType, $pa->ID);
                        }
                    }
                }
            }
        }
        return array_unique($projectsIdsFilteredByType);
    }

    public function getProjectsIdsFilteredBySquare($requestSquare)
    {
        $projectsIdsFilteredBySquare = [];
        $square = 0;

        $posts_array = get_posts(['category_name' => 'completeprojects', 'numberposts' => -1, 'post_type' => 'post']);

        foreach ($posts_array as $pa)
        {
            $square = (int) get_field('square', $pa->ID);
            //echo '$square = ' . $square;
            if ($square >= (int) $requestSquare[0] && $square <= (int) $requestSquare[1])
            {
                array_push($projectsIdsFilteredBySquare, $pa->ID);
            }
        }
        return array_unique($projectsIdsFilteredBySquare);
    }

    public function getProjectsIdsFilteredByFloors($requestFloors)
    {
        $projectsIdsFilteredByFloors = [];

        $posts_array = get_posts(['category_name' => 'completeprojects', 'numberposts' => -1, 'post_type' => 'post']);
        foreach ($posts_array as $pa)
        {
            foreach ($requestFloors as $key => $valueRequestFloors)
            {
                //var_dump($key.' '.$valueRequestFloors);
                if ($valueRequestFloors)
                {
                    switch (get_field('floors', $pa->ID))
                    {
                        case 1: {
                                if ($key == '1 этаж')
                                {
                                    array_push($projectsIdsFilteredByFloors, $pa->ID);
                                }
                                break;
                            }
                        case 2: {
                                if ($key == '2 этажа')
                                {
                                    array_push($projectsIdsFilteredByFloors, $pa->ID);
                                }
                                break;
                            }
                        case 3: {
                                if ($key == '3 этажа')
                                {
                                    array_push($projectsIdsFilteredByFloors, $pa->ID);
                                }
                                break;
                            }
                    }
                    if ($key == 'с мансардой' && get_field('attic', $pa->ID) == true)
                    {
                        array_push($projectsIdsFilteredByFloors, $pa->ID);
                    }
                }
            }
        }
        return array_unique($projectsIdsFilteredByFloors);
    }

    public function getProjectsIdsFilteredByPrice($requestPrice)
    {
        $projectsIdsFilteredByPrice = [];
        $price = 0;

        $posts_array = get_posts(['category_name' => 'completeprojects', 'numberposts' => -1, 'post_type' => 'post']);

        foreach ($posts_array as $pa)
        {
            $price = (int) get_field('pricevalue', $pa->ID);
            //echo '$square = ' . $square;
            if ($price >= (int) $requestPrice[0] && $price <= (int) $requestPrice[1])
            {
                array_push($projectsIdsFilteredByPrice, $pa->ID);
            }
        }
        return array_unique($projectsIdsFilteredByPrice);
    }

}