Wordpress website တွေ အတွက် api ကို သေသပ်စွာ ပြင်ဆင်ထားပါသည်

wpApi.php

<?php
function wp()
{
    return "https://wordpresssite.com";//ကြိုက်တဲ့ wp website ကိုသုံးနိုင်ပါတယ်
}
$get = new Wp(wp());
if (isset($_GET['category'])) {
    $result = $get->byCategory(
        $_GET['category'],
        array(
            "page" => $_GET['page']
        )
    );
} elseif (isset($_GET['id'])) {
    $result = $get->single($_GET['id']);
} elseif (isset($_GET['search'])) {
    $result = $get->search($_GET['search']);
} elseif (isset($_GET['categories'])) {
    $result = $get->categories();
} else {
    $result = $get->posts(array(
        "page" => $_GET['page']
    ));
}

echo json_encode($result, TRUE);

class Wp
{
    function __construct($wpUrl)
    {
        $this->wpUrl = $wpUrl;
    }

    function index()
    {
        $w = $this->wpUrl;
        $endpoint = $w . '/wp-json';
        $query = [
            '_fields' => 'name,description', //_links,author,excerpt,link,date,
        ];
        return myFetcher($endpoint, $query);
    }
    function posts($request)
    {
        $w = $this->wpUrl;
        $page = $request['page'];
        $endpoint = $w . '/?rest_route=/wp/v2/posts';
        $query = [
            'orderby' => 'date',
            // //'offset' => $request->offset,
            // 'per_page' => $request->per_page,
            'per_page' => 5,
            'page' => is_numeric($page) && $page > 0 ? $page : 1,
            '_embed' => 'wp:featuredmedia',
            '_fields' => 'id,title,date,_links,content,excerpt' //,author,excerpt,link,//contentကိုပုံရှာဖို့လိုရေ
        ];
        $data = myFetcher($endpoint, $query);
        if (is_array($data)) {
            $array = [];
            foreach ($data as $post) {
                $array[] = $post;
            }
            return formater('thumbnail', $array);
        } else {
            return $data;
        }
    }
    function categories()
    {
        $w = $this->wpUrl;
        $endpoint = $w . '/?rest_route=/wp/v2/categories';
        $query = [
            'per_page' => 50,
            '_fields' => 'id,count,name,slug', //_links
        ];
        return myFetcher($endpoint, $query);
    }
    function byCategory($id, $request)
    {
        $w = $this->wpUrl;
        $page = $request['page'];
        $endpoint = $w . '/?rest_route=/wp/v2/posts';
        $query = [
            'categories' => $id,
            'orderby' => 'date',
            //'offset' => $request->offset,
            'per_page' => 5,
            'page' => is_numeric($page) && $page > 0 ? $page : 1,
            '_embed' => 'wp:featuredmedia',
            '_fields' => 'id,title,date,_links,content,excerpt' //_links,author,excerpt,link,date,
        ]; //re array
        $data = myFetcher($endpoint, $query);
        if (is_array($data)) {
            $array = [];
            foreach ($data as $post) {
                $array[] = $post;
            }
            return formater('thumbnail', $array);
        } else {
            return $data;
        }
    }
    function single($id)
    {
        $w = $this->wpUrl;
        $endpoint = $w . '/?rest_route=/wp/v2/posts/' . $id;
        $query = [
            '_embed' => 'wp:featuredmedia',
            '_fields' => 'id,content,title,date,_links', //_links,author,excerpt,link,date,author,link,
        ];

        $array = myFetcher($endpoint, $query);
        return formater('full', $array);
        // return myFetcher($endpoint, $query);
    }

    function search($word)
    {
        $w = $this->wpUrl;
        $page = 1;
        $endpoint = $w . '/?rest_route=/wp/v2/search';
        $query = [
            'search' => $word,
            'orderby' => 'date',
            //'per_page' => 5,
            'page' => is_numeric($page) && $page > 0 ? $page : 1,
            '_embed' => 'wp:featuredmedia',
            '_fields' => 'id,title,date' //,_links
        ];
        return myFetcher($endpoint, $query);
    }
}

////////////////////////////////////////////////////////////////////////////

function myFetcher($endpoint, $query)
{
    $query = http_build_query($query);
    $opts = array(
        'http' => array(
            'method'  => 'GET',
            'ignore_errors' => true
        ),
        "ssl" => array(
            "verify_peer" => false,
            "verify_peer_name" => false,
        )
    );

    $context = stream_context_create($opts);
    $result = @file_get_contents("{$endpoint}&{$query}", false, $context);
    return json_decode($result);

}


function formater($how, $data)
{
    switch ($how) {
        case 'thumbnail':
            $response = [];
            foreach ($data as $post) {
                $thumbnail = isset($post->_embedded->{'wp:featuredmedia'}[0]->media_details->sizes->thumbnail->source_url)
                    ? $post->_embedded->{'wp:featuredmedia'}[0]->media_details->sizes->thumbnail->source_url
                    : isset($post->_embedded)
                    ? $post->_embedded->{'wp:featuredmedia'}[0]->source_url
                    : findAPhoto($post->content->rendered);
                // $headers = @get_headers($thumbnail);
                if (strpos($thumbnail, 'http') === false && $thumbnail) {
                    $thumbnail_url = wp() . $thumbnail;
                } else {
                    $thumbnail_url = $thumbnail;
                }
                $response[] = array(
                    'id' => $post->id,
                    'date' => $post->date,
                    'title' => $post->title->rendered,
                    'thumbnail' => $thumbnail_url,
                    'excerpt' => $post->excerpt->rendered
                );
            }
            return $response;
            break;
        case 'full':
            $post = $data;
            $feature_image =
                isset($data->_embedded->{'wp:featuredmedia'}[0]->media_details->sizes->medium->source_url)
                ? $data->_embedded->{'wp:featuredmedia'}[0]->media_details->sizes->medium->source_url
                : isset($post->_embedded)
                ? $post->_embedded->{'wp:featuredmedia'}[0]->source_url
                : false;

            // $headers = @get_headers($feature_image);
            if (strpos($feature_image, 'http') === false && $feature_image) {
                $feature_image_url = wp() . $feature_image;
            } else {
                $feature_image_url = $feature_image;
            }
            $response = array(
                'id' => $post->id,
                'date' => $post->date,
                'title' => $post->title->rendered,
                'content' => $post->content->rendered,
                'feature_image' => $feature_image_url
            );
            return $response;
            break;
        default:
            # code...
            break;
    }
}

function findAPhoto($thecontent)
{
    $doc = new DOMDocument('1.0');
    libxml_use_internal_errors(true);
    $doc->loadHTML($thecontent);
    libxml_clear_errors();
    $selector = new DOMXPath($doc);

    // way 1
    if (count($selector->query("//img[@src]")) > 0) {
        $result = $selector->query("//img[@src]");
        // foreach ($result as $node) {
        //     $link = $node->getAttribute('src');
        // }
        return $result[0]->getAttribute('src');
    } else {
        return false;
    }
}