Metrica single pageview

metrica-pageview.php

<?php

function yandex_metrica_pageview(){

	if ( ! is_single() ) {
		return false;
	}

	global $post;
	$post_slug = '/' . $post->post_name . '/';
	$metrica_options = get_option('metrica_options');

	// check options
	if ( ! is_array( $metrica_options ) || ! array_key_exists( 'counter_id', $metrica_options ) || ! array_key_exists( 'access_token', $metrica_options ) ) {
		return false;
	}

	// transient cache for prevent too many request
	$results = get_transient( 'ym_pageview_template_' . $metrica_options['counter_id'] );
	$date1 = date( 'Ymd', strtotime( '-1 year' ) );
	$date2 = date( 'Ymd' );

	if ( ! $results ) {
		$req_url = 'https://api-metrika.yandex.com/stat/v1/data.json?id='.$metrica_options['counter_id'].'&dimensions=ym:pv:URLPath&metrics=ym:pv:pageviews&filter=ym:pv:URLPathFull=='.$post_slug.'&oauth_token='.$metrica_options['access_token'].'&date1='.$date1.'&date2='.$date2;
		$response = wp_remote_get( $req_url, array( 'timeout' => 7, 'httpversion' => '1.1', 'sslverify' => false ) );
		$response_code = wp_remote_retrieve_response_code( $response );

		if ( '200' == $response_code ) {
			$body       = json_decode( $response['body'] );
			$dimensions = array();

			foreach ( (array) $body->data as $item ) {
				$dimensions[ $item->dimensions[0]->name ] = $item->metrics[0];
			}

			$pageviews = ( isset( $dimensions[ $post_slug ] ) ? $dimensions[ $post_slug ] : 0 );

			set_transient( 'ym_pageview_template_' . $metrica_options['counter_id'], $pageviews, 600 );
			return $pageviews;
		}
	}

	return false;

}