How to use curl to obtain Compete statistical website information in PHP

This article mainly introduces the usage of Compete API in PHP to obtain website access statistics information. It analyzes the techniques of PHP using curl to obtain Compete statistical website information with examples. It has certain reference value. Friends who need it can refer to it

The example in this article describes the usage of Compete API in php to obtain website access statistics. The details are as follows:

Here we use php to obtain website access statistics Compete API, Compete is a website specially used to count website information

<?php
// Check for dependencies
if (!function_exists(&#39;curl_init&#39;))
 throw new Exception(&#39;Compete needs the CURL PHP extension.&#39;);
if (!function_exists(&#39;json_decode&#39;))
 throw new Exception(&#39;Compete needs the JSON PHP extension.&#39;);
/**
 * Base Compete exception class.
 */
class CompeteException extends Exception {}
/**
 * Represents Compete API.
 * @author Egor Gumenyuk (boo1ean0807 at gmail dot com)
 * @package Compete
 * @license Apache 2.0
 */
class Compete
{
 /**
  * Default usr agent.
  */
 const USER_AGENT  = &#39;Compete API wrapper for PHP&#39;;
 /**
  * Base url for api calls.
  */
 const API_BASE_URL = &#39;http://apps.compete.com/sites/:domain/trended/:metric/?apikey=:key&#39;;
 /**
  * Masks for url params.
  */
 private $_urlKeys = array(&#39;:domain&#39;, &#39;:metric&#39;, &#39;:key&#39;);
 private $_apiKey;
 /**
  * For url cleaning.
  */
 private $_toSearch = array(&#39;http://&#39;, &#39;www.&#39;);
 private $_toReplace = array(&#39;&#39;, &#39;&#39;);
 /**
  * List of available metrics.
  */
 private $_availableMetrics = array(
       // Description   Auth type
  &#39;uv&#39;,   // Unique Visitors Basic
  &#39;vis&#39;,  // Visits      Basic
  &#39;rank&#39;,  // Rank       Basic
  &#39;pv&#39;,   // Page Views    All-Access
  &#39;avgstay&#39;,// Average Stay   All-Access
  &#39;vpp&#39;,  // Visits/Person  All-Access
  &#39;ppv&#39;,  // Pages/Visit   All-Access
  &#39;att&#39;,  // Attention    All-Access
  &#39;reachd&#39;, // Daily Reach   All-Access
  &#39;attd&#39;,  // Daily Attention All-Access
  &#39;gen&#39;,  // Gender      All-Access
  &#39;age&#39;,  // Age       All-Access
  &#39;inc&#39;,  // Income      All-Access
 );
 /**
  * List of available methods for __call() implementation.
  */
 private $_metrics = array(
  &#39;uniqueVisitors&#39; => &#39;uv&#39;,
  &#39;visits&#39;     => &#39;vis&#39;,
  &#39;rank&#39;      => &#39;rank&#39;,
  &#39;pageViews&#39;   => &#39;pv&#39;,
  &#39;averageStay&#39;  => &#39;avgstay&#39;,
  &#39;visitsPerson&#39;  => &#39;vpp&#39;,
  &#39;pagesVisit&#39;   => &#39;ppv&#39;,
  &#39;attention&#39;   => &#39;att&#39;,
  &#39;dailyReach&#39;   => &#39;reachd&#39;,
  &#39;dailyAttention&#39; => &#39;attd&#39;,
  &#39;gender&#39;     => &#39;gen&#39;,
  &#39;age&#39;      => &#39;age&#39;,
  &#39;income&#39;     => &#39;inc&#39;
 );
 /**
  * Create access to Compete API.
  * @param string $apiKey user&#39;s api key.
  */
 public function __construct($apiKey) {
  $this->_apiKey = $apiKey;
 }
 /**
  * Implement specific methods.
  */
 public function __call($name, $args) {
  if (array_key_exists($name, $this->_metrics) && isset($args[0]))
   return $this->get($args[0], $this->_metrics[$name]);
  throw new CompeteException($name . &#39; method does not exist.&#39;);
 }
 /**
  * Get data from Compete.
  * @param string $site some domain.
  * @param string $metric metric to get.
  * @return stdClass Compete data.
  * @throws CompeteException
  */
 public function get($site, $metric) {
  if (!in_array($metric, $this->_availableMetrics))
   throw new CompeteException($metric . &#39; - wrong metric.&#39;);
  $values = array(
   $this->_prepareUrl($site),
   $metric,
   $this->_apiKey
  );
  // Prepare call url
  $url = str_replace($this->_urlKeys, $values, self::API_BASE_URL);
  // Retrieve data using HTTP GET method.
  $data = json_decode($this->_get($url));
  // Because of unsuccessful responses contain "status_message".
  if (!isset($data->status_message))
   return $data;
  throw new CompeteException(&#39;Status: &#39; . $data->status . &#39;. &#39; .$data->status_message);
 }
 /**
  * Cut unnecessary parts of url.
  * @param string $url some url.
  * @return string trimmed url.
  */
 private function _prepareUrl($url) {
  return str_replace($this->_toSearch, $this->_toReplace, $url);
 }
 /**
  * Execute http get method.
  * @param string $url request url.
  * @return string response.
  */
 private function _get($url) {
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_USERAGENT, self::USER_AGENT);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  return curl_exec($ch);
 }
}

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