PHP如何自動識別第三方Restful API的內容，自動渲染成 json、xml、html、serialize、csv、php等資料

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如題，PHP如何自動識別第三方Restful API的內容，自動渲染成 json、xml、html、serialize、csv、php等資料？

其實這也不難，因為Rest API也是基於http協議的，只要我們按照協議走，就能做到自動化識別 API 的內容，方法如下：

1、API服務端要返回明確的 http Content-Type頭資訊，如

Content-Type: application/json; charset=utf-8

Content-Type: application/xml; charset=utf-8

Content-Type: text/html; charset=utf-8

2、PHP端（用戶端）接收到上述頭資訊後，再酌情自動化處理，參考代碼如下：

<?php// 請求初始化$url = ‘http://blog.snsgou.com/user/123456‘;$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);// 返回的 http body 內容$response = curl_exec($ch);// 返回的 http header 的 Content-Type 的內容$contentType = curl_getinfo($ch, ‘content_type‘);// 關閉請求資源curl_close($ch);// 結果自動格式輸出$autoDetectFormats = array(‘application/xml‘=> ‘xml‘,‘text/xml‘=> ‘xml‘,‘application/json‘=> ‘json‘,‘text/json‘=> ‘json‘,‘text/csv‘=> ‘csv‘,‘application/csv‘=> ‘csv‘,‘application/vnd.php.serialized‘ => ‘serialize‘);if (strpos($contentType, ‘;‘)){list($contentType) = explode(‘;‘, $contentType);}$contentType = trim($contentType);if (array_key_exists($contentType, $autoDetectFormats)){echo ‘_‘ . $autoDetectFormats[$contentType]($response);}//+++++++++++++++++++++++++++++++++++++++++++++++++++++++// 常用 格式化 方法//+++++++++++++++++++++++++++++++++++++++++++++++++++++++/** * 格式化xml輸出 */function _xml($string){return $string ? (array)simplexml_load_string($string, ‘SimpleXMLElement‘, LIBXML_NOCDATA) : array();}/** * 格式化csv輸出 */function _csv($string){$data = array();$rows = explode("\n", trim($string));$headings = explode(‘,‘, array_shift($rows));foreach( $rows as $row ){// 利用 substr 去掉 開始 與 結尾 的 "$data_fields = explode(‘","‘, trim(substr($row, 1, -1)));if (count($data_fields) === count($headings)){$data[] = array_combine($headings, $data_fields);}}return $data;}/** * 格式化json輸出 */function _json($string){return json_decode(trim($string), true);}/** * 還原序列化輸出 */function _serialize($string){return unserialize(trim($string));}/** * 執行PHP指令碼輸出 */function _php($string){$string = trim($string);$populated = array();eval("\$populated = \"$string\";");return $populated;}

PHP如何自動識別第三方Restful API的內容，自動渲染成 json、xml、html、serialize、csv、php等資料