Class PHP XMLHttpRequest Emulator Using Curl.
// XMLHttpRequest emulator using curl. * @version 0.5 2007/07/16 23:00:13 * @link http://www.myopera.com/moises-l Comments & suggestions * @link http://files.myopera.com/moises-l/files/class.XMLHttpRequest.php Available at * @copyright GPL © 2007, Moises Lima * @license http://creativecommons.org/licenses/by-nc-sa/2.5/ Released under a Creative Commons License */ class XMLHttpRequest{ /** * String version of data returned from server process. * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-responsetext * @access public * @var string * @name $responseText */ var $responseText; /** * DOM-compatible document object of data returned from server process. * which can be examined and parsed using W3C DOM node tree methods and properties * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-responsexml * @access public * @var object * @name $responseXML */ var $responseXML; /** * The http status code returned by server as a number (e.g. 404 for "Not Found" or 200 for "OK"). * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-status * @access public * @var number * @name $status */ var $status; /** * The http status code returned by server as a string (e.g. "Not Found" or "OK") * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-statustext * @access public * @var string * @name $statusText */ var $statusText; /** * The state of the object * 0 = uninitialized * 1 = loading * 2 = loaded * 3 = interactive * 4 = complete * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-readystate * @access public * @var number * @name $readyState */ var $readyState; /** * The error string * @link http://www.w3.org/TR/XMLHttpRequest/#notcovered * @access public * @var string * @name $error */ var $error; /** * An event handler for an event that fires at every state change * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-onreadystatechange * @access public * @name $onreadystatechange */ var $onreadystatechange; /** * An event handler for an event that fires at finished requisition * @link http://www.w3.org/TR/XMLHttpRequest/#notcovered * @access public * @name $onload */ var $onload; /** * An event handler for an event that fires at errors * @link http://www.w3.org/TR/XMLHttpRequest/#notcovered * @access public * @name $onerror */ var $onerror; // http://www.w3.org/TR/XMLHttpRequest/#notcovered /** * cURL handle * @access private * @name $curl */ var $curl; /** * responseHeaders process * @access private * @name $responseHeaders */ var $responseHeaders; /** * cURL headers * @access private * @name $headers */ var $headers=array("Connection: Keep-Alive","Keep-Alive: 300"); /** * Curl info * @access public * @name $curl_version * @var Array */ var $curl_version; /** * TRUE to follow any "Location: " header that the server sends as part of the HTTP header. * @access public * @name $followLocation * @var Bolean */ var $followLocation; /** * Class constructor (compatibility with PHP 4). */ function XMLHttpRequest(){ $this->open="function open() { [native code] }"; $this->setRequestHeader="function setRequestHeader() { [native code] }"; $this->getAllResponseHeaders="function getAllResponseHeaders() { [native code] }"; $this->getResponseHeader="function getResponseHeader() { [native code] }"; $this->send="function send() { [native code] }"; $this->readyState = 0; $this->curl = curl_init(); $this->curl_version = curl_version(); $this->followLocation=false; curl_setopt($this->curl, CURLOPT_HEADER, true); if(isset($_SERVER['HTTP_USER_AGENT'])){ curl_setopt($this->curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT'] ); }else{ curl_setopt($this->curl, CURLOPT_USERAGENT, "XMLHttpRequest/0.2"); } curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($this->curl, CURLOPT_TIMEOUT, 1000); curl_setopt($this->curl, CURLOPT_CONNECTTIMEOUT, 300); } /** * @access private */ function __toString(){ return "[object XMLHttpRequest]"; } /** * Specifies the method, URL, and other optional attributes of a request. * @access public * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-open * @param String $method HTTP Methods defined in section 5.1.1 of RFC 2616 http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html * @param String $url Specifies either the absolute or a relative URL of the data on the Web service. * @param Bolean $async FakeSauro Erectus. * @param String $user specifies the name of the user for HTTP authentication. * @param String $password specifies the password of the user for HTTP authentication. * @return void */ function open($method, $url, $async=true, $user="", $password=""){ $this->readyState = 1; if(!empty($method) && !empty($url)){ $method=strtoupper(trim($method)); /* if(!ereg("^(GET|POST|HEAD|PUT|DELETE|OPTIONS)$",$method)){ throw new Exception("Unknown HTTP request method [$method]"); } */ if(isset($_SERVER['HTTP_REFERER']) && empty($this->url) ){ curl_setopt($this->curl, CURLOPT_REFERER, $_SERVER['HTTP_REFERER']); }elseif(isset($this->url)){ curl_setopt($this->curl, CURLOPT_REFERER, $this->url); } $this->url = $url; curl_setopt($this->curl, CURLOPT_URL, $this->url); if($method=="POST"){ curl_setopt($this->curl, CURLOPT_POST, 1); }elseif($method=="GET"){ curl_setopt($this->curl, CURLOPT_POST, 0); }else{ curl_setopt($this->curl, CURLOPT_POST, 0); curl_setopt($this->curl, CURLOPT_CUSTOMREQUEST, $method); } } if(ereg("^(https)",$url)){ curl_setopt($this->curl,CURLOPT_SSL_VERIFYPEER,false); } if(!empty($user) && !empty($password)){ curl_setopt($this->curl, CURLOPT_HTTPAUTH, CURLAUTH_ANY); curl_setopt($this->curl,CURLOPT_USERPWD,$user.":". $password); } } /** * Assigns a label/value pair to the header to be sent with a request. * @access public * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-setrequestheader * @param String $label Specifies the header label. * @param String $value Specifies the header value. * @return void */ function setRequestHeader($label, $value){ $this->headers[] = "$label: $value"; curl_setopt($this->curl, CURLOPT_HTTPHEADER, $this->headers); } /** * Returns complete set of headers (labels and values) as a string. * @access public * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-getallresponseheaders * @return string Complete set of headers (labels and values) as a string */ function getAllResponseHeaders(){ return $this->responseHeaders; } /** * Returns the value of the specified http header. * @access public * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-getresponseheader. * @param String $label * @return String|null The string value of a single header label. */ function getResponseHeader($label){ $value=array(); preg_match_all('/(?s)'.$label.': (.*?)\s\n/i', $this->responseHeaders , $value); if(count($value ) > 0){ return implode(', ' , $value[1]); } return null; } function getResponseHeader2($label){ $value=array(); preg_match('/(?s)'.$label.': (.*?)\s\n/i', $this->responseHeaders , $value); if(count($value ) > 0){ return $value[1]; } return null; } /** * Transmits the request, optionally with postable string or DOM object data. * @access public * @link http://www.w3.org/TR/XMLHttpRequest/#dfn-getresponseheader * @param String $data * @return void */ function send($data=null){ $sT=array(); if(isset($this->onreadystatechange))eval($this->onreadystatechange); if($data){ curl_setopt($this->curl, CURLOPT_POSTFIELDS, $data); } $this->response= curl_exec($this->curl); $header_size = curl_getinfo($this->curl, CURLINFO_HEADER_SIZE); $this->responseHeaders = substr($this->response, 0, $header_size - 4); if($this->followLocation){ $location=array(); while(preg_match('/Location:(.*?)\n/', $this->responseHeaders, $location)){ curl_setopt($this->curl, CURLOPT_REFERER, $this->url); $url = @parse_url(trim(array_pop($location))); if (!$url){ break; } $last_url = parse_url(curl_getinfo($this->curl, CURLINFO_EFFECTIVE_URL)); if (!isset($url['scheme']))$url['scheme'] = $last_url['scheme']; if (!isset($url['host']))$url['host'] = $last_url['host']; if (!isset($url['path']))$url['path'] = $last_url['path']; $this->url = $url['scheme'] . '://' . $url['host'] . $url['path'] . (isset($url['query'])?'?'.$url['query']:''); curl_setopt($this->curl, CURLOPT_POST, 0); //curl_setopt($this->curl, CURLOPT_POSTFIELDS,0); curl_setopt($this->curl, CURLOPT_URL, $this->url); $this->response= curl_exec($this->curl); $header_size = curl_getinfo($this->curl, CURLINFO_HEADER_SIZE); $this->responseHeaders = substr($this->response, 0, $header_size - 4); } } $this->error = curl_error($this->curl); if ($this->error) { if(isset($this->onerror))eval($this->onerror); } $this->readyState = 2; if(isset($this->onreadystatechange))eval($this->onreadystatechange); $this->responseText = substr($this->response, $header_size); preg_match('/^HTTP\/\d\.\d\s+(\d{3}) (.*)\s\n/i', $this->responseHeaders , $sT); if(count($sT ) > 2){ $this->responseHeaders = ereg_replace ($sT[0], "", $this->responseHeaders); $this->status = $sT[1]; $this->statusText = $sT[2]; } if(version_compare(PHP_VERSION , "5", ">=")){ if (preg_match('/(application|text)\/[\w+\+]?xml/i', $this->getResponseHeader("Content-Type"))){ libxml_use_internal_errors(true); $this->responseXML = new DOMDocument(); $this->responseXML->loadXML($this->responseText); $errors = libxml_get_errors(); if (!empty($errors)){ $this->responseXML=null; $error=$errors[0]; $this->error= trim($error->message) ." in $this->url on line $error->line column: $error->column "; if(isset($this->onerror))eval($this->onerror); } libxml_clear_errors(); } } $this->readyState = 3; if(isset($this->onreadystatechange))eval($this->onreadystatechange); $this->headers=Array(); $this->readyState = 4; if(isset($this->onreadystatechange))eval($this->onreadystatechange); if(isset($this->onload))eval($this->onload); } /** * Closes a cURL session and frees all resources. * @name close * @access public * @return void */ function close(){ curl_close($this->curl); } } ?>
July 18, 2007
by Snippets Manager
·
3,175 Views