class systemConfig { function getStatusCodeMeeage($status){ $codes = Array( 100 => ‘Continue’, 101 => ‘Switching Protocols’, 200 => ‘OK’, 201 => ‘Created’, 202 => ‘Accepted’, 203 => ‘Non-Authoritative Information’, 204 => ‘No Content’, 205 => ‘Reset Content’, 206 => ‘Partial Content’, 300 => ‘Multiple Choices’, 301 => ‘Moved Permanently’, 302 => ‘Found’, 303 => ‘See Other’, 304 => ‘Not Modified’, 305 => ‘Use Proxy’, 306 => ‘(Unused)’, 307 => ‘Temporary Redirect’, 400 => ‘Bad Request’, 401 => ‘Unauthorized’, 402 => ‘Payment Required’, 403 => ‘Forbidden’, 404 => ‘Not Found’, 405 => ‘Method Not Allowed’, 406 => ‘Not Acceptable’, 407 => ‘Proxy Authentication Required’, 408 => ‘Request Timeout’, 409 => ‘Conflict’, 410 => ‘Gone’, 411 => ‘Length Required’, 412 => ‘Precondition Failed’, 413 => ‘Request Entity Too Large’, 414 => ‘Request-URI Too Long’, 415 => ‘Unsupported Media Type’, 416 => ‘Requested Range Not Satisfiable’, 417 => ‘Expectation Failed’, 500 => ‘Internal Server Error’, 501 => ‘Not Implemented’, 502 => ‘Bad Gateway’, 503 => ‘Service Unavailable’, 504 => ‘Gateway Timeout’, 505 => ‘HTTP Version Not Supported’ ); return (isset($codes[$status])) ? $codes[$status] : ”; } /// Trả về response using HTTP header function sendResponse($status = 200, $body = ”, $content_type = ‘text/html’) { $status_header = ‘HTTP/1.1 ‘ . $status . ‘ ‘ . $this->getStatusCodeMeeage($status); header($status_header); header(‘Content-type: ‘ . $content_type); echo $body; } //Dinh nghia connect to db } 

<?php include(“../testExample/config/systemConfig.php”); class imageResources { private $dbReference; var $dbConnect; var $result; function __construct(){ } function __destruct(){ } //get images function getAllImageResource(){ $this->dbReference = new systemConfig(); $this->dbConnect = $this->dbReference->connectDB(); if ($this->dbConnect == NULL) { $this->dbReference->sendResponse(503,'{“error_message”:’.$this->dbReference->getStatusCodeMeeage(503).’}’); }else{ $sql = “SELECT * FROM xxx”; $number_per_page = $_POST[“number_per_page”]; $page = ($_POST[“page”]-1)*$number_per_page +1; $page_next = $_POST[“page”]*$number_per_page; //echo “$page”; $this->result = $this->dbConnect->query($sql); if($this->result->num_rows > 0){ // output data of each row $resultSet = array(); while($row = $this->result->fetch_assoc()) { $resultSet[] = $row; } $this->dbReference->sendResponse(200,'{“items”:’.json_encode($resultSet).’}’); }else{ //echo “0 results”; $this->dbReference->sendResponse(200,'{“items”:null}’); } } } } >