add php api

api/php/GstoreConnector.php

@@ -0,0 +1,64 @@
+<?php
+class Connector {
+    private $socket;
+    private $port;
+    private $host;
+    public function __construct($host, $port) {
+        $this->host = $host;
+        $this->port = $port;
+        $this->socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
+        if (!$this->socket) {
+            exit('socket creation error.');
+        }
+        $result = socket_connect($this->socket, $this->host, $this->port);
+        if (!$result) {
+            exit('socket connection error.' . $this->host);
+        }
+    }
+    public function send($data) {
+        $head = pack("L", strlen($data));
+        $result = socket_write($this->socket, $head . $data);
+        if (!$result) {
+            exit('message sending error');
+        }
+        return $result;
+    }
+    public function recv() {
+        $head = socket_recv($this->socket, $buf, 4, MSG_OOB / MSG_PEEK);
+        if (!$head) {
+            exit('message receiving error');
+        } else {
+            socket_recv($this->socket, $buf, 8192, MSG_OOB / MSG_PEEK);
+            return $buf;
+        }
+    }
+    public function build($db_name, $rdf_file_path) {
+        $data = "import " . $db_name . " " . $rdf_file_path . "\0";
+        self::send($data);
+        $result = self::recv();
+        return $result;
+    }
+    public function load($db_name) {
+        $data = "load " . $db_name . "\0";
+        self::send($data);
+        $result = self::recv();
+        return $result;
+    }
+    public function unload($db_name) {
+        $data = "unload " . $db_name;
+        self::send($data);
+        $result = self::recv();
+        return $result;
+    }
+    public function query($sparql) {
+        $data = "query " . $sparql . "\0";
+        self::send($data);
+        $result = self::recv();
+        return $result;
+    }
+    public function __desctruct() {
+        socket_close($this->socket);
+    }
+}
+?>
+

api/php/PHPAPIExample.php

@@ -0,0 +1,19 @@
+<?php
+require 'GstoreConnector.php';
+$host = '127.0.0.1';
+$port = 3305;
+$dbname = "LUBM10.db";
+$dbpath = "./data/LUBM_10.n3";
+$query1 = "select ?x where
+{
+	?x	<ub:name>	<FullProfessor0>.
+}";
+$build= new Connector($host,$port);
+$build->build($dbname, $dbpath);
+$load = new Connector($host,$port);
+$load->load($dbname);
+$query = new Connector($host,$port);
+$result = $query->query($query1);
+echo $result;
+?>
+