add support for linux shell command

binding/php/testSearcher_immediate.php

@@ -0,0 +1,62 @@
+<?php
+/**
+* 支持以下三种查询方式:
+* echo  125.39.52.26 | php ./testSearcher_immediate.php
+* php ./testSearcher_immediate.php 125.39.52.26 
+* cat t.txt | awk '{print $5}' | xargs php ./testSearcher_immediate.php 
+*/
+require dirname(__FILE__) . '/Ip2Region.class.php';
+
+class IpSearcher
+{
+    private static $dbFile = "../../data/ip2region.db";
+    private static  $method     = 'btreeSearch';
+    private static  $algorithm  = 'B-tree';
+    private static  $ip2regionObj;
+
+    private $argv;
+
+    public function __construct($argv)
+    {
+        $this->argv = $argv;
+        self::$ip2regionObj = new Ip2Region(self::$dbFile);
+    }
+
+    public function run()
+    {
+        if (!empty($this->argv[1])) // cat与直接参数
+        {
+            $len = count($this->argv);
+            for ($i = 1; $i <= $len - 1; $i++ )
+            {
+                $this->search($this->argv[$i]);
+            }
+        }
+        else    // echo 方式
+        {
+            $ip = trim(fgets(STDIN));
+            if (!empty($ip))
+            {
+                $this->search($ip);    
+            }
+        }
+    }
+
+    private function getTime()
+    {
+        return (microtime(true) * 1000);
+    }
+
+    private function search($ip)
+    {
+        $s_time = $this->getTime();
+        $data   = self::$ip2regionObj->{self::$method}($ip);
+        $c_time = $this->getTime() - $s_time;
+        printf("%s|%s in %.5f millseconds\n", $data['city_id'], $data['region'], $c_time); 
+    }
+}
+
+$is = new IpSearcher($argv);
+$is->run();
+
+?>