Implement setInterface()

Implement Curl::setInterface() and MultiCurl::setInterface()

README.md

@@ -284,6 +284,7 @@ Curl::setRetry($mixed)
 Curl::setTimeout($seconds)
 Curl::setUrl($url, $mixed_data = '')
 Curl::setUserAgent($user_agent)
+Curl::setInterface($interface)
 Curl::setXmlDecoder($mixed)
 Curl::success($callback)
 Curl::unsetHeader($key)
@@ -335,6 +336,7 @@ MultiCurl::setRetry($mixed)
 MultiCurl::setTimeout($seconds)
 MultiCurl::setUrl($url)
 MultiCurl::setUserAgent($user_agent)
+MultiCurl::setInterface($interface)
 MultiCurl::setXmlDecoder($mixed)
 MultiCurl::start()
 MultiCurl::success($callback)

src/Curl/Curl.php

@@ -1222,6 +1222,20 @@ class Curl
         $this->setOpt(CURLOPT_USERAGENT, $user_agent);
     }
 
+    /**
+     * Set Interface
+     * 
+     * The name of the outgoing network interface to use.
+     * This can be an interface name, an IP address or a host name. 
+     *
+     * @access public
+     * @param  $interface
+     */
+    public function setInterface($interface)
+    {
+        $this->setOpt(CURLOPT_INTERFACE, $interface);
+    }
+
     /**
      * Attempt Retry
      *

src/Curl/MultiCurl.php

@@ -787,6 +787,20 @@ class MultiCurl
         $this->setOpt(CURLOPT_USERAGENT, $user_agent);
     }
 
+    /**
+     * Set Interface
+     * 
+     * The name of the outgoing network interface to use.
+     * This can be an interface name, an IP address or a host name. 
+     *
+     * @access public
+     * @param  $interface
+     */
+    public function setInterface($interface)
+    {
+        $this->setOpt(CURLOPT_INTERFACE, $interface);
+    }
+
     /**
      * Start
      *