How to enable curl_init() in PHP Runtime?

[Kseniya Andryushyna]

Hi,

I'm pretty new to programing all together and PHP in particular, so I apologize if my question sound stupid.

I want to write an app that will use Maps Engine API. I've installed Apps Engine PHP SDK, gone through all registrations and so on.

The 1st example shown in Map Engine page is not running in PHP Runtime. I receive an error: Call to undefined function curl_init(). From bits of information that I found and understood it looks like cURL library is not installed.

Could you please help me to understand if my assumption is true and if it is - advise how to install the library?

Thanks

[Barry Hunter]

Curl is library that for making HTTP requests. 

AppEngine has a different library - URL Fetch - which has been intergrated into the standard PHP wrappers. 

The code should be converted to use standard php functions instead. 

See:

https://developers.google.com/appengine/docs/php/urlfetch/

The function GetAsJson could be rewritten as something like

 function GetAsJson($url) {
    $data = file_get_contents($url);
    foreach ($http_response_header as $header_line)
        if (preg_match('/^HTTP\/\d.\d (\d+)/,$header_line,$match))
              $http_status = intval($match[1]);  
    return array($http_status, json_decode($data));
}

getting the data itself is as simple as using file_get_contents, but getting the status code is a little more tricky. 

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[Vinny P]

I would suggest using pUrl: https://github.com/azayarni/purl 

It's basically a reimplementation of curl in pure PHP. It doesn't support all of curl's features, but it'll get you up and running quickly and you can fix any problems down the road.

In the longer run, you should star the following issue: https://code.google.com/p/googleappengine/issues/detail?id=9343 ( PHP - cUrl library) for curl support on App Engine.

 

-----------------

-Vinny P

Technology & Media Consultant

Chicago, IL

App Engine Code Samples: http://www.learntogoogleit.com