How to call a function in wordpress plugin from another site

Question

How to call a function in wordpress plugin from another site

arhakim

2016年11月30日 20:18

I create a plugin and install it in any wordpress sites. For any reason I need to call a function on those plugin from another site (not wordpress site).

I've already try to using cURL and file_get_contents to call the function, in some wordpress site it's worked well, but in some another wordpress site it's not working.

It's failed on calling the function because the wordpress site has the redirect URL or the wordpress site has another plugins installed like captcha, security, etc.

These are the code/function in my plugins:

Class Myplugin{

 ..........

  function get_wp_version(){
    // to do
  }

  function call_api(){
    if($_GET['get_wp_version']  $_GET['token']){
       $wp_version = $this-get_wp_version();
       echo $wp_version;
    }
  }
........
}

And these are the code that I used to call the function from another site:

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://mysite.com/?call_api=get_wp_versiontoken=xxx');
curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_AUTOREFERER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); 
curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
curl_setopt($ch, CURLOPT_TIMEOUT, 0);
$curl_msg = curl_exec($ch);

Any help will be appreciated!

Oops, typo! The functin of my plugin should be like this:

Class Myplugin{

 ..........

  function get_wp_version(){
    // to do
  }

  function call_api(){
    if($_GET['call_api']  $_GET['token']){
      if($_GET['call_api'] == 'get_wp_version'){
        $wp_version = $this-get_wp_version();
        echo $wp_version;
      }
    }
  }
........
}

Topic outside-wordpress plugins Wordpress

Category Web

Sisir · Accepted Answer · 2015年9月26日 07:56

There are two way you can implement this

1. Use the AJAX API

This is the fastest way of doing it. Just register an ajax action and use that action url to send requests.

Example

add_action('wp_ajax_api-call', 'wpse_156943_ajax_api_handle_request');

function wpse_156943_ajax_api_handle_request(){
    // security check validation

    // do whatever you want to do
}

The url for the request will be like http://example.com/wp-admin/admin-ajax.php?action=api-call

2. Create an URL Endpoint

Create a lot user friendly endpoint. For example http://example.com/my-api

Example

add_action( 'wp_loaded', 'wpse156943_internal_rewrites' );
function wpse156943_internal_rewrites(){
    add_rewrite_rule( 'my-api$', 'index.php?my-api=1', 'top' );
}

add_filter( 'query_vars', 'wpse156943_internal_query_vars' );
function wpse156943_internal_query_vars( $query_vars ){
    $query_vars[] = 'my-api';
    return $query_vars;
}

add_action( 'parse_request', 'wpse156943_internal_rewrites_parse_request' );
function wpse156943_internal_rewrites_parse_request( &$wp ){

    if (!array_key_exists( 'my-api', $wp->query_vars ) ) {
        return;
    }

    // security and validation 

    // do whatever you want to do

    die();
}

Hope it helps :)

How to call a function in wordpress plugin from another site

1. Use the AJAX API

2. Create an URL Endpoint

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