Question

In my index file, I display a randomized image from image.php file. I’m trying to find the way to get the image display in the index file to post to facebook wall.

Is there any way i can post an image generated from image.php to facebook wall?

//index file
<img src="image.php">

//post to wall file
$facebook->api("/me/feed", "post", array(
    'message' => "",
    'picture' => "",       //same image from image.php goes here
    'link' => "",
    'name' => "",
    'caption' => ""
));

Answer 1

If your site is example.com, this should work just fine:

'message' => 'http://example.com/image.php',

Note: I’d recommend being consistent with your quotes – either always use single or double quotes, don’t mix them like you did here.

Update

Replace the image tag where you display the image with this:

//index file
<img src="image.php?postfb=1">

image.php:

// image selection/generation code first
// there's probably an URL to the image here somewhere, I'll assume its $image_url

// then:
if (isset ($_GET ['postfb'])) {
    //post to wall file
    $facebook->api("/me/feed", "post", array(
        'message' => "",
        'picture' => $image_url, 
        'link' => "",
        'name' => "",
        'caption' => ""
    ));
}