This question sounds easy, but it is not as simple as it sounds.
Brief summary of what\'s wrong
For an example, use this board; http://pinterest
Okay, so I think this may be (with a few alterations) what you need.
Caveats:
Points of interest:
_
parameter takes a timestamp in JavaScript format, ie. like Unix time but it has milliseconds added. It's not actually used for pagination.bookmarks
property, so you make the first request to the 'new' endpoint which doesn't require it, and then take the bookmarks
from the result and use it in your request to get the next 'page' of results, take the bookmarks
from those results to fetch the next page after that, and so on until you run out of results or reach your pre-set limit (or you hit the server max for script execution time). I'd be curious to know exactly what the bookmarks
field encodes. I would like to think there's some fun secret sauce beyond just a pin ID or some other page marker. $limit ) return false;
// are we getting a next page of pins or not
$next_page = false;
if( isset($bookmarks_str) ) $next_page = true;
// build url components
if( !$next_page ) {
// 1st time
$search_res = 'BaseSearchResource'; // end point
$path = '&module_path=' . urlencode('SearchInfoBar(query=' . $search_str . ', scope=boards)');
$data = preg_replace("'[\n\r\s\t]'","",'{
"options":{
"scope":"pins",
"show_scope_selector":true,
"query":"' . $search_str . '"
},
"context":{
"app_version":"2f83a7e"
},
"module":{
"name":"SearchPage",
"options":{
"scope":"pins",
"query":"' . $search_str . '"
}
},
"append":false,
"error_strategy":0
}');
} else {
// this is a fetch for 'scrolling', what changes is the bookmarks reference,
// so pass the previous bookmarks value to this function and it is included
// in query
$search_res = 'SearchResource'; // different end point from 1st time search
$path = '';
$data = preg_replace("'[\n\r\s\t]'","",'{
"options":{
"query":"' . $search_str . '",
"bookmarks":["' . $bookmarks_str . '"],
"show_scope_selector":null,
"scope":"pins"
},
"context":{
"app_version":"2f83a7e"
},
"module":{
"name":"GridItems",
"options":{
"scrollable":true,
"show_grid_footer":true,
"centered":true,
"reflow_all":true,
"virtualize":true,
"item_options":{
"show_pinner":true,
"show_pinned_from":false,
"show_board":true
},
"layout":"variable_height"
}
},
"append":true,
"error_strategy":2
}');
}
$data = urlencode($data);
$timestamp = time() * 1000; // unix time but in JS format (ie. has ms vs normal server time in secs), * 1000 to add ms (ie. 0ms)
// build url
$url = 'http://pinterest.com/resource/' . $search_res . '/get/?source_url=/search/pins/?q=' . $search_str
. '&data=' . $data
. $path
. '&_=' . $timestamp;//'1378150472669';
// setup curl
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array("X-Requested-With: XMLHttpRequest"));
// get result
$curl_result = curl_exec ($ch); // this echoes the output
$curl_result = json_decode($curl_result);
curl_close ($ch);
// clear html to make var_dumps easier to see when debugging
// $curl_result->module->html = '';
// isolate the pin data, different end points have different data structures
if(!$next_page) $pin_array = $curl_result->module->tree->children[1]->children[0]->children[0]->children;
else $pin_array = $curl_result->module->tree->children;
// map the pin data into desired format
$pin_data_array = array();
$bookmarks = null;
if(is_array($pin_array)) {
if(count($pin_array)) {
foreach ($pin_array as $pin) {
//setup data
$image_id = $pin->options->pin_id;
$image_data = ( isset($pin->data->images->originals) ) ? $pin->data->images->originals : $pin->data->images->orig;
$pin_url = 'http://pinterest.com/pin/' . $image_id . '/';
$original_url = $pin->data->link;
$video = $pin->data->is_video;
array_push($pin_data_array, array(
"id" => $image_id,
"image" => $image_data,
"pin_link" => $pin_url,
"orig_link" => $original_url,
"video_flag" => $video,
));
}
$bookmarks = reset($curl_result->module->tree->resource->options->bookmarks);
} else {
$pin_data_array = false;
}
}
// recurse until we're done
if( !($pin_data_array === false) && !is_null($bookmarks) ) {
// more pins to get
$more_pins = $this->get_tagged_pins($search_str, $limit, $bookmarks, ++$page);
if( !($more_pins === false) ) $pin_data_array = array_merge($pin_data_array, $more_pins);
return $pin_data_array;
}
// end of recursion
return false;
}
} // end class Skrivener_Pins
} // end if
/**
* Debug/Demo Code
* delete or comment this section for production
*/
// output headers to control how the content displays
// header("Content-Type: application/json");
header("Content-Type: text/plain");
// header("Content-Type: text/html");
// define search term
// $tag = "vader";
$tag = "haemolytic";
// $tag = "qjkjgjerbjjkrekhjk";
if(class_exists('Skrivener_Pins')) {
// instantiate the class
$pin_handler = new Skrivener_Pins();
// get pins, pinterest returns 25 per batch, function pages through this recursively, pass in limit to
// override default limit on number of pages to retrieve, avoid high limits (eg. limit of 20 * 25 pins/page = 500 pins to pull
// and 20 separate calls to Pinterest)
$pins1 = $pin_handler->get_tagged_pins($tag, 2);
// display the pins for demo purposes
echo 'Images on Pinterest mentioning "' . $tag . '"
' . "\n";
if( $pins1 != false ) {
echo '' . count($pins1) . ' images found.
' . "\n";
skrivener_dump_images($pins1, 5);
} else {
echo 'No images found.
' . "\n";
}
}
// demo function, dumps images in array to html img tags, can pass limit to only display part of array
function skrivener_dump_images($pin_array, $limit = false) {
if(is_array($pin_array)) {
if($limit) $pin_array = array_slice($pin_array, -($limit));
foreach ($pin_array as $pin) {
echo '' . "\n";
}
}
}
?>
Let me know if you run into problems getting this adapted to your particular end points. Apols for any sloppiness in the code, it didn't make it to production originally.