How to save a picture from URI given in a JSON feed - php

Question

I read a JSON feed in PHP from an external website. In this feed I have to pictures URI. I’m writing a wordpress plugin to create posts from this JSON feed but I would be able to download the pictures and save them inside my WordPress uploads folder.
Any idea how I can do this?

Answer 1

function to save the image:
function insert_attachment_from_url($url, $parent_post_id = null) {
if( !class_exists( 'WP_Http' ) )
include_once( ABSPATH . WPINC . '/class-http.php' );
$http = new WP_Http();
$response = $http->request( $url );
if( $response['response']['code'] != 200 ) {
return false;
}
$upload = wp_upload_bits( basename($url), null, $response['body'] );
if( !empty( $upload['error'] ) ) {
return false;
}
$file_path = $upload['file'];
$file_name = basename( $file_path );
$file_type = wp_check_filetype( $file_name, null );
$attachment_title = sanitize_file_name( pathinfo( $file_name, PATHINFO_FILENAME ) );
$wp_upload_dir = wp_upload_dir();
$post_info = array(
'guid' => $wp_upload_dir['url'] . '/' . $file_name,
'post_mime_type' => $file_type['type'],
'post_title' => $attachment_title,
'post_content' => '',
'post_status' => 'inherit',
);
$attach_id = wp_insert_attachment( $post_info, $file_path, $parent_post_id );
require_once( ABSPATH . 'wp-admin/includes/image.php' );
$attach_data = wp_generate_attachment_metadata( $attach_id, $file_path );
wp_update_attachment_metadata( $attach_id, $attach_data );
set_post_thumbnail( $parent_post_id, $attach_id );
return $attach_id;
}
and to run the function:
$image = 'YOUR_IMAGE_URL';
insert_attachment_from_url( $image );