<?php
/*
Plugin Name: Auto Upload Images
Plugin URI: http://p30design.net/1391/08/wp-auto-upload-images.html
Description: Automatically upload external images of a post to wordpress upload directory
Version: 1.4.1
Author: Ali Irani
Author URI: http://p30design.net
License: GPLv2 or later
*/
class wp_auto_upload {
function __construct() {
add_action('save_post', array($this, 'auto_upload'));
}
/**
* Automatically upload external images of a post to wordpress upload directory
*
* @param $post_id
*/
public function auto_upload( $post_id ) {
if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
return;
if ( defined( 'DOING_AJAX' ) && DOING_AJAX )
return;
if ( false !== wp_is_post_revision($post_id) )
return;
global $wpdb;
$content = $wpdb->get_var( "SELECT post_content FROM wp_posts WHERE ID='$post_id' LIMIT 1" );
$images_url = $this->wp_get_images_url($content);
if($images_url) {
foreach ($images_url as $image_url) {
if(!$this->wp_is_myurl($image_url) && $new_image_url = $this->wp_save_image($image_url, $post_id)) {
$new_images_url[] = $new_image_url;
unset($new_image_url);
} else {
$new_images_url[] = $image_url;
}
}
$total = count($new_images_url);
for ($i = 0; $i <= $total-1; $i++) {
$new_images_url[$i] = parse_url($new_images_url[$i]);
$content = preg_replace('/'. preg_quote($images_url[$i], '/') .'/', $new_images_url[$i]['path'], $content);
}
remove_action( 'save_post', array($this, 'auto_upload') );
wp_update_post( array('ID' => $post_id, 'post_content' => $content) );
add_action( 'save_post', array($this, 'auto_upload') );
}
}
/**
* Detect url of images which exists in content
*
* @param $content
* @return array of urls or false
*/
public function wp_get_images_url( $content ) {
preg_match_all('/<img[^>]*src=("|\')([^(\?|#|"|\')]*)(\?|#)?[^("|\')]*("|\')[^>]*\/>/', $content, $urls, PREG_SET_ORDER);
if(is_array($urls)) {
foreach ($urls as $url)
$images_url[] = $url[2];
}
if (is_array($images_url)) {
$images_url = array_unique($images_url);
rsort($images_url);
}
return isset($images_url) ? $images_url : false;
}
/**
* Check url is internal or external
*
* @param $url
* @return true or false
*/
public function wp_is_myurl( $url ) {
$url = $this->wp_get_base_url($url);
$myurl = $this->wp_get_base_url(get_bloginfo('url'));
switch ($url) {
case NULL:
case $myurl:
return true;
break;
default:
return false;
break;
}
}
/**
* Give a $url and return Base of a $url
*
* @param $url
* @return base of $url without wwww
*/
public function wp_get_base_url( $url ) {
$url = parse_url($url, PHP_URL_HOST); // Give base URL
$temp = preg_split('/^(www(2|3)?\.)/i', $url, -1, PREG_SPLIT_NO_EMPTY); // Delete www from URL
return $temp[0];
}
/**
* Save image on wp_upload_dir
* Add image to Media Library and attach to post
*
* @param $url
* @param $post_id
* @return new $url or false
*/
public function wp_save_image($url, $post_id = 0) {
$image_name = basename($url);
$upload_dir = wp_upload_dir(date('Y/m'));
$path = $upload_dir['path'] . '/' . $image_name;
$new_image_url = $upload_dir['url'] . '/' . rawurlencode($image_name);
$file_exists = true;
$i = 0;
while ( $file_exists ) {
if ( file_exists($path) ) {
if ( $this->wp_get_exfilesize($url) == filesize($path) ) {
return $new_image_url;
} else {
$i++;
$path = $upload_dir['path'] . '/' . $i . '_' . $image_name;
$new_image_url = $upload_dir['url'] . '/' . $i . '_' . $image_name;
}
} else {
$file_exists = false;
}
}
if(function_exists('curl_init')) {
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
$data = curl_exec($ch);
curl_close($ch);
file_put_contents($path, $data);
$wp_filetype = wp_check_filetype($new_image_url);
$attachment = array(
'guid' => $new_image_url,
'post_mime_type' => $wp_filetype['type'],
'post_title' => preg_replace('/\.[^.]+$/', '', basename($new_image_url)),
'post_content' => '',
'post_status' => 'inherit'
);
wp_insert_attachment($attachment, $path, $post_id);
return $new_image_url;
} else {
return false;
}
}
/**
* return size of external file
*
* @param $file
* @return $size
*/
public function wp_get_exfilesize( $file ) {
$ch = curl_init($file);
curl_setopt($ch, CURLOPT_NOBODY, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
$data = curl_exec($ch);
curl_close($ch);
if (preg_match('/Content-Length: (\d+)/', $data, $matches))
return $contentLength = (int)$matches[1];
else
return false;
}
}
$wp_auto_upload = new wp_auto_upload();
