插入一個base64圖像作爲wordpress後附件

Question

我正在轉換一個base64 png圖像的畫布，現在我想添加此圖像作爲附件。這是我在服務器端的圖像：

$image = 
base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $data['pdf_thumbnail_'.$item_id])); 

我想用wp_insert_attachment()這個圖像添加爲附件。我怎樣才能做到這一點？

Answer 1

使用此代碼：

$upload_dir = wp_upload_dir(); 

// @new 
$upload_path = str_replace('/', DIRECTORY_SEPARATOR, $upload_dir['path']) . DIRECTORY_SEPARATOR; 

$decoded = $image; 
$filename = 'my-base64-image.png'; 

$hashed_filename = md5($filename . microtime()) . '_' . $filename; 

// @new 
$image_upload = file_put_contents($upload_path . $hashed_filename, $decoded); 

//HANDLE UPLOADED FILE 
if(!function_exists('wp_handle_sideload')) { 
    require_once(ABSPATH . 'wp-admin/includes/file.php'); 
} 

// Without that I'm getting a debug error!? 
if(!function_exists('wp_get_current_user')) { 
    require_once(ABSPATH . 'wp-includes/pluggable.php'); 
} 

// @new 
$file    = array(); 
$file['error'] = ''; 
$file['tmp_name'] = $upload_path . $hashed_filename; 
$file['name']  = $hashed_filename; 
$file['type']  = 'image/png'; 
$file['size']  = filesize($upload_path . $hashed_filename); 

// upload file to server 
// @new use $file instead of $image_upload 
$file_return = wp_handle_sideload($file, array('test_form' => false)); 

$filename = $file_return['file']; 
$attachment = array(
'post_mime_type' => $file_return['type'], 
'post_title' => preg_replace('/\.[^.]+$/', '', basename($filename)), 
'post_content' => '', 
'post_status' => 'inherit', 
'guid' => $wp_upload_dir['url'] . '/' . basename($filename) 
); 
$attach_id = wp_insert_attachment($attachment, $filename); 

Source