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Esse snippet cria attachments no wordpress. Lê uma pasta com várias imagens, criando um looping nelas e retornando os IDs dos attachments. Baseado em algumas respostas no stackoverflow
// Caminho do servidor
$where_read = ABSPATH . 'caminho/para/os/arquivos';
// Pega apenas arquivos, ignorando o que não tiver extensão ( pastas )
$files_array = glob( $where_read . "/*.{*}", GLOB_BRACE );
$upload_dir = wp_upload_dir();
foreach( $files_array as $file ):
/**
*
* $file aqui tem que ser o caminho completo no servidor (/home/[dominio]/public_html/wp-content/uploads/arquivo.jpg)
*
*/
$image_url = $file;
$image_data = file_get_contents( $image_url );
$filename = basename( $image_url );
if ( wp_mkdir_p( $upload_dir['path'] ) ) {
$file = $upload_dir['path'] . '/' . $filename;
} else {
$file = $upload_dir['basedir'] . '/' . $filename;
}
file_put_contents( $file, $image_data );
$wp_filetype = wp_check_filetype( $filename, null );
$attachment = [
'post_mime_type' => $wp_filetype['type'],
'post_title' => sanitize_file_name( $filename ),
'post_content' => '',
'post_status' => 'inherit'
];
// Armazena os ids dos attachments.
$attach_id[] = wp_insert_attachment( $attachment, $file );
require_once( ABSPATH . 'wp-admin/includes/image.php' );
// Gera os metadatas necessários para que os attachments funcionem normalmente.
$attach_data = wp_generate_attachment_metadata( $attach_id, $file );
wp_update_attachment_metadata( $attach_id, $attach_data );
endforeach;
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