bp_document_mirror_text (attachment_id美元）

函数bp_document_mirror_text($attachment_id) {$mirror_text = ";$extension = bp_document_extension($attachment_id);If (isset($extension) && !empty($extension) && in_array($extension, bp_get_document_preview_code_extensions())) {$words = 8000;更多的美元= '…';$text = get_post_meta($attachment_id， 'document_preview_mirror_text'， true);If ($text) {$text = strlen($text) > $words ?Substr ($text, 0， $words)。“…”:$文本;} else {if (file_exists(get_attachment_file ($attachment_id))) {$image_data = file_get_contents(get_attachment_file ($attachment_id)); $words = 10000; $mirror_text = strlen( $image_data ) > $words ? substr( $image_data, 0, $words ) . '...' : $image_data; update_post_meta( $attachment_id, 'document_preview_mirror_text', $mirror_text ); } } } return $mirror_text; }