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<?php
namespace Automattic\Jetpack\Analyzer;
use Automattic\Jetpack\Analyzer\PersistentList\Item as PersistentListItem;
/**
* Handy class for persisting a list of objects that support the to_csv_array method
*/
class PersistentList {
private $items;
function __construct() {
$this->items = array();
}
public function get() {
return $this->items;
public function add( $item ) {
if ( ! is_subclass_of( $item, 'Automattic\Jetpack\Analyzer\PersistentList\Item' ) ) {
throw new \Exception( 'item must extend Automattic\Jetpack\Analyzer\PersistentList\Item' );
$this->items[] = $item;
public function count() {
return count( $this->items );
public function output() {
echo $this->save( 'php://memory' );
* Saves the items to a file and returns the file contents
public function save( $file_path, $allow_empty = true ) {
// Not saving empty files if empty files are not allowed to be saved
if ( ! $allow_empty && empty( $this->items ) ) {
return '';
$handle = fopen( $file_path, 'w+' );
foreach ( $this->items as $item ) {
fputcsv( $handle, $item->to_csv_array() );
rewind( $handle );
$contents = stream_get_contents( $handle );
fclose( $handle );
return $contents;
Automattic /
jetpack
