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<?php namespace MediaWiki\Language; class ReplacementArray { private $data; public function __construct( $data ) { $this->data = $data; } public function __sleep() { return [ 'data' ]; } } class_alias( ReplacementArray::class, 'ReplacementArray' ); var_dump( unserialize( 'O:16:"ReplacementArray":1:{s:22:"' . "\0" . 'ReplacementArray' . "\0" . 'data";a:1:{i:0;i:1;}}' ) );
Output for 8.2.30 - 8.2.31, 8.3.5 - 8.3.31, 8.4.9 - 8.4.22, 8.5.0 - 8.5.7
Deprecated: Creation of dynamic property MediaWiki\Language\ReplacementArray::$data is deprecated in /in/AlIPR on line 19 object(MediaWiki\Language\ReplacementArray)#1 (2) { ["data":"MediaWiki\Language\ReplacementArray":private]=> NULL ["data":"ReplacementArray":private]=> array(1) { [0]=> int(1) } }
Output for 8.1.34
object(MediaWiki\Language\ReplacementArray)#1 (2) { ["data":"MediaWiki\Language\ReplacementArray":private]=> NULL ["data":"ReplacementArray":private]=> array(1) { [0]=> int(1) } }

preferences:
39.04 ms | 613 KiB | 4 Q