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run code in 200+ php & hhvm versions
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<?php echo serialize(array( 'de' => 'Page #1 Title in German', 'en' => 'Page #1 Title in English' ));
based on 839HE
Output for 4.3.0 - 7.1.10
a:2:{s:2:"de";s:23:"Page #1 Title in German";s:2:"en";s:24:"Page #1 Title in English";}