[ 'time' => '12/31/1998 00:00:20', 0 => '%b %d %Y %H:%M:%S', 1 => '$timestamp',]
[ 'result' => [ 'string' => 'Dec 31 1998 00:00:20', ], 'php_version' => '5.6.8 WINNT i586',]
[ 'result' => [ 'string' => 'Dec 30 1998 23:00:20', ], 'php_version' => '7.1.33 Linux x86_64',]