[ 0 => '_DOUBLE_QUOTES_aoa\\xCC\\x8Abco\\xCC\\x88O_DOUBLE_QUOTES_', 1 => 2, 2 => -1,]
[ 'result' => [ 'string' => 'åbcö', 'encoded' => 'a%CC%8Abco%CC%88', ], 'php_version' => '7.1.33 Linux x86_64',]