Moin! ~~~ PHP <?php $coso = array ( "a" => array("2.5","2.6","8.8","3.2","8.4","6.1","12.3","16.8","19.8","10.7","8.8"), "b" => array("2.4","2.5","9.2","3.3","8.1","5.4","111.2","16.9","20.2","11.4","9.4"), ); echo $coso['a'][2]; ~~~ erwartungsgemäß: ~~~ fastix@trainer:/tmp$ php test2.php 8.8 ~~~ Wie lautet also Deine Frage? Oder hast Du etwa [**WIRKLICH erst den Array befragt, und ihn dann erst angelegt?**](https://forum.selfhtml.org/self/2016/jan/28/mehrteiliges-array-ausgeben/1659611#m1659611) Jörg Reinholz

Moin! ~~~ PHP <?php $coso = array ( "a" => array("2.5","2.6","8.8","3.2","8.4","6.1","12.3","16.8","19.8","10.7","8.8"), "b" => array("2.4","2.5","9.2","3.3","8.1","5.4","111.2","16.9","20.2","11.4","9.4"), ); echo $coso['a'][2]; ~~~ erwartungsgemäß: ~~~ fastix@trainer:/tmp$ php test2.php 8.8 ~~~ Wie lautet also Deine Frage? Jörg Reinholz