php - 帮助大阵列

Question

我是 php 的新手，我正在尝试使用数组从字符串中过滤一些单词，这是数组:

$array_lugares = array
(
array("barra"=>array
(
/*SENTIDO BARRA*/
"Sao conrado"=>array("-22.999743","-43.270694"),
"Elevado do Joa"=>array("-22.999429","-43.27317")
),
"zona sul"=>array
(
/*SENTIDO ZONA SUL:*/
"passarela da barra"=>array("-23.008346","-43.303708"),
"barra grill"=>array("-23,010576", "-43,302028"),
"lagoa barra"=>array("-22,997348", "-43,263200")
),
"recreio"=>array
(
/*SENTIDO RECREIO:*/
"passarela da barra"=>array("-23.008283","-43.303634"),
"rio mar"=>array("22.999958","-43.402648"),
"ribalta"=>array("-22,999753", "-43,409211")
)));

当我这样做时:

foreach($array_lugares[0]['zona sul'] as $lugar){
echo $lugar;
echo "</br>";
}

输出是:

Array
Array
Array

我怎样才能让它显示:

barra
zona sul 
recreio

在输出中，这可能吗？

Answer 1

 foreach($array_lugares[0] as $k => $lugar){
   echo $k;
   echo "</br>";
 }