php：如何在数组中获取数组中值的键

我的全部功能

 function jsonData(){
            //$data = $this->DataSet->query("SELECT * FROM data_sets;");
            $data = $this->DataSet->find('all', array(
            'fields' => array('created','systolisch', 'diastolisch', 'gewicht', 'puls'),
    ));
             $columns = array();
             $values = array();

             $count = count($data);

            for($i=0; $i < $count; $i++)
               {
               $keys[] = array_values($data[$i]);
               $values [] = array_values(array_keys($data[$i]));
               }



            $array = array(
               $keys,
               $values,

                );

            return new CakeResponse(array('body' => json_encode($array), 'type' => 'json'));
    }

我需要的是数组_值（数组（键）lile disatolisch和systolisch的结果的键。这些值也应该呈现为普通值，而不是成对值。

---

如何实现这一点？

您可以使用数组键。这来自php文档：

<?php
$array = array(0 => 100, "color" => "red");
print_r(array_keys($array));

$array = array("blue", "red", "green", "blue", "blue");
print_r(array_keys($array, "blue"));

$array = array("color" => array("blue", "red", "green"),
           "size"  => array("small", "medium", "large"));
print_r(array_keys($array));
?>

---

正如你所看到的，我已经在使用它了，但是没有合适的结果

[[[{"created":"2013-10-29 14:16:38","systolisch":"77","diastolisch":"83","gewicht":"77","puls":"77"}],[{"created":"2013-10-29 14:52:00","systolisch":"99","diastolisch":"88","gewicht":"80","puls":"100"}]],[["DataSet"],["DataSet"]]]

<?php
$array = array(0 => 100, "color" => "red");
print_r(array_keys($array));

$array = array("blue", "red", "green", "blue", "blue");
print_r(array_keys($array, "blue"));

$array = array("color" => array("blue", "red", "green"),
           "size"  => array("small", "medium", "large"));
print_r(array_keys($array));
?>

Array
(
[0] => 0
[1] => color
)

Array
(
[0] => 0
[1] => 3
[2] => 4
)
Array 
(
[0] => color
[1] => size
)