In this tutorial, you shall learn how to get keys of an array in PHP using array_keys() function, with example programs.
PHP – Get keys of an array
To get keys of an associative array in PHP, you can use array_keys() function.
Call array_keys() function, and pass the array as argument. The function returns the keys as an indexed array.
The syntax to get the keys of an array $arr
is
</>
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array_keys($arr)
Example
In the following program, we take an associative array $arr
, and get the keys of this array using array_keys() function.
PHP Program
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<?php
$arr = array(
'foo' => 10,
'bar' => 20,
'das' => 30,
'qux' => 40,
'par' => 50,
'saz' => 60,
);
$keys = array_keys($arr);
print_r($keys);
?>
Output
Conclusion
In this PHP Tutorial, we learned how to get the keys of an array, using array_keys() function.