array_key_first
Gets the first key of an array
&reftitle.description;
mixedarray_key_first
arrayarray
Get the first key of the given array without affecting
the internal array pointer.
&reftitle.parameters;
array
An array.
&reftitle.returnvalues;
Returns the first key of array if the array is not empty;
&null; otherwise.
&reftitle.examples;
Basic <function>array_key_first</function> Usage
1, 'b' => 2, 'c' => 3];
$firstKey = array_key_first($array);
var_dump($firstKey);
?>
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&example.outputs;
&reftitle.seealso;
array_key_last
reset