array_key

WMPRO, WMMINI FW >= 1.953 WMMEGA FW >= 2.0

Return the key for an array index

$array: An array with key/value pairs

$index: The index for the array element (the first element is index 0)

String containing the key name of the array element at the specified index

<pre><?
  $arr=array();
  $arr['name']="John";
  $arr['age']=30;
  $arr['status']=1;
 
  for ($i=0; $i < sizeof($arr); $i++) {
    $key=array_key($arr,$i);
    print("Key at Index ".$i." is ".$key." and value is ".$arr[$key]."\r\n");
  }
?></pre>

The above example will output:

Key at Index 0 is name and value is John
Key at Index 1 is age and value is 30
Key at Index 2 is status and value is 1

array() - Create an array, with optional values

array_keys() - Return keys for an array that has key/value pairs

sizeof() - Return the number of elements in an array

print_r() - Dump the contents of an array to the current output

uPHP Variable Types and Limits