1--TEST-- 2Test array_keys() function (basic) 3--FILE-- 4<?php 5 6echo "*** Testing array_keys() on basic array operation ***\n"; 7$basic_arr = array("a" => 1, "b" => 2, 2.0 => 2.0, -23.45 => "asdasd", 8 array(1,2,3)); 9var_dump(array_keys($basic_arr)); 10 11echo "Done\n"; 12?> 13--EXPECT-- 14*** Testing array_keys() on basic array operation *** 15array(5) { 16 [0]=> 17 string(1) "a" 18 [1]=> 19 string(1) "b" 20 [2]=> 21 int(2) 22 [3]=> 23 int(-23) 24 [4]=> 25 int(3) 26} 27Done 28