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php

--TEST--
Test array_flip() function : basic functionality 
--FILE--
<?php
/* Prototype  : array array_flip(array $input)
 * Description: Return array with key <-> value flipped 
 * Source code: ext/standard/array.c
*/

echo "*** Testing array_flip() : basic functionality ***\n";

// array with default keys - numeric values
$input = array(1, 2);   
var_dump( array_flip($input) );

// array with default keys - string values
$input = array('value1', "value2");
var_dump( array_flip($input) );

// associative arrays - key as string
$input = array('key1' => 1, "key2" => 2); 
var_dump( array_flip($input) );

// associative arrays - key as numeric
$input = array(1 => 'one', 2 => "two");
var_dump( array_flip($input) );

// combination of associative and non-associative array
$input = array(1 => 'one','two', 3 => 'three', 4, "five" => 5);
var_dump( array_flip($input) );
echo "Done"
?>
--EXPECTF--
*** Testing array_flip() : basic functionality ***
array(2) {
  [1]=>
  int(0)
  [2]=>
  int(1)
}
array(2) {
  ["value1"]=>
  int(0)
  ["value2"]=>
  int(1)
}
array(2) {
  [1]=>
  string(4) "key1"
  [2]=>
  string(4) "key2"
}
array(2) {
  ["one"]=>
  int(1)
  ["two"]=>
  int(2)
}
array(5) {
  ["one"]=>
  int(1)
  ["two"]=>
  int(2)
  ["three"]=>
  int(3)
  [4]=>
  int(4)
  [5]=>
  string(4) "five"
}
Done