hphp/test/zend/good/ext/standard/tests/array/array_flip_basic.php

   1 <?hh
   2 /* Prototype  : array array_flip(array $input)
   3  * Description: Return array with key <-> value flipped
   4  * Source code: ext/standard/array.c
   5 */
   6 <<__EntryPoint>> function main(): void {
   7 echo "*** Testing array_flip() : basic functionality ***\n";
   8
   9 // array with default keys - numeric values
  10 $input = varray[1, 2];
  11 var_dump( array_flip($input) );
  12
  13 // array with default keys - string values
  14 $input = varray['value1', "value2"];
  15 var_dump( array_flip($input) );
  16
  17 // associative arrays - key as string
  18 $input = darray['key1' => 1, "key2" => 2];
  19 var_dump( array_flip($input) );
  20
  21 // associative arrays - key as numeric
  22 $input = darray[1 => 'one', 2 => "two"];
  23 var_dump( array_flip($input) );
  24
  25 // combination of associative and non-associative array
  26 $input = darray[1 => 'one', 2 => 'two', 3 => 'three', 4 => 4, "five" => 5];
  27 var_dump( array_flip($input) );
  28 echo "Done";
  29 }