hphp/test/zend/good/ext/standard/tests/array/array_reverse_variation2.php

   1 <?hh
   2 /* Prototype  : array array_reverse(array $array [, bool $preserve_keys])
   3  * Description: Return input as a new array with the order of the entries reversed
   4  * Source code: ext/standard/array.c
   5 */
   6
   7 /*
   8  * testing the functionality of array_reverse() by giving unexpected values for $preserve_keys argument
   9 */
  10
  11 //get a class
  12 class classA
  13 {
  14   public function __toString(){
  15     return "Class A object";
  16   }
  17 }
  18 <<__EntryPoint>> function main(): void {
  19 echo "*** Testing array_reverse() : usage variations ***\n";
  20
  21 // Initialise the array
  22 $array = array("a" => "green", "red", "blue", "red", "orange", "pink");
  23
  24 //get an unset variable
  25 $unset_var = 10;
  26 unset ($unset_var);
  27
  28 //get a resource variable
  29 $fp = fopen(__FILE__, "r");
  30
  31 //array of values to iterate over
  32 $preserve_keys = array (
  33
  34        // int data
  35 /*1*/  0,
  36        1,
  37        12345,
  38        -2345,
  39
  40        // float data
  41 /*5*/  10.5,
  42        -10.5,
  43        10.5e10,
  44        10.6E-10,
  45        .5,
  46
  47        // array data
  48 /*10*/ array(),
  49        array(0),
  50        array(1),
  51        array(1, 2),
  52        array('color' => 'red', 'item' => 'pen'),
  53
  54        // null data
  55 /*15*/ NULL,
  56        null,
  57
  58        // boolean data
  59        true,
  60        false,
  61        TRUE,
  62        FALSE,
  63
  64        // empty data
  65 /*21*/
  66        "",
  67        '',
  68
  69        // object data
  70        new classA(),
  71
  72        // undefined data
  73        @$undefined_var,
  74
  75        // unset data
  76        @$unset_var,
  77
  78        // resource variable
  79 /*26*/ $fp
  80
  81 );
  82
  83 // loop through each element of the array $preserve_keys to check the behavior of array_reverse()
  84 $iterator = 1;
  85 foreach($preserve_keys as $preserve_key) {
  86   echo "-- Iteration $iterator --\n";
  87   try { var_dump( array_reverse($array, $preserve_key) ); } catch (Exception $e) { echo "\n".'Warning: '.$e->getMessage().' in '.__FILE__.' on line '.__LINE__."\n"; }
  88   $iterator++;
  89 };
  90
  91 // close the file resouce used
  92 fclose($fp);
  93
  94 echo "Done";
  95 }