hphp/test/zend/good/ext-standard-array/key_variation2.php

   1 <?php
   2 /* Prototype  : mixed key(array $array_arg)
   3  * Description: Return the key of the element currently pointed to by the internal array pointer
   4  * Source code: ext/standard/array.c
   5  */
   6
   7 /*
   8  * Pass arrays where keys are different data types as $array_arg to key() to test behaviour
   9  */
  10
  11 echo "*** Testing key() : usage variations ***\n";
  12
  13 //get an unset variable
  14 $unset_var = 10;
  15 unset ($unset_var);
  16
  17 // heredoc string
  18 $heredoc = <<<EOT
  19 hello world
  20 EOT;
  21
  22 // unexpected values to be passed as $array_arg
  23 $inputs = array(
  24
  25        // int data
  26 /*1*/  'int' => array(
  27        0 => 'zero',
  28        1 => 'one',
  29        12345 => 'positive',
  30        -2345 => 'negative',
  31        ),
  32
  33        // float data
  34 /*2*/  'float' => array(
  35        10.5 => 'positive',
  36        -10.5 => 'negative',
  37        .5 => 'half',
  38        ),
  39
  40 /*3*/  'extreme floats' => array(
  41        12.3456789000e6 => 'large',
  42        12.3456789000E-10 => 'small',
  43        ),
  44
  45        // null data
  46 /*4*/ 'null uppercase' => array(
  47        NULL => 'null 1',
  48        ),
  49
  50 /*5*/  'null lowercase' => array(
  51        null => 'null 2',
  52        ),
  53
  54        // boolean data
  55 /*6*/ 'bool lowercase' => array(
  56        true => 'lowert',
  57        false => 'lowerf',
  58        ),
  59
  60 /*7*/  'bool uppercase' => array(
  61        TRUE => 'uppert',
  62        FALSE => 'upperf',
  63        ),
  64
  65        // empty data
  66 /*8*/ 'empty double quotes' => array(
  67        "" => 'emptyd',
  68        ),
  69
  70 /*9*/  'empty single quotes' => array(
  71        '' => 'emptys',
  72        ),
  73
  74        // string data
  75 /*10*/ 'string' => array(
  76        "stringd" => 'stringd',
  77        'strings' => 'strings',
  78        $heredoc => 'stringh',
  79        ),
  80
  81        // undefined data
  82 /*11*/ 'undefined' => array(
  83        @$undefined_var => 'undefined',
  84        ),
  85
  86        // unset data
  87 /*12*/ 'unset' => array(
  88        @$unset_var => 'unset',
  89        ),
  90 );
  91
  92 // loop through each element of $inputs to check the behavior of key()
  93 $iterator = 1;
  94 foreach($inputs as $key => $input) {
  95   echo "\n-- Iteration $iterator : $key data --\n";
  96   while (key($input) !== NULL) {
  97         var_dump(key($input));
  98         next($input);
  99   }
 100   $iterator++;
 101 };
 102 ?>
 103 ===DONE===