hphp/test/zend/bad/ext/standard/tests/array/009.php

   1 <?php
   2 /* Prototype & Usage:
   3    mixed key ( array &$array ) -> returns the index element of the current array position
   4    mixed current ( array &$array ) -> returns the current element in the array
   5    mixed next ( array &$array ) -> similar to current() but advances the internal pointer to next element
   6    mixed reset ( array &$array ) -> Reset the internal pointer to first element
   7 */
   8
   9 $basic_arrays = array (
  10   array(0),  // array with element as 0
  11   array(1),  // array with single element
  12   array(1,2, 3, -1, -2, -3),               // array of integers
  13   array(1.1, 2.2, 3.3, -1.1, -2.2, -3.3),  // array of floats
  14   array('a', 'b', 'c', "ab", "ac", "ad"),  // string array
  15   array("a" => "apple", "b" => "book", "c" => "cook"),  // associative array
  16   array('d' => 'drink', 'p' => 'port', 's' => 'set'),   // another associative array
  17   array(1 => 'One', 2 => 'two', 3 => "three")           // associative array with key as integers
  18 );
  19
  20 $varient_arrays = array (
  21    array(),    // empty array
  22    array(""),  // array with null string
  23    array(NULL),// array with NULL
  24    array(null),// array with null
  25    array(NULL, true, null, "", 1), // mixed array
  26    array(-1.5 => "test", -2 => "rest", 2.5 => "two",
  27          "" => "string", 0 => "zero", "" => "" ) // mixed array
  28 );
  29
  30 echo "*** Testing basic operations ***\n";
  31 $loop_count = 1;
  32 foreach ($basic_arrays as $sub_array )  {
  33   echo "-- Iteration $loop_count --\n";
  34   $loop_count++;
  35   $c = count ($sub_array);
  36   $c++; // increment by one to create the situation of accessing beyond array size
  37   while ( $c ) {
  38     var_dump( current($sub_array)); // current element
  39     var_dump( key($sub_array) );    // key of the current element
  40     var_dump( next($sub_array) );   // move to next element
  41     $c --;
  42   }
  43   var_dump( reset($sub_array) );    // reset the internal pointer to first element
  44   var_dump( key($sub_array) );      // access the array after reset
  45   var_dump( $sub_array );           // dump the array to see that its intact
  46
  47   echo "\n";
  48 }
  49
  50 echo "\n*** Testing possible variations ***\n";
  51 $loop_count = 1;
  52 foreach ($varient_arrays as $sub_array )  {
  53   echo "-- Iteration $loop_count --\n";
  54   $loop_count++;
  55   $c = count ($sub_array);
  56   $c++; // increment by one to create the situation of accessing beyond array size
  57   while ( $c ) {
  58     var_dump( current($sub_array)); // current element
  59     var_dump( key($sub_array) );    // key of the current element
  60     var_dump( next($sub_array) );   // move to next element
  61     $c --;
  62   }
  63   var_dump( reset($sub_array) );    // reset the internal pointer to first element
  64   var_dump( key($sub_array) );      // access the array after reset
  65   var_dump( $sub_array );           // dump the array to see that its intact
  66   echo "\n";
  67 }
  68
  69 /*test these functions on array which is already unset */
  70 echo "\n-- Testing variation: when array is unset --\n";
  71 $unset_array = array (1);
  72 unset($unset_array);
  73
  74 var_dump( current($unset_array) );
  75 var_dump( key($unset_array) );
  76 var_dump( next($unset_array) );
  77 var_dump( reset($unset_array) );
  78
  79
  80 echo "\n*** Testing error conditions ***\n";
  81 //Zero argument, expected 1 argument
  82 var_dump( key() );
  83 var_dump( current() );
  84 var_dump( reset() );
  85 var_dump( next() );
  86
  87 // args more than expected, expected 1 argument
  88 $temp_array = array(1);
  89 var_dump( key($temp_array, $temp_array) );
  90 var_dump( current($temp_array, $temp_array) );
  91 var_dump( reset($temp_array, $temp_array) );
  92 var_dump( next($temp_array, $temp_array) );
  93
  94 // invalid args type, valid argument: array
  95 $int_var = 1;
  96 $float_var = 1.5;
  97 $string = "string";
  98 var_dump( key($int_var) );
  99 var_dump( key($float_var) );
 100 var_dump( key($string) );
 101
 102 var_dump( current($int_var) );
 103 var_dump( current($float_var) );
 104 var_dump( current($string) );
 105
 106 var_dump( next($int_var) );
 107 var_dump( next($float_var) );
 108 var_dump( next($string) );
 109
 110 var_dump( reset($int_var) );
 111 var_dump( reset($float_var) );
 112 var_dump( reset($string) );
 113
 114 echo "Done\n";
 115 ?>