hphp/test/zend/good/ext/standard/tests/array/array_merge_variation4.php

   1 <?hh
   2 /* Prototype  : array array_merge(array $arr1, array $arr2 [, array $...])
   3  * Description: Merges elements from passed arrays into one array
   4  * Source code: ext/standard/array.c
   5  */
   6
   7 /*
   8  * Pass an array with different data types as keys to test how array_merge
   9  * adds it onto an existing array
  10  */
  11 <<__EntryPoint>> function main(): void {
  12 echo "*** Testing array_merge() : usage variations ***\n";
  13
  14 // Initialise function arguments not being substituted
  15 $arr = array ('one' => 1, 'two' => 2);
  16
  17 //get an unset variable
  18 $unset_var = 10;
  19 unset ($unset_var);
  20
  21 // heredoc string
  22 $heredoc = <<<EOT
  23 hello world
  24 EOT;
  25
  26 // arrays with keys as different data types to be passed as $input
  27 $inputs = array(
  28
  29        // int data
  30 /*1*/  'int' => array(
  31        0 => 'zero',
  32        1 => 'one',
  33        12345 => 'positive',
  34        -2345 => 'negative',
  35        ),
  36
  37        // float data
  38 /*2*/  'float' => array(
  39        10.5 => 'positive',
  40        -10.5 => 'negative',
  41        .5 => 'half',
  42        ),
  43
  44 /*3*/  'extreme floats' => array(
  45        12.3456789000e10 => 'large',
  46        12.3456789000E-10 => 'small',
  47        ),
  48
  49        // null data
  50 /*4*/  'null uppercase' => array(
  51        NULL => 'null 1',
  52        ),
  53
  54 /*5*/  'null lowercase' => array(
  55        null => 'null 2',
  56        ),
  57
  58        // boolean data
  59 /*6*/ 'bool lowercase' => array(
  60        true => 'lowert',
  61        false => 'lowerf',
  62        ),
  63
  64 /*7*/  'bool uppercase' => array(
  65        TRUE => 'uppert',
  66        FALSE => 'upperf',
  67        ),
  68
  69        // empty data
  70 /*8*/ 'empty double quotes' => array(
  71        "" => 'emptyd',
  72        ),
  73
  74 /*9*/  'empty single quotes' => array(
  75        '' => 'emptys',
  76        ),
  77
  78        // string data
  79 /*10*/ 'string' => array(
  80        "stringd" => 'stringd',
  81        'strings' => 'strings',
  82        $heredoc => 'stringh',
  83        ),
  84
  85        // undefined data
  86 /*11*/ 'undefined' => array(
  87        @$undefined_var => 'undefined',
  88        ),
  89
  90        // unset data
  91 /*12*/ 'unset' => array(
  92        @$unset_var => 'unset',
  93        ),
  94 );
  95
  96 // loop through each element of $inputs to check the behavior of array_merge
  97 $iterator = 1;
  98 foreach($inputs as $key => $input) {
  99   echo "\n-- Iteration $iterator: $key data --\n";
 100   var_dump( array_merge($input, $arr) );
 101   var_dump( array_merge($arr, $input) );
 102   $iterator++;
 103 };
 104
 105 echo "Done";
 106 }