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 = dict['one' => 1, 'two' => 2];
  16
  17 // heredoc string
  18 $heredoc = <<<EOT
  19 hello world
  20 EOT;
  21
  22 // arrays with keys as different data types to be passed as $input
  23 $inputs = dict[
  24
  25        // int data
  26 /*1*/  'int' => dict[
  27        0 => 'zero',
  28        1 => 'one',
  29        12345 => 'positive',
  30        -2345 => 'negative',
  31        ],
  32
  33        // empty data
  34 /*2*/ 'empty double quotes' => dict[
  35        "" => 'emptyd',
  36        ],
  37
  38 /*3*/  'empty single quotes' => dict[
  39        '' => 'emptys',
  40        ],
  41
  42        // string data
  43 /*4*/  'string' => dict[
  44        "stringd" => 'stringd',
  45        'strings' => 'strings',
  46        $heredoc => 'stringh',
  47        ],
  48 ];
  49
  50 // loop through each element of $inputs to check the behavior of array_merge
  51 $iterator = 1;
  52 foreach($inputs as $key => $input) {
  53   echo "\n-- Iteration $iterator: $key data --\n";
  54   var_dump( array_merge($input, $arr) );
  55   var_dump( array_merge($arr, $input) );
  56   $iterator++;
  57 };
  58
  59 echo "Done";
  60 }