hphp/test/zend/good/ext/standard/tests/array/usort_variation5.php

   1 <?hh
   2 /* Prototype  : bool usort(&array $array_arg, string $cmp_function)
   3  * Description: Sort an array by values using a user-defined comparison function
   4  * Source code: ext/standard/array.c
   5  */
   6
   7 /*
   8  * Pass arrays of string data to usort() to test how it is re-ordered
   9  */
  10
  11 function cmp_function($value1, $value2)
  12 {
  13   if($value1 == $value2) {
  14     return 0;
  15   }
  16   else if($value1 > $value2) {
  17     return 1;
  18   }
  19   else {
  20     return -1;
  21   }
  22 }
  23 <<__EntryPoint>> function main(): void {
  24 echo "*** Testing usort() : usage variation ***\n";
  25
  26 // Different heredoc strings to be sorted
  27 $empty_heredoc =<<<EOT
  28 EOT;
  29
  30 $simple_heredoc1 =<<<EOT
  31 Heredoc
  32 EOT;
  33
  34 $simple_heredoc2 =<<<EOT
  35 HEREDOC
  36 EOT;
  37
  38 $multiline_heredoc =<<<EOT
  39 heredoc string\twith!@# and 123
  40 Test this!!!
  41 EOT;
  42
  43 // Single quoted strings
  44 $single_quoted_values = array(
  45   0 => ' ',  1 => 'test', 3 => 'Hello', 4 => 'HELLO',
  46   5 => '',   6 => '\t',   7 => '0',     8 => '123Hello',
  47   9 => '\'', 10 => '@#$%'
  48 );
  49
  50 echo "\n-- Sorting Single Quoted String values --\n";
  51 var_dump( usort(inout $single_quoted_values, fun('cmp_function')) );
  52 var_dump($single_quoted_values);
  53
  54 // Double quoted strings
  55 $double_quoted_values = array(
  56   0 => " ",  1 => "test", 3 => "Hello", 4 => "HELLO",
  57   5 => "",   6 => "\t",   7 => "0",     8 => "123Hello",
  58   9 => "\"", 10 => "@#$%"
  59 );
  60
  61 echo "\n-- Sorting Double Quoted String values --\n";
  62 var_dump( usort(inout $double_quoted_values, fun('cmp_function')) );
  63 var_dump($double_quoted_values);
  64
  65 // Heredoc strings
  66 $heredoc_values = array(0 => $empty_heredoc,   1 => $simple_heredoc1,
  67                         2 => $simple_heredoc2, 3 => $multiline_heredoc);
  68
  69 echo "\n-- Sorting Heredoc String values --\n";
  70 var_dump( usort(inout $heredoc_values, fun('cmp_function')) );
  71 var_dump($heredoc_values);
  72 echo "===DONE===\n";
  73 }