hphp/test/zend/good/ext-standard-array/uasort_basic1.php

   1 <?php
   2 /* Prototype  : bool uasort(array $array_arg, string $cmp_function)
   3  * Description: Sort an array with a user-defined comparison function and maintain index association
   4  * Source code: ext/standard/array.c
   5 */
   6
   7 echo "*** Testing uasort() : basic functionality ***\n";
   8
   9 // comparison function
  10 /* Prototype : int cmp(mixed $value1, mixed $value2)
  11  * Parameters : $value1 and $value2 - values to be compared
  12  * Return value : 0 - if both values are same
  13  *                1 - if value1 is greater than value2
  14  *               -1 - if value1 is less than value2
  15  * Description : compares value1 and value2
  16  */
  17 function cmp($value1, $value2)
  18 {
  19   if($value1 == $value2) {
  20     return 0;
  21   }
  22   else if($value1 > $value2) {
  23     return 1;
  24   }
  25   else
  26     return -1;
  27 }
  28
  29 // Int array with default keys
  30 $int_values = array(1, 8, 9, 3, 2, 6, 7);
  31 echo "-- Numeric array with default keys --\n";
  32 var_dump( uasort($int_values, 'cmp') );
  33 var_dump($int_values);
  34
  35 // String array with default keys
  36 $string_values = array("This", "is", 'a', "test");
  37 echo "-- String array with default keys --\n";
  38 var_dump( uasort($string_values, 'cmp') );
  39 var_dump($string_values);
  40
  41 // Associative array with numeric keys
  42 $numeric_key_arg = array(1=> 1, 2 => 2, 3 => 7, 5 => 4, 4 => 9);
  43 echo "-- Associative array with numeric keys --\n";
  44 var_dump( uasort($numeric_key_arg, 'cmp') );
  45 var_dump($numeric_key_arg);
  46
  47 // Associative array with string keys
  48 $string_key_arg = array('one' => 4, 'two' => 2, 'three' => 1, 'four' => 10);
  49 echo "-- Associative array with string keys --\n";
  50 var_dump( uasort($string_key_arg, 'cmp') );
  51 var_dump($string_key_arg);
  52
  53 echo "Done"
  54 ?>