hphp/test/zend/good/ext-standard-array/array_filter_variation6.php

   1 <?php
   2 /* Prototype  : array array_filter(array $input [, callback $callback])
   3  * Description: Filters elements from the array via the callback.
   4  * Source code: ext/standard/array.c
   5 */
   6
   7 /*
   8 * Passing 'input' array which contains elements as reference to other data
   9 */
  10
  11 echo "*** Testing array_filter() : usage variations - 'input' containing references ***\n";
  12
  13 // Callback function
  14 /* Prototype : bool callback(array $input)
  15  * Parameter : $input - array of which each element need to be checked in function
  16  * Return Type : returns true or false
  17  * Description : This function checks each element of an input array if element > 5 then
  18  * returns true else returns false
  19  */
  20 function callback($input)
  21 {
  22   if($input > 5) {
  23     return true;
  24   }
  25   else {
  26     return false;
  27   }
  28 }
  29
  30 // initializing variables
  31 $value1 = array(1, 2, 8);
  32 $value2 = array(5, 6, 4);
  33 $input = array(&$value1, 10, &$value2, 'value');
  34
  35 // with 'callback' argument
  36 var_dump( array_filter($input, 'callback') );
  37
  38 // with default 'callback' argument
  39 var_dump( array_filter($input) );
  40
  41 echo "Done"
  42 ?>