uksort(3) [php man page]

UKSORT(3)								 1								 UKSORT(3)

uksort - Sort an array by keys using a user-defined comparison function

SYNOPSIS

       bool uksort (array  &$array, callable  $key_compare_func)

DESCRIPTION

       uksort(3)  will	sort  the  keys of an array using a user-supplied comparison function. If the array you wish to sort needs to be sorted by
       some non-trivial criteria, you should use this function.

PARAMETERS

	      o $array
		- The input array.

	      o $key_compare_func
		- The comparison function must return an integer less than, equal to, or greater than zero if the first argument is considered	to
		be respectively less than, equal to, or greater than the second.
		int callback (mixed  $a, mixed	$b)

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       Example #1

	      uksort(3) example

	      <?php
	      function cmp($a, $b)
	      {
		  $a = preg_replace('@^(a|an|the) @', '', $a);
		  $b = preg_replace('@^(a|an|the) @', '', $b);
		  return strcasecmp($a, $b);
	      }

	      $a = array("John" => 1, "the Earth" => 2, "an apple" => 3, "a banana" => 4);

	      uksort($a, "cmp");

	      foreach ($a as $key => $value) {
		  echo "$key: $value
";
	      }
	      ?>

	      The above example will output:

	      an apple: 3
	      a banana: 4
	      the Earth: 2
	      John: 1

SEE ALSO

       usort(3), The comparison of array sorting functions.

PHP Documentation Group 														 UKSORT(3)

ARRAY_INTERSECT_UASSOC(3)						 1						 ARRAY_INTERSECT_UASSOC(3)

array_intersect_uassoc - Computes the intersection of arrays with additional index check, compares indexes by a callback function

SYNOPSIS

       array array_intersect_uassoc (array  $array1, array  $array2, [array  $...], callable  $key_compare_func)

DESCRIPTION

       array_intersect_uassoc(3)  returns  an array containing all the values of $array1 that are present in all the arguments. Note that the keys
       are used in the comparison unlike in array_intersect(3).

PARAMETERS

	      o $array1
		- Initial array for comparison of the arrays.

	      o $array2
		- First array to compare keys against.

	      o $...
		- Variable list of array arguments to compare values against.

	      o $key_compare_func
		- The comparison function must return an integer less than, equal to, or greater than zero if the first argument is considered	to
		be respectively less than, equal to, or greater than the second.
		int callback (mixed  $a, mixed	$b)

RETURN VALUES

	Returns the values of $array1 whose values exist in all of the arguments.

EXAMPLES

       Example #1

	      array_intersect_uassoc(3) example

	      <?php
	      $array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
	      $array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");

	      print_r(array_intersect_uassoc($array1, $array2, "strcasecmp"));
	      ?>

	      The above example will output:

	      Array
	      (
		  [b] => brown
	      )

SEE ALSO

       array_intersect(3),  array_intersect_assoc(3),  array_uintersect_assoc(3), array_uintersect_uassoc(3), array_intersect_key(3), array_inter-
       sect_ukey(3).

PHP Documentation Group 												 ARRAY_INTERSECT_UASSOC(3)