array_intersect_assoc(3) [php man page]

ARRAY_INTERSECT_ASSOC(3)						 1						  ARRAY_INTERSECT_ASSOC(3)

array_intersect_assoc - Computes the intersection of arrays with additional index check

SYNOPSIS

       array array_intersect_assoc (array  $array1, array  $array2, [array  $...])

DESCRIPTION

       array_intersect_assoc(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
		- The array with master values to check.

	      o $array2
		- An array to compare values against.

	      o $...
		- A variable list of arrays to compare.

RETURN VALUES

	Returns an associative array containing all the values in $array1 that are present in all of the arguments.

EXAMPLES

       Example #1

	      array_intersect_assoc(3) example

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

	      The above example will output:

	      Array
	      (
		  [a] => green
	      )

	In our example you see that only the pair "a" => "green" is present in both arrays and thus is returned. The value "red" is  not  returned
       because in $array1 its key is 0 while the key of "red" in $array2 is 1, and the key "b" is not returned because its values are different in
       each array.

	The two values from the key => value pairs are considered equal only if (string) $elem1 === (string) $elem2 . In other words a strict type
       check is executed so the string representation must be the same.

SEE ALSO 
array_intersect(3), array_uintersect_assoc(3), array_intersect_uassoc(3), array_uintersect_uassoc(3), array_diff(3), array_diff_assoc(3).

PHP Documentation Group 												  ARRAY_INTERSECT_ASSOC(3)

ARRAY_UDIFF_UASSOC(3)							 1						     ARRAY_UDIFF_UASSOC(3)

array_udiff_uassoc - Computes the difference of arrays with additional index check, compares data and indexes by a callback function

SYNOPSIS

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

DESCRIPTION

	Computes the difference of arrays with additional index check, compares data and indexes by a callback function.

	Note that the keys are used in the comparison unlike array_diff(3) and array_udiff(3).

PARAMETERS

	      o $array1
		- The first array.

	      o $array2
		- The second array.

	      o $value_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)

	      o $key_compare_func
		- The comparison of keys (indices) is done also by  the  callback  function  $key_compare_func.  This  behaviour  is  unlike  what
		array_udiff_assoc(3) does, since the latter compares the indices by using an internal function.

RETURN VALUES

	Returns an array containing all the values from $array1 that are not present in any of the other arguments.

EXAMPLES

       Example #1

	      array_udiff_uassoc(3) example

	      <?php
	      class cr {
		  private $priv_member;
		  function cr($val)
		  {
		      $this->priv_member = $val;
		  }

		  static function comp_func_cr($a, $b)
		  {
		      if ($a->priv_member === $b->priv_member) return 0;
		      return ($a->priv_member > $b->priv_member)? 1:-1;
		  }

		  static function comp_func_key($a, $b)
		  {
		      if ($a === $b) return 0;
		      return ($a > $b)? 1:-1;
		  }
	      }
	      $a = array("0.1" => new cr(9), "0.5" => new cr(12), 0 => new cr(23), 1=> new cr(4), 2 => new cr(-15),);
	      $b = array("0.2" => new cr(9), "0.5" => new cr(22), 0 => new cr(3), 1=> new cr(4), 2 => new cr(-15),);

	      $result = array_udiff_uassoc($a, $b, array("cr", "comp_func_cr"), array("cr", "comp_func_key"));
	      print_r($result);
	      ?>

	      The above example will output:

	      Array
	      (
		  [0.1] => cr Object
		      (
			  [priv_member:private] => 9
		      )

		  [0.5] => cr Object
		      (
			  [priv_member:private] => 12
		      )

		  [0] => cr Object
		      (
			  [priv_member:private] => 23
		      )
	      )

	In  our example above you see the "1" => new cr(4) pair is present in both arrays and thus it is not in the output from the function. Keep
       in mind that you have to supply 2 callback functions.

NOTES

       Note

	       Please note that this function only checks one dimension of a n-dimensional array. Of course you can  check  deeper  dimensions	by
	      using, for example, array_udiff_uassoc($array1[0], $array2[0], "data_compare_func", "key_compare_func");.

SEE ALSO

       array_diff(3),  array_diff_assoc(3),  array_udiff(3),  array_udiff_assoc(3),  array_intersect(3),  array_intersect_assoc(3),  array_uinter-
       sect(3), array_uintersect_assoc(3), array_uintersect_uassoc(3).

PHP Documentation Group 												     ARRAY_UDIFF_UASSOC(3)