array_replace_recursive(3) [php man page]

ARRAY_REPLACE_RECURSIVE(3)						 1						ARRAY_REPLACE_RECURSIVE(3)

array_replace_recursive - Replaces elements from passed arrays into the first array recursively

SYNOPSIS

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

DESCRIPTION

       array_replace_recursive(3) replaces the values of $array1 with the same values from all the following arrays. If a key from the first array
       exists in the second array, its value will be replaced by the value from the second array. If the key exists in the second array,  and  not
       the  first,  it	will  be created in the first array. If a key only exists in the first array, it will be left as is. If several arrays are
       passed for replacement, they will be processed in order, the later array overwriting the previous values.

       array_replace_recursive(3) is recursive : it will recurse into arrays and apply the same process to the inner value.

	When the value in $array1 is scalar, it will be replaced by the value in $array2, may it be scalar or array. When the value in $array1 and
       $array2 are both arrays, array_replace_recursive(3) will replace their respective value recursively.

PARAMETERS

	      o $array1
		- The array in which elements are replaced.

	      o $array2
		- The array from which elements will be extracted.

	      o $...
		- Optional. More arrays from which elements will be extracted.

RETURN VALUES

	Returns an array, or NULL if an error occurs.

EXAMPLES

       Example #1

	      array_replace_recursive(3) example

	      <?php
	      $base = array('citrus' => array( "orange") , 'berries' => array("blackberry", "raspberry"), );
	      $replacements = array('citrus' => array('pineapple'), 'berries' => array('blueberry'));

	      $basket = array_replace_recursive($base, $replacements);
	      print_r($basket);

	      $basket = array_replace($base, $replacements);
	      print_r($basket);
	      ?>

	      The above example will output:

	      Array
	      (
		  [citrus] => Array
		      (
			  [0] => pineapple
		      )

		  [berries] => Array
		      (
			  [0] => blueberry
			  [1] => raspberry
		      )

	      )
	      Array
	      (
		  [citrus] => Array
		      (
			  [0] => pineapple
		      )

		  [berries] => Array
		      (
			  [0] => blueberry
		      )

	      )

       Example #2

	      array_replace_recursive(3) and recursive behavior

	      <?php
	      $base = array('citrus' => array("orange") , 'berries' => array("blackberry", "raspberry"), 'others' => 'banana' );
	      $replacements = array('citrus' => 'pineapple', 'berries' => array('blueberry'), 'others' => array('litchis'));
	      $replacements2 = array('citrus' => array('pineapple'), 'berries' => array('blueberry'), 'others' => 'litchis');

	      $basket = array_replace_recursive($base, $replacements, $replacements2);
	      print_r($basket);

	      ?>

	      The above example will output:

	      Array
	      (
		  [citrus] => Array
		      (
			  [0] => pineapple
		      )

		  [berries] => Array
		      (
			  [0] => blueberry
			  [1] => raspberry
		      )

		  [others] => litchis
	      )

SEE ALSO

       array_replace(3), array_merge_recursive(3).

PHP Documentation Group 												ARRAY_REPLACE_RECURSIVE(3)

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ARRAY_DIFF_KEY(3)							 1							 ARRAY_DIFF_KEY(3)

array_diff_key - Computes the difference of arrays using keys for comparison

SYNOPSIS

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

DESCRIPTION

	Compares  the  keys  from $array1 against the keys from $array2 and returns the difference. This function is like array_diff(3) except the
       comparison is done on the keys instead of the values.

PARAMETERS

	      o $array1
		- The array to compare from

	      o $array2
		- An array to compare against

	      o $...
		- More arrays to compare against

RETURN VALUES

	Returns an array containing all the entries from $array1 whose keys are not present in any of the other arrays.

EXAMPLES

       Example #1

	      array_diff_key(3) example

	       The two keys from the key => value pairs are considered equal only if (string) $key1 === (string) $key2 . In other words  a  strict
	      type check is executed so the string representation must be the same.

	      <?php
	      $array1 = array('blue'  => 1, 'red'  => 2, 'green'  => 3, 'purple' => 4);
	      $array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan'	 => 8);

	      var_dump(array_diff_key($array1, $array2));
	      ?>

	      The above example will output:

	      array(2) {
		["red"]=>
		int(2)
		["purple"]=>
		int(4)
	      }

NOTES

       Note

	       This  function  only  checks  one  dimension  of  a  n-dimensional  array.  Of  course  you  can  check	deeper dimensions by using
	      array_diff_key($array1[0], $array2[0]);.

SEE ALSO

       array_diff(3), array_udiff(3), array_diff_assoc(3), array_diff_uassoc(3), array_udiff_assoc(3), array_udiff_uassoc(3),  array_diff_ukey(3),
       array_intersect(3), array_intersect_assoc(3), array_intersect_uassoc(3), array_intersect_key(3), array_intersect_ukey(3).

PHP Documentation Group 													 ARRAY_DIFF_KEY(3)

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array_replace_recursive(3) [php man page]

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