array_replace(3) [php man page]

ARRAY_REPLACE(3)							 1							  ARRAY_REPLACE(3)

array_replace - Replaces elements from passed arrays into the first array

SYNOPSIS

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

DESCRIPTION

       array_replace(3)  replaces  the values of $array1 with values having the same keys in each of 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 arrays overwriting the previous values.

       array_replace(3) is not recursive : it will replace values in the first array by whatever type is in the second array.

PARAMETERS

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

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

	      o $...
		- More arrays from which elements will be extracted. Values from later arrays overwrite the previous values.

RETURN VALUES

	Returns an array, or NULL if an error occurs.

EXAMPLES

       Example #1

	      array_replace(3) example

	      <?php
	      $base = array("orange", "banana", "apple", "raspberry");
	      $replacements = array(0 => "pineapple", 4 => "cherry");
	      $replacements2 = array(0 => "grape");

	      $basket = array_replace($base, $replacements, $replacements2);
	      print_r($basket);
	      ?>

	      The above example will output:

	      Array
	      (
		  [0] => grape
		  [1] => banana
		  [2] => apple
		  [3] => raspberry
		  [4] => cherry
	      )

SEE ALSO

       array_replace_recursive(3), array_merge(3).

PHP Documentation Group 													  ARRAY_REPLACE(3)

ARRAY_DIFF_ASSOC(3)							 1						       ARRAY_DIFF_ASSOC(3)

array_diff_assoc - Computes the difference of arrays with additional index check

SYNOPSIS

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

DESCRIPTION

	Compares $array1 against $array2 and returns the difference. Unlike array_diff(3) the array keys are also used in the comparison.

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 values from $array1 that are not present in any of the other arrays.

EXAMPLES

       Example #1

	      array_diff_assoc(3) example

	       In  this  example  you  see  the  "a" => "green" pair is present in both arrays and thus it is not in the output from the function.
	      Unlike this, the pair 0 => "red" is in the output because in the second argument "red" has key which is 1.

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

	      The above example will output:

	      Array
	      (
		  [b] => brown
		  [c] => blue
		  [0] => red
	      )

       Example #2

	      array_diff_assoc(3) example

	       Two values from key => value pairs are considered equal only if (string) $elem1 === (string) $elem2 . In other words a strict check
	      takes place so the string representations must be the same.

	      <?php
	      $array1 = array(0, 1, 2);
	      $array2 = array("00", "01", "2");
	      $result = array_diff_assoc($array1, $array2);
	      print_r($result);
	      ?>

	      The above example will output:

	      Array
	      (
		  [0] => 0
		  [1] => 1
		  )

NOTES

       Note

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

       Note

	       Ensure you pass arguments in the correct order when comparing similar arrays with more keys. The new array should be the  first	in
	      the list.

SEE ALSO

       array_diff(3), array_diff_uassoc(3), array_udiff_assoc(3), array_udiff_uassoc(3), array_intersect(3), array_intersect_assoc(3).

PHP Documentation Group 												       ARRAY_DIFF_ASSOC(3)