array_reverse(3) [php man page]

ARRAY_REVERSE(3)							 1							  ARRAY_REVERSE(3)

array_reverse - Return an array with elements in reverse order

SYNOPSIS

       array array_reverse (array  $array, [bool  $preserve_keys = false])

DESCRIPTION

	Takes an input $array and returns a new array with the order of the elements reversed.

PARAMETERS

	      o $array
		- The input array.

	      o $preserve_keys
		- If set to TRUE numeric keys are preserved. Non-numeric keys are not affected by this setting and will always be preserved.

RETURN VALUES

	Returns the reversed array.

EXAMPLES

       Example #1

	      array_reverse(3) example

	      <?php
	      $input  = array("php", 4.0, array("green", "red"));
	      $reversed = array_reverse($input);
	      $preserved = array_reverse($input, true);

	      print_r($input);
	      print_r($reversed);
	      print_r($preserved);
	      ?>

	      The above example will output:

	      Array
	      (
		  [0] => php
		  [1] => 4
		  [2] => Array
		      (
			  [0] => green
			  [1] => red
		      )

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

		  [1] => 4
		  [2] => php
	      )
	      Array
	      (
		  [2] => Array
		      (
			  [0] => green
			  [1] => red
		      )

		  [1] => 4
		  [0] => php
	      )

SEE ALSO

       array_flip(3).

PHP Documentation Group 													  ARRAY_REVERSE(3)

ARRAY_FLIP(3)								 1							     ARRAY_FLIP(3)

array_flip - Exchanges all keys with their associated values in an array

SYNOPSIS

       array array_flip (array	$array)

DESCRIPTION

       array_flip(3) returns an array in flip order, i.e. keys from $array become values and values from $array become keys.

	Note  that the values of $array need to be valid keys, i.e. they need to be either integer or string. A warning will be emitted if a value
       has the wrong type, and the key/value pair in question will not be included in the result.

	If a value has several occurrences, the latest key will be used as its value, and all others will be lost.

PARAMETERS

	      o $array
		- An array of key/value pairs to be flipped.

RETURN VALUES

	Returns the flipped array on success and NULL on failure.

EXAMPLES

       Example #1

	      array_flip(3) example

	      <?php
	      $input = array("oranges", "apples", "pears");
	      $flipped = array_flip($input);

	      print_r($flipped);
	      ?>

	      The above example will output:

	      Array
	      (
		  [oranges] => 0
		  [apples] => 1
		  [pears] => 2
	      )

       Example #2

	      array_flip(3) example : collision

	      <?php
	      $input = array("a" => 1, "b" => 1, "c" => 2);
	      $flipped = array_flip($input);

	      print_r($flipped);
	      ?>

	      The above example will output:

	      Array
	      (
		  [1] => b
		  [2] => c
	      )

SEE ALSO

       array_values(3), array_keys(3), array_reverse(3).

PHP Documentation Group 													     ARRAY_FLIP(3)