reset(3) [php man page]

RESET(3)								 1								  RESET(3)

reset - Set the internal pointer of an array to its first element

SYNOPSIS

       mixed reset (array  &$array)

DESCRIPTION

       reset(3) rewinds $array's internal pointer to the first element and returns the value of the first array element.

PARAMETERS

	      o $array
		- The input array.

RETURN VALUES

	Returns the value of the first array element, or FALSE if the array is empty.

EXAMPLES

       Example #1

	      reset(3) example

	      <?php

	      $array = array('step one', 'step two', 'step three', 'step four');

	      // by default, the pointer is on the first element
	      echo current($array) . "<br />
"; // "step one"

	      // skip two steps
	      next($array);
	      next($array);
	      echo current($array) . "<br />
"; // "step three"

	      // reset pointer, start again on step one
	      reset($array);
	      echo current($array) . "<br />
"; // "step one"

	      ?>

SEE ALSO

       current(3), each(3), end(3), next(3), prev(3).

PHP Documentation Group 														  RESET(3)

EACH(3) 								 1								   EACH(3)

each - Return the current key and value pair from an array and advance the array cursor

SYNOPSIS

       array each (array  &$array)

DESCRIPTION

	Return the current key and value pair from an array and advance the array cursor.

	After each(3) has executed, the array cursor will be left on the next element of the array, or past the last element if it hits the end of
       the array. You have to use reset(3) if you want to traverse the array again using each.

PARAMETERS

	      o $array
		- The input array.

RETURN VALUES

	Returns the current key and value pair from the array $array. This pair is returned in a four-element array, with the keys 0, 1, key,  and
       value. Elements 0 and key contain the key name of the array element, and 1 and value contain the data.

	If the internal pointer for the array points past the end of the array contents, each(3) returns FALSE.

EXAMPLES

       Example #1

	      each(3) examples

	      <?php
	      $foo = array("bob", "fred", "jussi", "jouni", "egon", "marliese");
	      $bar = each($foo);
	      print_r($bar);
	      ?>

	      $bar now contains the following key/value pairs:

	      Array
	      (
		  [1] => bob
		  [value] => bob
		  [0] => 0
		  [key] => 0
	      )

       <?php
       $foo = array("Robert" => "Bob", "Seppo" => "Sepi");
       $bar = each($foo);
       print_r($bar);
       ?>

       $bar now contains the following key/value pairs:

       Array
       (
	   [1] => Bob
	   [value] => Bob
	   [0] => Robert
	   [key] => Robert
       )

       each(3) is typically used in conjunction with list(3) to traverse an array, here's an example:

       Example #2

	      Traversing an array with each(3)

	      <?php
	      $fruit = array('a' => 'apple', 'b' => 'banana', 'c' => 'cranberry');

	      reset($fruit);
	      while (list($key, $val) = each($fruit)) {
		  echo "$key => $val
";
	      }
	      ?>

	      The above example will output:

	      a => apple
	      b => banana
	      c => cranberry

       Caution

	       Because	assigning  an array to another variable resets the original array's pointer, our example above would cause an endless loop
	      had we assigned $fruit to another variable inside the loop.

       Warning

	      each(3) will also accept objects, but may return unexpected results. It's therefore not recommended to iterate though object proper-
	      ties with each(3).

SEE ALSO

       key(3), list(3), current(3), reset(3), next(3), prev(3), foreach, Object Iteration.

PHP Documentation Group 														   EACH(3)