<?
###################################################################
##
## Array tweaker class
## by Holger Bahr, Waldorf GmbH
##
## ... for unique sounding electronic music gear visit us at:
## http://www.waldorf-music.de
##
## you can use this class if you want to
##
## - delete elements of your arrays
## - insert elements to your arrays
## - move an element of your arrays to another position
## - replace an element of your array
##
## You can delete this stupid header if you use the class
## in your software. When you add some functionality or
## something, please drop me a line to [email protected]
##
###################################################################
class tweak_array
{
var $error_l = '<p><b>Warning:</b> Check your input parameters in your call to <i><b>';
var $error_r = '</b></i></p>';
function insert($array = '', $position = '' , $elements= '')
{
if ($position == '' || $array == '' || $elements == '' || $position < 1 || $position > count($array)+1)
{
echo $this->error_l."insert".$this->error_r;
}
else
{
$left = array_slice ($array, 0, $position-1);
$right = array_slice ($array, $position-1);
$insert = explode ('\,', $elements);
$array = array_merge ($left, $insert, $right);
unset($left, $right, $insert);
}
unset ($position, $elements);
return $array;
}
function delete($array = '', $from = '', $to='')
{
if ($to == '') $to = $from;
if ($array == '' || $from == '' || $to > count($array) || $to < 1 || $from > count($array))
{
echo $this->error_l."delete".$this->error_r;
}
elseif ($to < $from)
{
echo '<p><b>Warning:</b> you provided wrong parameter relationship to <b><i>delete</i></b></p>';
}
else
{
$left = array_slice ($array, 0, $from-1);
$right = array_slice ($array, $to);
$array = array_merge ($left, $right);
unset ($left, $right);
}
unset ($from, $to);
return $array;
}
function move($array = '', $from = '', $to = '')
{
if ($array == ''|| $from == ''|| $to == '' || $to > count($array) || $to < 1 || $from > count($array) || $from < 1)
{
echo $this->error_l."move".$this->error_r;
}
else
{
$hopper = $array[$from-1];
$array = $this->delete($array, $from);
$array = $this->insert($array, $to, $hopper);
}
unset ($hopper, $from, $to);
return $array;
}
function replace($array = '', $position = '', $new_element = ' ')
{
if ($array == '' || $position == '' || $position > count($array) || $position < 1)
{
echo $this->error_l."replace".$this->error_r;
}
else
{
$array = $this->insert($array, $position, $new_element);
$array = $this->delete($array, $position+count(explode('\,', $new_element)));
}
unset ($position, $new_element);
return $array;
}
}
###################################################################################
##
## Never forget the "\," when inserting multiple things into an existing single
## element and use implode() with the same separator "\," when you drop the
## whole content of an other array, into a single element (see Example).
##
## NEVER forget that an array starts with [0] and we say that 0 is the 1ST element.
##
###################################################################################
?>
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