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<?php
/**
* This class works like an array.
* The internal array is constructed from a comma separated string
* When used in an string context, it is automatically converted to a comma
* separated string
*
* Usage:
* @code
* $csvarray = new CSVArrayObject('eins,zwei,drei');
* $csvarray[] = 'vier';
* echo $csvarray; // prints out "eins,zwei,drei,vier"
* @endcode
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* @author André Noack <noack@data-quest.de>
* @link http://www.php.net/manual/en/class.arrayobject.php
*/
class CSVArrayObject extends StudipArrayObject
{
/**
* Construct an array object from a string of comma separated items
*
* @param string $input a string of comma separated items
*/
function __construct($input)
{
if (is_string($input)) {
$input = mb_strlen($input) ? array_map('trim', explode(',', $input)) : [];
}
parent::__construct((array)$input);
}
/**
* magic method for use of object in string context
*
* @return string internal array itmes converted to a comma separated list
*/
function __toString()
{
return implode(',', $this->getArrayCopy());
}
}
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