SplitString.php

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<?php
/* Copyright (c) 2017 Stefan Hecken <stefan.hecken@concepts-and-training.de> Extended GPL, see docs/LICENSE */
 
namespace ILIAS\Transformation\Transformations;
 
use ILIAS\Transformation\Transformation;
 
class SplitString implements Transformation
{
    protected $delimiter;
 
    public function __construct($delimiter)
    {
        $this->delimiter = $delimiter;
    }
 
    public function transform($from)
    {
        if (!is_string($from)) {
            throw new \InvalidArgumentException(__METHOD__ . " the argument is not a string.");
        }
 
        return explode($this->delimiter, $from);
    }
 
    public function __invoke($from)
    {
        return $this->transform($from);
    }
}