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14 years ago
Yet another attempt a wheel re-invention, using match with offsets rather than split...

<?php
function unserializesession( $data )
{
    if(  strlen( $data) == 0)
    {
        return array();
    }
    
    // match all the session keys and offsets
    preg_match_all('/(^|;|\})([a-zA-Z0-9_]+)\|/i', $data, $matchesarray, PREG_OFFSET_CAPTURE);

    $returnArray = array();

    $lastOffset = null;
    $currentKey = '';
    foreach ( $matchesarray[2] as $value )
    {
        $offset = $value[1];
        if(!is_null( $lastOffset))
        {
            $valueText = substr($data, $lastOffset, $offset - $lastOffset );
            $returnArray[$currentKey] = unserialize($valueText);
        }
        $currentKey = $value[0];

        $lastOffset = $offset + strlen( $currentKey )+1;
    }

    $valueText = substr($data, $lastOffset );
    $returnArray[$currentKey] = unserialize($valueText);
    
    return $returnArray;
}
?>
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