PHP Help Needed

<?php
$FILE_PATH = "CombatLog.txt";

final class DataObject
{
        public $Time;           /* Time */
        public $Action;         /* Action number */
        public $Character;      /* Character name */
        public $Target;         /* Target name */
        public $Entropy;                /* Damage or healing dealt */
        public $Comment;                /* Text comment data */
}

class FileParser
{
        public static function ParseFileIntoLines( $filePath )
        {
                $lines = file( $filePath );

                if ( !$lines )
                {
                        echo 'Failed to parse the file.';
                        exit;
                }
        
                return $lines;
        }

        public static function ParseLinesToDataObjects( $lines )
        {
                if ( !is_array( $lines ) )
                {
                        trigger_error( '$lines was not a valid array', E_USER_ERROR );
                        return NULL;
                }

                $dataObjects = array();
                $tmp = NULL;

                foreach ( $lines as $line )
                {
                        $tmp = self::GetDataObject( $line );

                        if ( $tmp )
                        {
                                $dataObjects[] = $tmp;
                        }
                }

                return $dataObjects;
        }

        public static function GetDataObject( $line )
        {
                if ( $line )
                {
                        $data = new DataObject();

                        /* Get the first paren '(' from the string */
                        $position = stripos( $line, '(' );

                        if ( $position === FALSE )
                        {
                                return NULL;                    
                        }

                        /* All data before the first paren is the time */
                        $data->Time = rtrim( trim( substr( $line, 0, $position ) ), ':' );

                        /* Get the position of the last paren ')' so we know what we're parsing here */
                        $lastPosition = strripos( $line, ')' );

                        if ( $lastPosition === FALSE )
                        {
                                return NULL;
                        }

                        /* Get the text between the parens */
                        $inner = trim( substr( $line, $position + 1, $lastPosition - 1 ) );

                        /* Condense the commas */
                        $inner = str_replace( ' , ', ',', $inner );

                        /* Split the data by the commas */
                        $split = explode( ',', $inner ); 

                        $data->Action        = ( int ) $split[0];
                        $data->Character     = $split[5];
                        $data->Target        = $split[6];
                        $data->Entropy       = ( int ) $split[7];

                        /* All data after the last paren is the 'comment' */
                        $data->Comment = trim( substr( $line, $lastPosition + 1 ) );

                        return $data;
                }

                return NULL;
        }
}

/******************************************
* USAGE 
*******************************************/
$lines = FileParser::ParseFileIntoLines( $FILE_PATH );
$data  = FileParser::ParseLinesToDataObjects( $lines );

var_dump( $data );
?>