数组问题，小弟初学，请各位大虾指点

<?php
//打印多维数组初始化和循环打印多维数组的语句段
$arrayFather = array(
                    array('a','b','c'),
array('d','e','f'),
array('g','h','i'));
for($i=0; $i<count($arrayFather); $i++){
    for($j=0; $j<count($arrayFather[$i]);$j++){
              echo [$i][$j] ."\n";
}
    echo "</br>";
}
?>上面一段话提示
Parse error: syntax error, unexpected '[' in D:\web\apache\htdocs\3.5.1.php on line 128
怎么回事呀？请指教