关于二维数组。解决办法

关于二维数组。

	$group1 = array(
            ("name"=>"zs","age"=>"10","sex"=>"nan"),
            ("name"=>"zs","age"=>"10","sex"=>"nan"),
            ("name"=>"zs","age"=>"10","sex"=>"nan"),
            ("name"=>"ls","age"=>"11","sex"=>"nan"),
            ("name"=>"ww","age"=>"12","sex"=>"nv"),
            ("name"=>"ls","age"=>"11","sex"=>"nan"),
            ("name"=>"ww","age"=>"12","sex"=>"nv"),
            ("name"=>"ls","age"=>"11","sex"=>"nan"),
            ("name"=>"ww","age"=>"12","sex"=>"nv")
	);

	echo '';
	echo '';
		foreach( $row as $col ){
			echo '';
		}
		echo '';
	}
	echo '数组转化为表格';

	foreach( $group as $row ){
		echo '{$col}
';
?>

数组转化为表格
{$col}

这样写为何不对？
------解决方案--------------------

	$group = array(
            array("name"=>"zs","age"=>"10","sex"=>"nan"),
            array("name"=>"zs","age"=>"10","sex"=>"nan"),
            array("name"=>"zs","age"=>"10","sex"=>"nan"),
            array("name"=>"ls","age"=>"11","sex"=>"nan"),
            array("name"=>"ww","age"=>"12","sex"=>"nv"),
            array("name"=>"ls","age"=>"11","sex"=>"nan"),
            array("name"=>"ww","age"=>"12","sex"=>"nv"),
            array("name"=>"ls","age"=>"11","sex"=>"nan"),
            array("name"=>"ww","age"=>"12","sex"=>"nv")
	);

	echo '';
	echo '';
		foreach( $row as $col ){
			echo "";
		}
		echo '';
	}
	echo '数组转化为表格';

	foreach( $group as $row ){
		echo '{$col}
';