php – mysqli_query,mysqli_fetch_array和while循环

我现在要做的是从数据库“portal”列出我的表“property”的内容,并用结果填充表格.

我正在使用mysqli_query,mysqli_fetch_array和while循环.我收到以下错误：

Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result,
boolean given in C:xampphtdocsfalconportalformsedit listing.php
on line 15

session_start();
require_once "connect_to_mysql.php"; // where i store username and password to access    my db.

$sqlCommand = "SELECT * property FROM portal"; // dbname: portal - table: propery
$query = mysqli_query($myConnection,$sqlCommand);

$Displayproperty = '';
while ($row = mysqli_fetch_array($query))
$id = $row["pid"];
$title = $row["ptitle"];
$area = $row["parea"];
$city = $row["pcity"];
$Displayproperty .= '<table width="500" border="0" cellspacing="0" cellpadding="1">
<tr>
<td>' . $id . '</td>
<td>' . $title . '</td>
<td>' . $area . '</td>
<td>' . $city . '</td>
<td><a href="forms.php?pid=' . $id . '">Upload images</a><br /></td>
</tr>
</table>';