[英]PHP and MySQL: Number of rows returned
如何查看以下查詢返回的行數?
mysql_select_db($database_aoldatabase, $aoldatabase);
$query1 = "select * from sale where secid = $invoiceno ";
$query2 = "select * from sale where secid = $invoiceno ";
$maxa = mysql_query ($query1)
or die ("Query '$query' failed with error message: \"" . mysql_error () . '"');
$maxa2 = mysql_query ($query2)
or die ("Query '$query' failed with error message: \"" . mysql_error () . '"');
$row = mysql_fetch_array($maxa);
$row2 = mysql_fetch_array($maxa2);
像Michiel說的那樣, mysql_num_rows()
完成這項工作。 但是如果你想使用數組使用多行,你也可以使用count()
。
$data = array();
while($row = mysql_fetch_array($maxa, MYSQL_ASSOC)) {
$data[] = $row;
}
$count1 = mysql_num_rows($maxa);
$count2 = count($data);
使用函數mysql_num_rows()
看看: http : //nl3.php.net/manual/en/function.mysql-num-rows.php
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