我有这张桌子:
option_values table:
option_id (FK)
value_id (PK)
classified_id (FK)
value
示例:
option_id (FK) value_id (PK) classified_id (FK) value
1 1 22 'Petrol'
2 2 22 'Manual'
3 3 22 'Black'
如何检索和回显使用classified_id = 22找到的每个值?
我试过这个:
$res=mysql_query("SELECT * FROM option_values WHERE classified_id=22");
$row = mysql_fetch_row($res);
echo $row[3]; // This displays 'Petrol'
但是我怎样才能显示'手动','黑'等?
由于
答案 0 :(得分:3)
使用它,你需要得到一个行数组......他们这样做的方法是在数组中给你一行的值。
while ($row = mysql_fetch_array($result, MYSQL_NUM)) {
printf("ID: %s Value: %s", $row[0], $row[3]);
}
来源:here
答案 1 :(得分:0)
$res=mysql_query("SELECT * FROM option_values WHERE classified_id=22");
while(FALSE != ($row = mysql_fetch_row($res)) {
echo $row[3];
}
答案 2 :(得分:0)
$res=mysql_query("SELECT * FROM option_values WHERE classified_id=22");
while($row = mysql_fetch_array($res))
{
echo $row[1];
echo $row[2];
echo $row[3];
}
答案 3 :(得分:0)
帮自己一个忙,并实现一个像这样的辅助函数:
function fetch_multi_rows($query)
{
$rows = array();
while ( $row = mysql_fetch_array($result) )
$rows[] = $row;
return $rows;
}
// Use it like this
$my_rows = fetch_multi_rows(...your query...);
foreach ( $my_rows as $row )
echo $row[3];
干杯!
答案 4 :(得分:0)
您可以编写“更面向对象”的代码,例如::)
// Execute the query $res = mysql_query("SELECT * FROM option_values WHERE classified_id=22"); // Check for empty result if (mysql_num_rows($result) == 0) { echo "No results."; exit; } // Fetch results as objects while ($row = mysql_fetch_object($result)) { echo "Option Id: ".$row->option_id; echo "Value: ".$row->value; } // Free results memory mysql_free_result($result);
干杯伴侣!