Question

我在网页上打印出具有以下内容的用户和头像代码但希望还将用户余额添加到输出中这是在另一个表..两个表共享用户虽然在余额表中有未注册的用户在用户信息表

中

表userinfo

              user                  |        avatar        |

 ------------------------------------------------------------

 29758b15-e021-4b3b-aad7-088b3843a9f6|     Neido Toxx       |

 313b96f2-b9f1-4c8b-a3d0-5997d9a7bc1c|     Marla Abbot      |

 98fde03e-377b-4b51-8ad6-6fb492e75298|     Captian Grid     |

表余额

              user                  |        balance        |

 ------------------------------------------------------------

 29758b15-e021-4b3b-aad7-088b3843a9f6|         1000         |

 313b96f2-b9f1-4c8b-a3d0-5997d9a7bc1c|            0         |

 98fde03e-377b-4b51-8ad6-6fb492e75298|         2500         |

 abcde03e-377b-4b51-8ad6-6fb492e75298|            0         |





$result = mysql_query("SELECT user,avatar FROM userinfo");
if (!$result) {
die("Query to show fields from table failed");
}
$fields_num = mysql_num_fields($result);
echo "<table><tr >";
// printing table headers
for($i=0; $i<$fields_num; $i++)
{
    $field = mysql_fetch_field($result);
    echo " <td>{$field->name}</td>";
}
echo "</tr>\n";
// printing table rows
while($row = mysql_fetch_row($result))
{
    echo "<tr>";
    // $row is array... foreach( .. ) puts every element
    // of $row to $cell variable
    foreach($row as $cell)
        echo "<td>$cell</font></td>";
    echo "</tr>\n";
}
mysql_free_result($result);

Answer 1

select balance.user, info.avatar, balance.balance 
from user_balance balance
left join user_info info on info.user = balance.user

在另一个表中查找结果并在网页上打印出来

1 个答案: