有两个表格。一个表格包含玩家信息,如名字和等级。另一张表包含游戏替代信息。如何拼合MySQL结果
输出应该是这样的:
Rank| Player Name | Period 1 position | Period 2 Position| Period 3 Position |
球员表取样
|ID| Name | Rank |
|1 | Fred | 10 |
|2 | Dan | 12 |
|3 | Mike | 15 |
位置表样品
|ID| Game_ID | Player_ID | Period | Position |
|1 | 12 | 1 | 1 | Striker Right|
|2 | 12 | 1 | 2 | Mid Center |
|3 | 12 | 2 | 1 | Striker Left |
下面的代码把它弄出来的MySQL
的我试过各种方法来变换返回的数据集。
$players_sql = "SELECT position.id as position_id,
player.rank,
player.first_name,
position.period,
position.position
FROM player
INNER JOIN position
on player.id = position.player_id
ORDER BY player.rank, position.period;";
if ($result = $mysqli->query($players_sql)) {
// printf("Select returned %d rows.\n", mysqli_num_rows($result));
/* fetch associative array */
while ($row = $result->fetch_assoc()) {
$subs[$row["position_id"]] = [
"rank" => $row["rank"],
"first_name" => $row["first_name"],
"period" => $row["period"],
"position" => $row["position"]
];
}
mysqli_free_result($result);
}
// collapse players This works
foreach ($subs as $sub) {
$players_by_rank[$sub["rank"]] = $sub["first_name"];
}
后来的数据是数据以用户可以提交的形式显示。下面的代码与上面的代码不匹配。下面的代码使用静态定义的数组,其中预填充的数据不是来自数据库。它提供了一种可视化输出结果的方式。在下面的代码示例中,总共有4个周期分为4列,最后是总结列。必须有一个简单的方法来压扁这些数据!
<?php
for ($sub = 1; $sub < $sub_info . length; $sub++) {
?>
<tr>
<td><?php echo $sub_info[sub] ?></td>
<td><input type = "text"
name = "p<?php echo $player; ?>"
value = "<?php echo $names[$player - 1]; ?>"
id = "p<?php echo $player; ?>" ></td>
<?php
for ($period = 1; $period < $periods + 1; $period++) {
?>
<td>
<div class="form-group">
<select onchange="calTotals(<?php echo $player . ',' . $period; ?>)"
id="<?php echo "p{$player}p{$period}"; ?>"
name="<?php echo "p{$player}p{$period}"; ?>">
<?php
$output = "";
for ($i = 0; $i < $players_on_field + 1; $i++) {
$output = "<option";
if ($i == 0) {
$output .= ' selected';
}
$output .= ">$i</option>";
echo $output;
}
?>
</select>
</div>
</td>
<?php } ?> <!-- Periods -->
<td><!-- total periods in game using JavaScript -->
<input type="text"
name="<?php echo "periods{$player}"; ?>"
id="<?php echo "periods{$player}"; ?>">
</td>
</tr>
<?php } ?> <!-- players -->
我觉得你就要成功了。 $期间在哪里定义? – Strawberry