Php MySQL结果打印多个
在我的数据库中,我有一个一对多的表关系,其中一个家长可以有多个孩子。主键是父母的电子邮件。我想带孩子们去Php MySQL结果打印多个,php,mysql,Php,Mysql,在我的数据库中,我有一个一对多的表关系,其中一个家长可以有多个孩子。主键是父母的电子邮件。我想带孩子们去 $results1 = mysqli_query($con," SELECT directory.email , dirKids.kname , dirKids.kbirthday FROM directory JOIN dirKids ON '$row[email]' = dirKids.parent "); 然后我循环并echohtml页面中的
$results1 = mysqli_query($con,"
SELECT directory.email
, dirKids.kname
, dirKids.kbirthday
FROM directory
JOIN dirKids
ON '$row[email]' = dirKids.parent
");
然后我循环并echo
html页面中的值
while($row1 = mysqli_fetch_array($results1)) {
if (!empty($row1["kname"])) {
echo "<tr><td>". $row1["kname"] ."</td><td>".
$row1["kbirthday"]."</td></tr>";
}
}
while($row1=mysqli\u fetch\u数组($results1)){
如果(!empty($row1[“kname”])){
回显“$row1[“kname”]”。
$row1[“kbirthday”];
}
}
我遇到的问题是,我的数据库中只有一位家长有孩子,但它会打印孩子的名字和生日10次,因为我的数据库中有10个人。我怎样才能让它只打印一次孩子的名字和生日
我的完整代码如下所示:
<?php
$con = mysqli_connect("localhost", "username", "password", "db");
// Check connection
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$results = mysqli_query($con,"SELECT directory.id, directory.fname, directory.lname, directory.address, directory.bdname, directory.birthday, directory.cell, directory.email, directory.sFName, directory.sBirthday, directory.sCell, directory.sEmail FROM directory ORDER BY lname") or die ("couldn't fetch query");
echo "<div class='accordion' id='accordion'>";
// output data of each row
while($row = mysqli_fetch_array($results)) {
$results1 = mysqli_query($con,"SELECT directory.email, dirKids.kname, dirKids.kbirthday FROM directory JOIN dirKids ON '$row[email]' = dirKids.parent");
echo "</table></div>";
if ($row['sFName'] == "" || $row['sFName'] == "undefined") {
echo "<div class='card'><div class='card-header'
id='headingOne'><h5 class='mb-0'><button class='btn btn-link'
type='button' data-toggle='collapse' data-target='#collapse".
$row["id"] ."' aria-expanded='true' aria-controls='collapse".
$row["id"] . "'><h5>".$row["fname"] ."<span id='lnameText'>".
$row["lname"] ."</span></h5></button></h5></div><div
id='collapse". $row["id"] . "' class='collapse'
aria-labelledby='headingOne' data-parent='#accordion'><div
class='card-body'><table id='myUL' class='table'><tr></tr><tr>
<td><h5>Address</h5></td><td>". $row["address"] ."</td></tr>
<tr><td><h5>Birthday</h5></td><td>".$row["birthday"]."</td>
</tr><tr><td><h5>Cell</h5></td><td>". $row["cell"]."</td></tr>
<tr><td><h5>Email</h5></td><td>". $row["email"] ."</td></tr>
</table></div>";
echo "<div class='col-md-6'><h3>Children</h3><table class='table'><tr><th><h5>Name</h5></th><th><h5>Birthday</h5></th>";
while($row1 = mysqli_fetch_array($results1)) {
if (!empty($row1["kname"])) {
echo "<tr><td>". $row1["kname"] ."</td><td>". $row1["kbirthday"]."</td></tr>";
}
}
echo "</table></div></div>";
?>
您的查询应该如下所示
$select = mysqli_query($db, "SELECT * FROM parents_database WHERE parent_name = '$parent_name'");
while ($row = mysqli_fetch_array($select, MYSQLI_ASSOC)) {
// echo kids here..
}
由于第二个while循环所需的数据完全来自childs表,因此只需为此构建SELECT语句,而忽略join和WHERE语句,它们只查找父级电子邮件
下面的代码进入主while循环并替换
$results1 = mysqli_query($con,"SELECT directory.email, dirKids.kname, dirKids.kbirthday FROM directory JOIN dirKids ON '$row[email]' = dirKids.parent");
与
不知道你需要什么。因为你发布了两个不同的查询
但第一个有错误的方法,希望您需要修复该方法
我想你的意思是:
SELECT directory.email
, dirKids.kname
, dirKids.kbirthday
FROM directory
JOIN dirKids
ON directory.email = dirKids.parent
WHERE directory.email = '$row[email]'
从目录d中选择directory.email、dirKids.kname、dirKids.kbirthday加入dirKids k ON d.email=k.parent和k.parent='$row[email]'
?
SELECT directory.email
, dirKids.kname
, dirKids.kbirthday
FROM directory
JOIN dirKids
ON directory.email = dirKids.parent
WHERE directory.email = '$row[email]'