PHP与HTML代码的结合
我试图将一些php代码放入与HTML结合的代码中 我有以下代码:PHP与HTML代码的结合,php,html,Php,Html,我试图将一些php代码放入与HTML结合的代码中 我有以下代码: <?php $result = mysqli_query($db,"SELECT * FROM klassen"); while($record = mysqli_fetch_array($result)) { echo '<div class="groepitem"><input type="radio" [IN THIS PLACE] name="groep" value="' . $record['k
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while($record = mysqli_fetch_array($result)) {
echo '<div class="groepitem"><input type="radio" [IN THIS PLACE] name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>
if($_SESSION['gebruikers_klasid'] == $record['klas_id']) {
echo 'checked';
}
我已经尝试过多次,但就是无法使其工作。您可以像这样连接三元运算符:
$result = mysqli_query($db, "SELECT * FROM klassen");
while($record = mysqli_fetch_array($result)) {
echo '<div class="groepitem"><input type="radio" ' . ($_SESSION['gebruikers_klasid'] == $record['klas_id'] ? "checked" : "") . ' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
$result=mysqli_query($db,“SELECT*FROM klassen”);
而($record=mysqli\u fetch\u数组($result)){
回音'.$record['klasNaam'].';
}
这应该行得通
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while($record = mysqli_fetch_array($result)) {
if($_SESSION['gebruikers_klasid'] == $record['klas_id']) {
$var = 'checked';
}
echo '<div class="groepitem"><input type="radio" '.$var.' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>
编辑:现在会话检查它是否在循环中您可以通过许多不同的方法来执行此操作,但是如果您想要更干净的html代码:
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while ($record = mysqli_fetch_array($result)) {
if ($_SESSION['gebruikers_klasid'] == $record['klas_id']) {
$checked = ' checked';
} else {
$checked = '';
}
echo '<div class="groepitem"><input type="radio"' . $checked . ' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>
或者
另一种方法是退出echo,然后运行条件语句,然后恢复echo。。。乙二醇
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while($record = mysqli_fetch_array($result)) {
echo '<div class="groepitem"><input type="radio" ';
if($_SESSION['gebruikers_klasid'] == $record['klas_id']) { echo 'checked'; }
echo ' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>
尝试将条件语句放在while
循环之后,同时为其分配变量,如$checked=“checked”
然后将变量回送/放置在[此处]
中。可能重复;)解释得很好,那是行不通的;比较需要在while循环中。@Brett是的,这就是为什么我说“类似”我所说的。它需要在循环中,而循环中。。。差不多。一次完成;)和三巨头一起工作真是太好了,好像不管用。当我添加以下代码时:($\u SESSION['gebruikers\u klasid']=$record['klas\u id']?“选中”:“”)它不会添加“选中”。当我添加:if($_SESSION['gebruikers\u klasid']=$record['klas_id']){echo'checked';}它确实添加了'checked'。@diederiik你开始会话了吗?@diederiik现在应该可以了!忘记添加空格了。只要再复制一次就可以了work@DiederiikkRizier的意思是,session_start()代码>包含在使用会话的所有页面中?
<?php
$result = mysqli_query($db,"SELECT * FROM klassen");
while($record = mysqli_fetch_array($result)) {
echo '<div class="groepitem"><input type="radio" ';
if($_SESSION['gebruikers_klasid'] == $record['klas_id']) { echo 'checked'; }
echo ' name="groep" value="' . $record['klasNaam'] . '">' . $record['klasNaam'] . '</div>';
}
?>