我有下面的代码,它从php创建下拉列表。我想在这里实现两件事。我想将其中一个选项设置为默认设置。它可以是硬编码的,也可以是从查询中选择的。2.按下按钮时,应保留所选项。我可以使用以下会话数据检索所选项:echo $print_version1[array_keys($print_version1)[0]];
Drop-down code:
$result = $conn->query("SELECT DISTINCT nx_version FROM workflow1 ORDER BY id DESC");
echo "<form action='http://localhost/w_5aug/process.php' method='get'>";
echo "<html>";
echo "<body>";
echo "<p></p>";
echo "<center>";
echo "<strong> Select Base Verison To Compare With : </strong>";
echo "<select name='nx_version' id='nx_version'>";
while ($row = $result->fetch_assoc()) {
$nx_version = $row['nx_version'];
echo '<option>'.$nx_version.'</option>';
}
echo "</select>";
echo " <button type='submit'><b>Add Base Verison</b></button>";
echo "</center>";
echo "</body>";
echo "</html>";
echo "<p></p>";
$array_select = $_SESSION['data'];
print_r($array_select);
echo "<form>";
发布于 2018-08-14 15:15:22
我假设应该选择的选项是$ print_version1 [array_keys($ print_version1)[0]
while ($row = $result->fetch_assoc()) {
$nx_version = $row['nx_version'];
if($_SESSION["id"]) {
if($nx_version == "the hardcode value you want to be selected"){
echo '<option selected="selected">'.$nx_version.'</option>';
}else{
echo '<option>'.$nx_version.'</option>';
}
}else{
if($print_version1[array_keys($print_version1)[0]] == $nx_version){
echo '<option selected="selected">'.$nx_version.'</option>';
}else{
echo '<option>'.$nx_version.'</option>';
}
}
}
https://stackoverflow.com/questions/-100005977
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