【发布时间】：2018-07-30 03:21:50
【问题描述】：
我在循环中有一个按钮。 当用户单击按钮时，我想使用循环内的变量值创建一个 $_SESSION 变量。 比如这个循环项的变量$id_puja是767，当用户点击按钮我要创建会话变量$_SESSION['clicked_puja'] = $row['id_puja']。
这是按钮：
while{...
$id_puja = $row['id_puja'];
...
<button type="button" class="btn btn-info btn-lg" data-toggle="modal" data-target="#myModal">Open Modal</button>
...
}
我 已编辑，完整的循环代码：
<?php
$resultadopujas=0;
global $mysqli;
$loop = mysqli_query($mysqli, "SELECT * FROM tb_pujas
WHERE subasta_puja = '".$subasta."'")
or die (mysqli_error($mysqli));
$orden = 0;
$resultado = $loop ->num_rows;
if ($resultado == 0){
?> <div class="container">
<div class="jumbotron">
<div class="row">
<div class="col-md-6">
<p><?php echo $resultado."NO HAY PUJAS"?></p>
</div>
</div>
</div>
</div>
<?php
}
$numpuja=0;
while ($row = mysqli_fetch_array($loop))
{$numpuja = $numpuja+1;
$originalDate = $row['datetime_puja'];
$newDate = date("d-m-Y H:i:s",strtotime($originalDate))
?>
<div class="container">
<div class="jumbotron" style="background-color: white">
<div class="row">
<div class="col-md-2">
<img style="width: 80px;height: auto;align-self: " src="garantia.png">
</div>
<div class="col-md-2">
<img style="width: 80px;height: auto;align-self: " src="ok.png">
</div>
<div class="col-md-2">
<img style="width: 80px;height: auto;align-self: " src="extra.png">
</div>
<div class="col-md-2">
<p><strong>Dia/Hora puja: </strong><?php echo $newDate?></p>
</div>
<div class="col-md-2">
<p><strong>Precio puja: </strong><?php echo $row['precio_puja']." €"?></p>
</div>
<div class="col-md-2">
<p><?php echo "<strong>Puja núm:</strong> ".$numpuja?></p>
</div>
</div>
<div class="row">
<div class="col-md-12">
<p><?php echo "<strong>Comentarios:</strong> ".$row['comentarios_puja']?></p>
</div>
</div>
<div class="row">
<div class="col-md-4">
<img style="width: 100%;height: auto;align-self: " src="https://cribbeo.com/pujas/<?php echo $row['foto1']?>">
</div>
<div class="col-md-4">
<img style="width: 100%;height: auto;align-self: " src="https://cribbeo.com/pujas/<?php echo $row['foto2']?>">
</div>
<div class="col-md-4">
<img style="width: 100%;height: auto;align-self: " src="https://cribbeo.com/pujas/<?php echo $row['foto3']?>">
</div>
</div>
<div class="row">
<div class="col-md-4">
</div>
<div class="col-md-4">
</div>
<div class="col-md-4">
<script>
function myclick(){
alert (<?php echo $row['precio_puja']?>);
}
</script>
<button type="button" class="btn btn-info btn-lg" data-toggle="modal" id="boton" onclick="myclick()" data-target="#myModal">Open Modal</button>
</div>
</div>
</div>
</div>
</div>
<?php
}
?>
编辑的模态部分
<div id="myModal" class="modal fade" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
<h4 class="modal-title">Mensajes de la subasta <?php echo $referencia."VAR=".$_COOKIE['puja']?></h4>
</div>
<div class="modal-body" style="background-color:#486A86; color: white">
<div class="container">
<header class="header">
<h1>Chat</h1>
</header>
<main>
<img src="images/logohorizontal.png" alt="Cribbeo" width="200px">
<div class="userSettings">
<label for="userName">Usuario: <?php echo $_SESSION['usuario']?></label>
<input id="userName" type="hidden" placeholder="Username" maxlength="32" value=" <?php echo $_SESSION['usuario']?>">
</div>
<div class="chat">
<div id="chatOutput"></div>
<input id="chatInput" type="text" style="background-color:white; color: #486A86" placeholder="Escribe aquí el texto de tu mensaje" maxlength="128">
<button id="chatSend" style="background-color:#486A86; color: white">Enviar</button>
</div>
</main>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Cerrar</button>
</div>
</div>
</div>
</div>
这是 chat.js
$(document).ready(function() {
var chatInterval = 250; //refresh interval in ms
var $userName = $("#userName");
var $chatOutput = $("#chatOutput");
var $chatInput = $("#chatInput");
var $chatSend = $("#chatSend");
function sendMessage() {
var userNameString = $userName.val();
var chatInputString = $chatInput.val();
$.get("./write.php", {
username: userNameString,
text: chatInputString
});
$userName.val("");
retrieveMessages();
}
function retrieveMessages() {
$.get("./read.php", function(data) {
$chatOutput.html(data); //Paste content into chat output
});
}
$chatSend.click(function() {
sendMessage();
});
setInterval(function() {
retrieveMessages();
}, chatInterval);
});
【问题讨论】：
-
您可以借助 Ajax 实现这一目标。
-
@Shivrudra，作为测试，我创建了一个 onclick 函数，但我总是从循环中的最后一项获取值，而不是从选定项获取值
-
@IncredibleHat，我已经在循环中包含了代码，按钮位于循环内的底部
-
“我想创建会话变量
$_SESSION['clicked_puja'] = $row['id_puja']。” - 这应该可以。你在哪里尝试过？将会话数组分配给循环行的 id，然后将其放回您希望它应该工作的位置。你这样做有什么困难？ -
我也看不到
$subasta在WHERE子句中的分配位置。这和这一切有关系吗？如果是这样，那么将会话数组分配给那个，不是吗？