我想添加动态会话变量。所以我从id = 0开始但是在我提交表单之后,id必须设置为1而下一个设置为2等等。这里是我试过的。我尝试在if submit函数中执行$ id ++,但这不起作用。
<?php
$id = 0;
if (isset($_POST['submit'])) {
$_SESSION['person'][$id] = array(
'id' => $id,
'voornaam' => $_POST['firstname'],
'achternaam' => $_POST['lastname'],
'leeftijd' => $_POST['age'],
'rol' => $_POST['role'],
'omschrijving' => $_POST['description'],
);
$id++;
header('Location: mysite');
}
?>
答案 0 :(得分:1)
$id = count($_SESSION['person']);
(假设您已将$_SESSION['person']
定义为其他地方的数组。)
完整代码段如下所示:
if (!is_array($_SESSION['person']))
{
$_SESSION['person'] = array();
}
if (isset($_POST['submit']))
{
$id = count($_SESSION['person']);
$_SESSION['person'][$id] = array(
'id' => $id,
'voornaam' => $_POST['firstname'],
'achternaam' => $_POST['lastname'],
'leeftijd' => $_POST['age'],
'rol' => $_POST['role'],
'omschrijving' => $_POST['description'],
);
header('Location: mysite');
}
答案 1 :(得分:0)
你实际上并没有在任何地方坚持这个价值。所以它每次都会重置为0.
每次都创建值:
$id = 0;
你递增它:
$id++;
但你不能把它留在任何地方。如果该值应该遵循用户的会话,请将其保留在会话中。类似的东西:
// get the id from session, or create a new one
$id = 0;
if (isset($_SESSION['id'])) {
$id = $_SESSION['id'];
}
// use the id value in your code
// increment the id and store it back in the session
$_SESSION['id'] = $id + 1;
答案 2 :(得分:0)
没有清楚地理解你,但这可能会有所帮助
<?php
$id = 0;
if (isset($_POST['submit'])) {
$currID = $_SESSION['person']['id'];
$_SESSION['person'] = array(
'id' => $currID++,
'voornaam' => $_POST['firstname'],
'achternaam' => $_POST['lastname'],
'leeftijd' => $_POST['age'],
'rol' => $_POST['role'],
'omschrijving' => $_POST['description'],
);
header('Location: mysite');
}
?>