我试图在数组中存储一个字符串，但它没有保存数组：
<?php
session_start();
$username = $_POST["username"];
$password = $_POST["password"];
$users = array();
$passes = array();
/*if (isset($_SESSION['users'])) {
$users = unserialize($_SESSION['users']);
}
if (isset($_SESSION['passes'])) {
$passes = unserialize($_SESSION['passes']);
}*/
if (isset($_POST['button'])) {
$login_successful = false;
for ($i = 0; $i < count($_SESSION['user']); $i++) {
if ($username === $_SESSION['user'][$i] && $password === $_SESSION['pass'][$i]) {
echo "<p style='"font-family: Open Sans'">Logged in as " .$users[$i] ."</p>";
$login_successful = true;
break; // no need to continue the loop here, so we break out of it
}
}
if (!$login_successful) {
echo "<p style='"font-family: Open Sans'">Login Failed</p>";
}
}
else if (isset($_POST['register'])) {
$users = array_push($users, $username);
$passes = array_push($passes, $password);
$_SESSION['user'] = serialize($users);
$_SESSION['pass'] = serialize($passes);
echo "Made your account successfully! <a href='"index.html'">Go back to login</a>";
}
else if (isset($_POST['userlist'])) {
$users = unserialize($_SESSION['users']);
$passes = unserialize($_SESSION['passes']);
for ($i = 0; $i < count($users); $i++) {
echo $user[$i];
echo $passes[$i];
}
}
?>
它不保存数组，只对调用它的当前页面进行更改，然后数组返回为零。
提前感谢
您似乎对PHP的工作方式有很大的误解。每次php脚本运行时，就像是第一次运行一样。因此，当脚本完成时，您的数组将从内存中删除。
但是，如果您想在请求之间携带数据，可以尝试会话。
session_start();//important
//YOUR EXISTING ARRAY
$array = array("element", "element 2", "element 3");
//ADD YOUR NEW ELEMENT TO THE ARRAY
$array = array_push( $array, "NEW ELEMENT" );
//store the new serialized (converted to string) array
$_SESSION['my_array'] = serialize( $array );
if ( isset($_SESSION['my_array']) ) {
//grab the serialized (string version) of the array, and convert it back to an array
$my_array = unserialize( $_SESSION['my_array'] ); //holds [0] => "el1", [1] => "el2"
}
阅读PHP手册中关于会话的更多信息。
您也可以尝试cookie或将数组存储到数据库中。只需知道cookie存储在用户的计算机上，会话存储在服务器上。
您可以使用array_push，如下所示：$user=array_prush（$user，$username）；仅此而已！
让我们对Ryan Smith的解决方案进行一些改进，使其更简单
session_start();
$_SESSION['users'][] = 'Hello';
var_dump($_SESSION['users']);
// if you wanna use $users,
/*
if(isset($_SESSION['users'])) {
$users = unserialize($_SESSION['users']);
}
*/