Question

我想设置$ choice_1和$ choice_2但每个会话只能设置一次。我使用$ choice_1和$ choice_2来创建图像名称，我想避免在会话中绘制不同的jpeg。我在http://communitychessclub.com/rabren显示两个棋子，我希望这两个图像用于整个用户会话。

<?php 
if (!isset($_SESSION['choice_1'])) {$chessmen = array("N","Q","R","B","K","P"); 

$random_piece = array_rand($chessmen); 
$choice_1 = $chessmen[$random_piece];
unset($chessmen[$random_piece]);

$random_piece = array_rand($chessmen); 
$choice_2 = $chessmen[$random_piece];} 
?>

Answer 1

在打印任何输出之前使用session_start（）或在php.ini

中将session auto start设置为1

<?php
session_start();
if(!isset($_SESSION['test']))
echo "no test session";
else
echo $_SESSION['test'];
if($sth)
{
 $_SESSION['test'] = 'sth...';
}

Answer 2

以这种方式试试......

<?php 
session_start();

if(!isset($_SESSION['choice_1'])) {
    $chessmen = array("N","Q","R","B","K","P"); 

    $random_piece = array_rand($chessmen); 
    $_SESSION['choice_1'] = $chessmen[$random_piece];

    unset($chessmen[$random_piece]);

    $random_piece = array_rand($chessmen); 
    $_SESSION['choice_2'] = $chessmen[$random_piece];
} 
?>

您的会话数据存储在$ _SESSION-Array中，而不是作为常见的php变量存储在外部。所以如果你想 - 例如 - 打印＆＃34; choise_1＆＃34;之后，您需要echo $_SESSION['choise_1'];。

php没有工作

2 个答案: