php 为什么基本超级全局失败？

Question

我正在使用全局变量在这样的函数之间共享变量

<?php
$whatyear;
$whatfirstname;
$whatlastname;
function mycustom_user_register_submit($form, &$form_state)
{
            $GLOBALS["whatyear"]=$form_state['values']['yearofstudy'];
            $GLOBALS["whatfirstname"]=$form_state['values']['firstname'];
            $GLOBALS["whatlastname"]=$form_state['values']['lastname'];
}
function course_registration_user_insert(&$edit, $account, $category)
{
            $newuserid=$account->uid;
            $yearofstudy=$GLOBALS["whatyear"];
            $fname=$GLOBALS["whatfirstname"];
            $lname=$GLOBALS["whatlastname"];
                        //now use vars
                        drupal_set_message('dear '.$fname.' '.$lname.' ,'.'account uid is '.$account->uid); 
}

但是变量

fname,lname,学习年份

空得惊人！请帮我找出原因。 我收到类似错误

Notice: Undefined index: whatyear in course_registration_user_insert() (line 110 of C:\wamp\www\drupal-7.1\sites\all\modules\course_registration\course_registration.module).

Answer 1

尝试使用这样的全局变量：

<?php
function mycustom_user_register_submit($form, &$form_state)
{
    global $whatyear;
    global $whatfirstname;
    global $whatlastname;
    $whatyear=$form_state['values']['yearofstudy'];
    $whatfirstname=$form_state['values']['firstname'];
    $whatlastname=$form_state['values']['lastname'];
}
function course_registration_user_insert(&$edit, $account, $category)
{
    global $whatyear;
    global $whatfirstname;
    global $whatlastname;
    $newuserid=$account->uid;
    $yearofstudy=$whatyear;
    $fname=$whatfirstname;
    $lname=$whatlastname;
    //now use vars
    drupal_set_message('dear '.$fname.' '.$lname.' ,'.'account uid is '.$account->uid); 
}
?>

如果这不起作用，请确保在同一个 php 实例中以正确的顺序调用这些函数。如果在一个页面上调用第一个，然后在另一个页面上调用insert，则会打开一个新的php副本，并且您将丢失环境变量。