drupal中创建一个hook_user，并且…

如果想在drupal的用户账号里添加一些自己的内容，就要用到hook_user钩子函数。

例如在wedpage.module中添加一个“创建页面的链接”和一个“发送邮件的form”

function wedpage_user($type, &$edit,&$user, $category = NULL){
if ($type == 'view') {
$items['wedpage'] = array(
'value' => l(t('Create your wedding homepage.'),'wedpage/add'),
);
$items_mail['send_mail'] = array(
'value' =>drupal_get_form('wedpage_mail_form'),
);

$wedpage = array(
t('Wedding homepage') => $items,
t('Send email to your friends') =>$items_mail,
);
return $wedpage;
}
}

user的钩子函数就设置成功了！

下面创建mail的发送函数

function wedpage_mail_form(){
$form['wedpage_mail'] = array(
'#type'          => 'textfield',
'#size'          => 60,
'#prefix'         =>'<table><tr><td>',
'#suffix'         => '</td>',
);    
$form['submit'] = array(
'#type'          => 'submit',
'#value'          => t('Send'),
'#prefix'         => '<td>',
'#suffix'         =>'</td></tr></table>',
);     
return$form;   
}

function wedpage_mail_form_submit($form_id, $form_values){
global $user, $base_url;
if (valid_email_address($form_values['wedpage_mail'])) {
$mailkey = 'wedpage';
$to = $form_values['wedpage_mail'];
$subject = 'wedding web page address';
$url     =$base_url.'/ourwedding/'.$user->uid;
$body = $url;
if (drupal_mail($mailkey, $to, $subject, $body)) {
drupal_set_message(t('The mail send successful!'));
}else {
drupal_set_message(t('The mail send failed.'), 'error');
}
}else {
drupal_set_message(t('The e-mail address %mail is not valid.',array('%mail' => $form_values['wpage_mail'])),'error');
}
}

上面的函数中valid_email_address是一个系统的验证email的函数，drupal_mail函数用于测试邮件是否发送成功！