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Yaf_Session::del

(Yaf >=1.0.0)

Yaf_Session::del — 删除会话键

说明

public function Yaf_Session::del(string $name): bool

删除会话键及其对应的值。

参数

name

要删除的会话键。

返回值

成功时返回 true，失败时返回 false。

示例

示例 #1 Yaf_Session::del() 示例

<?php
class VerifyController extends Yaf_Controller_Abstract
{
    public function captchaAction()
    {
        $session = Yaf_Session::getInstance();
        $session->start();

        $expected = $session->get("captcha_code");

        // 一次性验证码：使用后立即删除
        $session->del("captcha_code");

        if ($expected === null
            || $this->getRequest()->getPost("code") !== $expected) {
            echo "invalid captcha";
        }
    }
}
?>

参见