Combined with PHP verification code picture generation realization Click Refresh

Source: Internet
Author: User
<!--here Math.random () is a method of generating random numbers from the math object of JS, which returns a decimal number between 0 and 1 (excluding 1), which is randomly returned each time the method is invoked. So, use a new parameter to request the current resource again, so that the The browser will assume that this is a different resource and will not be returned from the cache, which is most commonly the case with the validation code refresh. -->

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.