Php learning journey: static variables and methods

Source: Internet
Author: User
: This article mainly introduces the php learning journey: static variables and methods. if you are interested in the PHP Tutorial, please refer to it. Static keywords are used to modify attributes and methods. Static attributes, Static method.

The static method can only access static attributes, but cannot access non-static attributes. However, non-Static methodYou cannot use the this keyword to call a non-Static methodInstead, you must use the self: keyword and the non-Static methodCannot contain non-Static variables, GeneralStatic methodDo Not CallStatic method.

Static attributes, which are shared by all instances in the memory.

You can use the self: keyword to access the static members of the current class.

NonStatic methodCallStatic variables


  '.$test->display();?>

Static methodCallStatic variables


  '.$test::display_static();?>

NonStatic methodCallStatic method


  '.$test->display();?>

Static methodCall non-Static method(Actually, it is equivalentStatic methodChangesStatic method)


  '.$test::display_static();?>

'). AddClass ('pre-numbering '). hide (); $ (this ). addClass ('Has-numbering '). parent (). append ($ numbering); for (I = 1; I <= lines; I ++) {$ numbering. append ($ ('
  • '). Text (I) ;}; $ numbering. fadeIn (1700) ;}) ;}; script

    The above describes the php learning journey: static variables and methods, including static methods, static attributes, static variables, and hope to help those who are interested in PHP tutorials.

    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.