php function sizeof () Specific use of syntax detailed _php tutorial

Source: Internet
Author: User
Everyone through thephp function sizeof () syntax:

sizeof (ARRAYNAME);

Tips and Instructions

Note: This feature may return 0 if a variable is not set, but may also return 0 if a variable contains an empty array. The Isset () function can be used to test whether a variable is set.

Let's take a look at the example of the PHP function sizeof ().

 
  
  
  1. Php
  2. $ people Array("A", "Joe", "B", "C");
  3. $ result sizeof($people);
  4. echo $result;
  5. ?>

Output Result: 4

As we can see from the above example, the PHP function sizeof () is the same as the Count method.


http://www.bkjia.com/PHPjc/446353.html www.bkjia.com true http://www.bkjia.com/PHPjc/446353.html techarticle Everyone through the PHP function sizeof () syntax: sizeof (arrayname); Hints and Instructions Note: This feature may return 0 if a variable is not set, but may also return 0 if a ...

  • 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.