Php recursively calls the method to delete null element of Array

Source: Internet
Author: User

Php recursively calls the method to delete null element of Array

This example describes how to recursively call php to delete null elements in an array. Share it with you for your reference. The details are as follows:

This function can delete all null elements in the array, including empty strings and empty arrays.

?

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Function array_remove_empty ($ arr ){

$ Narr = array ();

While (list ($ key, $ val) = each ($ arr )){

If (is_array ($ val )){

$ Val = array_remove_empty ($ val );

// Does the result array contain anything?

If (count ($ val )! = 0 ){

// Yes :-)

$ Narr [$ key] = $ val;

}

}

Else {

If (trim ($ val )! = ""){

$ Narr [$ key] = $ val;

}

}

}

Unset ($ arr );

Return $ narr;

}

Demo:

The Code is as follows:

Array_remove_empty (array (1, 2, 3, '', array (), 4) => returns array (1, 2, 4)

I hope this article will help you with php programming.

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.