$val) {.. .}" method removes empty elements from the array."/> $val) {.. .}" method removes empty elements from the array.">

Home  >  Article  >  Backend Development  >  How to remove empty elements from array in php

How to remove empty elements from array in php

藏色散人
藏色散人Original
2021-06-24 09:38:203034browse

php method to remove empty elements in an array: 1. Use the "function myfunction($v) {...}" method to remove empty elements; 2. Use "foreach ($urlArr as $key => ; $val) {...}" method removes empty elements from the array.

How to remove empty elements from array in php

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How to remove empty elements in an array in php ?

How to remove empty elements from PHP array

Method 1 to remove empty elements: (Keep the key value unchanged)

Original array:

<?php
Array(
 [0] => sdfdsdsdsfrrrrrrr
 [1] => fdsfdsdsfds
 [2] => fdsfdsdsfdsds 
 [3] => fdsdsfdsfds 
 [4] => 
 [5] =>
 [6] =>
 [7] => fdsfdsfdsfds
 [8] => fdsfdsfdsfdsfdsfsd 
 [9] => ssssssss
 [10] => 
 [11] => sssssssssssssssssssss)
 ?>

Array after processing

<?php
Array( 
[0] => sdfdsdsdsfrrrrrrr 
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds 
[3] => fdsdsfdsfds 
[7] => fdsfdsfdsfds 
[8] => fdsfdsfdsfdsfdsfsd 
[9] => ssssssss 
[11] => sssssssssssssssssssss)
?>

Usage method:

<?php
function myfunction($v) {
    if ($v != "") {
        return true;
    }
    return false;
}
print_r(array_filter($urlArr, "myfunction"));
?>

Remove empty elements Method 2: (key value auto-increment)

Original array:

<?php
Array
(
[0] => sdfdsdsdsfrrrrrrr
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds
[3] => fdsdsfdsfds
[4] =>
[5] =>
[6] =>
[7] => fdsfdsfdsfds
[8] => fdsfdsfdsfdsfdsfsd
[9] => ssssssss
[10] =>
[11] => sssssssssssssssssssss
)

Processing After the array:

Array
(
[0] => sdfdsdsdsfrrrrrrr
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds
[3] => fdsdsfdsfds
[4] => fdsfdsfdsfds
[5] => fdsfdsfdsfdsfdsfsd
[6] => ssssssss
[7] => sssssssssssssssssssss
)

Usage:

$arr = array();
    foreach ($urlArr as $key => $val) {
        if (empty($val)) {
            continue;
        }
        $arr[] = $val;
    }

Recommended learning: "PHP Video Tutorial"

The above is the detailed content of How to remove empty elements from array in php. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn