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How to remove empty elements from array in php

藏色散人
Release: 2023-03-10 20:20:02
Original
3128 people have browsed it

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:

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<?php

Array(

 [0] => sdfdsdsdsfrrrrrrr

 [1] => fdsfdsdsfds

 [2] => fdsfdsdsfdsds

 [3] => fdsdsfdsfds

 [4] =>

 [5] =>

 [6] =>

 [7] => fdsfdsfdsfds

 [8] => fdsfdsfdsfdsfdsfsd

 [9] => ssssssss

 [10] =>

 [11] => sssssssssssssssssssss)

 ?>

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Array after processing

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<?php

Array(

[0] => sdfdsdsdsfrrrrrrr

[1] => fdsfdsdsfds

[2] => fdsfdsdsfdsds

[3] => fdsdsfdsfds

[7] => fdsfdsfdsfds

[8] => fdsfdsfdsfdsfdsfsd

[9] => ssssssss

[11] => sssssssssssssssssssss)

?>

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Usage method:

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<?php

function myfunction($v) {

    if ($v != "") {

        return true;

    }

    return false;

}

print_r(array_filter($urlArr, "myfunction"));

?>

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

Original array:

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<?php

Array

(

[0] => sdfdsdsdsfrrrrrrr

[1] => fdsfdsdsfds

[2] => fdsfdsdsfdsds

[3] => fdsdsfdsfds

[4] =>

[5] =>

[6] =>

[7] => fdsfdsfdsfds

[8] => fdsfdsfdsfdsfdsfsd

[9] => ssssssss

[10] =>

[11] => sssssssssssssssssssss

)

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Processing After the array:

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Array

(

[0] => sdfdsdsdsfrrrrrrr

[1] => fdsfdsdsfds

[2] => fdsfdsdsfdsds

[3] => fdsdsfdsfds

[4] => fdsfdsfdsfds

[5] => fdsfdsfdsfdsfdsfsd

[6] => ssssssss

[7] => sssssssssssssssssssss

)

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Usage:

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$arr = array();

    foreach ($urlArr as $key => $val) {

        if (empty($val)) {

            continue;

        }

        $arr[] = $val;

    }

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Recommended learning: "PHP Video Tutorial"

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