How to remove null values ​​from array in php

php method to remove null values ​​​​in an array: You can use the built-in function array_filter() to achieve this, such as [array_filter($array)]. The array_filter() function uses a callback function to filter elements in the array.

Function introduction:

array_filter() function uses a callback function to filter elements in the array.

This function passes each key value in the input array to the callback function. If the callback function returns true, the current key value in the input array is returned to the result array. Array key names remain unchanged.

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Grammar format:

array_filter(array)

Parameter description: array is the object of the operation

Example:

<?php
    $array = array(&#39;a&#39; => "abc", &#39;b&#39; => "bcd",&#39;c&#39; =>"cde",&#39;d&#39; =>"def",&#39;e&#39;=>"");
    $b= array_filter($array);

    print_r($b);
?>

Result:

Array (
[a] => abc
[b] => bcd
[c] => cde
[d] => def
)

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