How to remove empty elements from php array

How to remove empty elements from an array in php

There are many ways to remove empty elements from an array in PHP, but there is a system function is the most convenient:

array_filter (parameter 1, parameter 2);

This function passes each value in the "parameter 1" array to the "parameter 2" function in turn. If the "Parameter 2" function returns TRUE, the current value of the "Parameter 1" array will be included in the returned result array. The key names of the array remain unchanged.

If you only need to remove empty elements in the array, parameter 2 can be omitted and included in the array:

$arr1=array("a" => 1,  "b" => 0,  "c" => 3,  "d" => "",  "e" => 5,"f"=>array());

//Execute

$arr1=array_filter($arr1);

//The result is

array("a" => 1,  "c" => 3,  "e" => 5);

Recommended tutorial: "PHP Tutorial"

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