How to remove spaces from php array

How to remove spaces from PHP arrays: Use the function [array_filter()] to remove spaces from a one-dimensional array. The code is [function filter_array($arr, $values ​​= ['', null, false, 0, '0',[]])].

How to remove spaces from an array in php:

To remove empty values ​​from an array in php, you can use array_filter()This function can only work on one-dimensional arrays. Once you need to remove empties from a multi-dimensional array, it will not work, and the removed empties also include (int)0, (string)0. Use it There is still something wrong!

The custom function to remove a value in the array defaults to a null value. It can be used for both one-dimensional arrays and multi-dimensional arrays!

/**
 * 去除多维数组中的空值
 * @author 
 * @return mixed
 * @param $arr 目标数组
 * @param array $values 去除的值  默认 去除  '',null,false,0,'0',[]
 */
function filter_array($arr, $values = ['', null, false, 0, '0',[]]) {
    foreach ($arr as $k => $v) {
        if (is_array($v) && count($v)>0) {
            $arr[$k] = filter_array($v, $values);
        }
        foreach ($values as $value) {
            if ($v === $value) {
                unset($arr[$k]);
                break;
            }
        }
    }
    return $arr;
}

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