PHP array removal null value function sharing, PHP array function sharing_PHP tutorial

Sharing of php array function to remove null values, sharing of php array function

For a one-dimensional php array, how to clear the elements with empty values? The direct way is to loop through foreach and judge and exclude one by one. However, this method is still a bit complicated. Let me share a method I saw today. It is very simple

Copy code The code is as follows:

/**
* Method library-remove null values ​​from array
* @param string $num numerical value
* @return string
​*/
public function array_remove_empty(&$arr, $trim = true) {
If (!is_array($arr)) return false;
foreach($arr as $key => $value){
If (is_array($value)) {
                self::array_remove_empty($arr[$key]);
         } else {
$value = ($trim == true) ? trim($value) : $value;
                if ($value == "") {
                      unset($arr[$key]);
              } else {
$arr[$key] = $value;
            }
}
}
}

Isn’t this a very practical function? I hope you all like it.

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