Online PHP editor | refs for ZcCDu

<?php function is_blank(&$variable) { return (bool) !(isset($variable) AND (!empty($variable) OR is_numeric($variable) OR $variable === false)); } $empty_var = ''; $var = 'hello'; $num = 0.0; $bool = false; $bool2 = true; var_dump(is_blank($unexistent), is_blank($empty_var), is_blank($var), is_blank($num), is_blank($bool), is_blank($bool2));