PHP

php empty

/*
 * Determine whether something is considered empty/falsy
 */
empty('');      // true
empty('0');     // true
empty(0);       // true
empty(null);    // true
empty([]);      // true
empty(false);   // true
empty('false'); // false
empty('true');  // false

empty in php

## CHECKS IF FILE IS EMPTY
if ($_FILES['file']['size'] == 0 && $_FILES['file']['error'] == 0)
{
    // file is empty (and not an error)
}

empty func php

empty($var):bool
//checks if the variable is empty and returns true or false