PHP -код, чтобы проверить, является ли переменная NULL
if(empty($var1)){
echo 'This line is printed, because the $var1 is empty.';
}
Yellowed Yak
if(empty($var1)){
echo 'This line is printed, because the $var1 is empty.';
}if (empty($var)) {
echo '$var is either 0, empty, or not set at all';
}// Declare an array and initialize it
$non_empty_array = array('apples' => '2');
// Declare an empty array
$empty_array = array();
// Condition to check array is empty or not
if(!empty($non_empty_array)) {
echo "Given Array is not empty <br>";
}
if(empty($empty_array)) {
echo "Given Array is empty";
}empty ( mixed $var ) : bool