NotEmpty

v::notEmpty()

Validates if the given input is not empty or in other words is input mandatory and required. This function also takes whitespace into account, use noWhitespace() if no spaces or linebreaks and other whitespace anywhere in the input is desired.

v::stringType()->notEmpty()->validate(''); // false

Null values are empty:

v::notEmpty()->validate(null); // false

Numbers:

v::intVal()->notEmpty()->validate(0); // false

Empty arrays:

v::arrayVal()->notEmpty()->validate([]); // false

Whitespace:

v::stringType()->notEmpty()->validate('        ');  //false
v::stringType()->notEmpty()->validate("\t \n \r");  //false