Value Validators

Nette\Utils\Validators is a static class with useful functions for data validation.

All examples assume an alias is created:

use Nette\Utils\Validators;

Rules

Rule definitions are written in a similar way as Latte helpers. Each rule is separated with vertical bar (|) and optionally suffixed with parameters after colon.

is($value, $expected)

Verifies that the input corresponds to the rules.

Validators::is('Nette Framework', 'string:15'); // 15 characters long string
Validators::is('Nette Framework', 'string:8..'); // minimum of 8 characters long string
Validators::is('Nette Framework', 'string:..32'); // maximum of 32 characters long string
Validators::is('Nette Framework', 'string:8..32'); // minimum of 8 and maximum of 32 characters long string
Validators::is(23, 'int:0..10'); // integer between 0 and 10
Validators::is(1, 'int|float'); // integer or float (can be written as `number`)

assert($value, $expected, $label = ‘variable’)

Verifies that the input corresponds to the rules, otherwise throws an assertion exception.

Validators::assert('Nette Framework', 'string:15'); // ok
Validators::assert('Lorem ipsum dolor sit', 'string:78'); // exception
// The variable expects to be string:78, string 'Lorem ipsum dolor sit' given.

assertField($arr, $field, $expected = NULL, $label = “item ‘%’ in array”)

Verifies that the array item corresponds to the rules, otherwise throws an assertion exception.

$arr = array('nette' => 'framework');

Validators::assertField($arr, 'nette', 'string:15'); // ok
Validators::assertField($arr, 'foo', 'string:15'); // exception
// Missing item 'foo' in array.

Validators::assertField($arr, 'nette', 'int'); // exception
// The item 'nette' in array expects to be int, string 'framework' given.

Validators

isNumericInt($value)

Verifies that the input is an integer.

Validators::isNumericInt(23); // true
Validators::isNumericInt(1.78); // false
Validators::isNumericInt('42'); // true
Validators::isNumericInt('3.14'); // false
Validators::isNumericInt('nette'); // false

isNumeric($value)

Verifies that the input is a number.

Validators::isNumeric(23); // true
Validators::isNumeric(1.78); // true
Validators::isNumeric('42'); // true
Validators::isNumeric('3.14'); // true
Validators::isNumeric('nette'); // false

isCallable($value)

Verifies that the input is callable.

Validators::isCallable('Foo::bar'); // true
Validators::isCallable(array($foo, 'bar')); // true
Validators::isCallable(array('Foo::bar')); // true
Validators::isCallable('Lorem ipsum dolor sit...'); // false
Validators::isCallable(23); // false
Validators::isCallable(FALSE); // false

isUnicode($value)

Verifies that the input is a valid UTF-8 string.

Validators::isUnicode('nette'); // true
Validators::isUnicode(''); // true
Validators::isUnicode(1); // false

isNone($value)

Verifies that the input is ((none))“empty”.

Validators::isNone(0); // true
Validators::isNone(''); // true
Validators::isNone(FALSE); // true
Validators::isNone(NULL); // true
Validators::isNone('nette'); // false

isList($value)

Verifies that the input is non-associative array.

Validators::isList(array('foo', 'bar')); // true
Validators::isList(array('foo' => 'Bar')); // false

isInRange($value, array $range)

Verifies that the input is in a given range.

Validators::isInRange(5, array(0, 5)); // true
Validators::isInRange(23, array(NULL, 5)); // false
Validators::isInRange(23, array(5)); // true
Validators::isInRange(1, array(5)); // false

isEmail($value)

Verifies that the input is a valid email address.

Validators::isEmail('example@nette.org'); // true
Validators::isEmail('nette'); // false

isUrl($value)

Verifies that the input is a valid URL address.

Validators::isUrl('https://nette.org'); // true
Validators::isUrl('nette'); // false