PHP Validator

Validate strings, numbers and arrays according to predefined or custom defined rules.

Installation

composer require lubaro/php-validator

Validating strings

---

• required() - checks that string is exists and not empty
• minLength(int $minLength) - checks that the checked value length is equal or greater than passed min length value
• contains(string $substr) - checks that the checked value contains one or more times the passed substring

$v = new LubaRo\PhpValidator\Validator();

$stringValidator = $v->string(); // say to validator that we want to validate strings

$stringValidator->isValid(''); // => true
$stringValidator->required()->isValid(''); // => false

$ruleSet1 = $stringValidator->required()->contains('aka');

$ruleSet1->isValid('Checked value aka string value'); // => true
$ruleSet1->isValid('Simple string'); // => false

Validating numbers

---

• required() - checks that number is exists
• positive() - checks that number is greater than zero
• range(int|float $min, int|float $max) - checks that number value is between or equal to the provided values

$v = new LubaRo\PhpValidator\Validator();

$v->number()->isValid(45.15); // => true
$v->number()->isValid('45.15'); // => false
$v->number()->range(-4, 15)->isValid(0); // => true

Validating arrays

---

• required() - checks that array is exists
• sizeof(int $size) - checks that array size is equal to given value
• shape(array $shape) - checks that array contains specified elements

$v = new LubaRo\PhpValidator\Validator();

$v->array()->isValid([1, 2, 3]); // => true
$v->array()->sizeof(2)->isValid(['name' => 'Pablo', 'age' => 27]); // => true

$arrayShape = $v->array()->shape([
    'name' => $v->string()->required(),
    'age'  => $v->number()->positive()
]);

$arrayShape->isValid(['name' => 'Pablo', 'age' => 27, 'hobbies' => []]); // => true
$arrayShape->isValid(['name' => 'Jake', 'hobbies' => []]); // => false
$arrayShape->isValid(['name' => 'Gary', 'age' => -1800]); // => false

Custom defined rules

---

You can add own rules to any type of validators such as string, number or array

$v = new LubaRo\PhpValidator\Validator();

// in custom function first parameter is a validating value
// other parameters come after
// for custom functions number of parameters is not restricted
$fn = fn($checkedNumber, $param1) => $checkedNumber < $param1;

// addValidator(validatorName, customFunctionName, function);
$v->addValidator('number', 'isLessThan', $fn);

// apply custom function using test(customFuncName, ...params)
$lessThan15 = $v->number()->required()->test('isLessThan', 15);

$lessThan15->isValid(5);  // => true 
$lessThan15->isValid(25); // => false