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Type

is

String -> a -> Boolean

Added in: v1.0

See if value is of given type.

Internally this function uses \gettype() with few support of few aliases: * bool - alias for boolean type * float - alias for double type * callable - checks if $value is valid callback * function - same as callable * class FQN - will check if supplied object is instance of given class

P::is('bool', true); // true
P::is(\stdClass::class, new \stdClass); // true
P::is(float, 1.1); // true

typeCond

[[String, (*... -> *)]] -> (*... -> *)

Added in: v1.0

Returns a function, fn, which encapsulates if/else, if/else, .

.. logic. P::typeCond takes a list of [type, transformer] pairs. Type is converted to predicate matching type of variable (in terms of P::is()). All of the arguments to fn are applied to each of the predicates in turn until one returns a truth-y value, at which point fn returns the result of applying its arguments to the corresponding transformer. If none of the predicates matches, fn returns null.

$count = P::typeCond([
    ['string', '\\mb_strlen'],
    ['array', '\\count'],
    [P::T(), P::always(0)],
]);
$count('foo'); // 3
$count(['f', 'o', 'o']); // 3
$count(new stdClass); // 0