Amit Dhamu

Software Engineer

Valid PHP Types

Valid types available for return and argument types

Type Description Minimum PHP Version
Class/interface name The parameter must be an instanceof the given class or interface name. PHP 5.0.0
self The parameter must be an instanceof the same class as the one the method is defined on. This can only be used on class and instance methods. PHP 5.0.0
array The parameter must be an array. PHP 5.1.0
callable The parameter must be a valid callable. PHP 5.4.0
bool The parameter must be a boolean value. PHP 7.0.0
float The parameter must be a floating point number. PHP 7.0.0
int The parameter must be an integer. PHP 7.0.0
string The parameter must be a string. PHP 7.0.0
iterable The parameter must be either an array or an instanceof Traversable. PHP 7.1.0
object The parameter must be an object. PHP 7.2.0
void The function/method will not return anything. PHP 7.1.0

 php7 / types

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