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The X argument passed to Y must be an instance of boolean, boolean data - PHP7

This code

<?php
function a(boolean $value){
    var_dump($value);
}
a(true);

I am getting the error

TypeError: argument 1 passed to () must be an instance of boolean, boolean data

What's going on here?

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1 answer


Only valid typehint for boolean

- bool

. According to the documentation it is boolean

not recognized as an alias bool

in types. Instead, it is treated as a class name. The same goes for int

(scalar) and integer

(class name) which will result in an error

TypeError: Argument 1 passed to () must be an integer instance, integer given

In this particular case, a class object is expected boolean

, but passed in true

(bool, scalar).

Valid code



<?php
function a(bool $value){
    var_dump($value);
}
a(true);

get

BOOL (true)

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