Return type Userdefine function in php 7.4 2020
Values are returned by using the optional return statement. Any type may be returned, including arrays and objects. This causes the function to end its execution immediately and pass control back to the line from which it was called. See return for more information.
A function can not return multiple values, but similar results can be obtained by returning an array.
To return a reference from a function, use the reference operator & in both the function declaration and when assigning the returned value to a variable:
PHP 7 adds support for return type declarations. Similarly to argument type declarations, return type declarations specify the type of the value that will be returned from a function. The same types are available for return type declarations as are available for argument type declarations.
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