(PHP 7)
Checks if the function has a specified return type
public bool ReflectionFunctionAbstract::hasReturnType ( void )
Checks whether the reflected function has a return type specified.
Returns:
Returns TRUE
if the function is a specified return type, otherwise FALSE
.
Examples:
ReflectionFunctionAbstract::hasReturnType() example
<?php function to_int($param) : int { return (int) $param; } $reflection1 = new ReflectionFunction('to_int'); var_dump($reflection1->hasReturnType());
The above example will output:
bool(true)
Usage on built-in functions
<?php $reflection2 = new ReflectionFunction('array_merge'); var_dump($reflection2->hasReturnType());
The above example will output:
bool(false)
See also:
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