1--TEST-- 2Scalar type missing parameters 3--FILE-- 4<?php 5 6$functions = [ 7 'int' => function (int $i) { return $i; }, 8 'float' => function (float $f) { return $f; }, 9 'string' => function (string $s) { return $s; }, 10 'bool' => function (bool $b) { return $b; }, 11 'int nullable' => function (int $i = NULL) { return $i; }, 12 'float nullable' => function (float $f = NULL) { return $f; }, 13 'string nullable' => function (string $s = NULL) { return $s; }, 14 'bool nullable' => function (bool $b = NULL) { return $b; } 15]; 16 17foreach ($functions as $type => $function) { 18 echo "Testing $type:", PHP_EOL; 19 try { 20 var_dump($function()); 21 } catch (Throwable $e) { 22 echo "*** Caught " . $e->getMessage() . PHP_EOL; 23 } 24} 25echo PHP_EOL . "Done"; 26?> 27--EXPECTF-- 28Testing int: 29*** Caught Too few arguments to function {closure}(), 0 passed in %s on line %d and exactly 1 expected 30Testing float: 31*** Caught Too few arguments to function {closure}(), 0 passed in %s on line %d and exactly 1 expected 32Testing string: 33*** Caught Too few arguments to function {closure}(), 0 passed in %s on line %d and exactly 1 expected 34Testing bool: 35*** Caught Too few arguments to function {closure}(), 0 passed in %s on line %d and exactly 1 expected 36Testing int nullable: 37NULL 38Testing float nullable: 39NULL 40Testing string nullable: 41NULL 42Testing bool nullable: 43NULL 44 45Done 46