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<?php class Database {} $fns = [ function ($str) {}, function ($str ="hello") {}, function (string $str) {}, function (string $str = null) {}, function (?string $str) {}, function (?Database $db) {}, function (Database $db = new Database()) {}, function (string|null $str) {}, function (string $str = "hello") {}, function (?string $str = "hello") {}, function (string|int $str) {}, function (string|null $str = null) {}, function (string|null $str = "hello") {}, ]; echo "parameter\tallowsNull\tisOptional\tgetDefaultValue\tgetType\n"; foreach ($fns as $fn) { $param = (new ReflectionFunction($fn))->getParameters()[0]; echo substr($param->__toString(), 26, -2) . "\t" . json_encode($param->allowsNull()) . "\t" . json_encode($param->isOptional()) . "\t" . ($param->isDefaultValueAvailable() ? str_replace("\n", "", print_r($param->getDefaultValue(), true)) : "throws ReflectionException") . "\t" . ($param->getType() ? get_class($param->getType()) : "null") . "\n"; }
Output for 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
Deprecated: {closure:/in/pnXfM:9}(): Implicitly marking parameter $str as nullable is deprecated, the explicit nullable type must be used instead in /in/pnXfM on line 9 parameter allowsNull isOptional getDefaultValue getType $str true false throws ReflectionException null $str = 'hello' true true hello null string $str false false throws ReflectionException ReflectionNamedType ?string $str = NULL true true ReflectionNamedType ?string $str true false throws ReflectionException ReflectionNamedType ?Database $db true false throws ReflectionException ReflectionNamedType Database $db = new \Database() false true Database Object() ReflectionNamedType ?string $str true false throws ReflectionException ReflectionNamedType string $str = 'hello' false true hello ReflectionNamedType ?string $str = 'hello' true true hello ReflectionNamedType string|int $str false false throws ReflectionException ReflectionUnionType ?string $str = NULL true true ReflectionNamedType ?string $str = 'hello' true true hello ReflectionNamedType
Output for 8.1.30 - 8.1.34, 8.2.10 - 8.2.32, 8.3.0 - 8.3.33
parameter allowsNull isOptional getDefaultValue getType $str true false throws ReflectionException null $str = 'hello' true true hello null string $str false false throws ReflectionException ReflectionNamedType ?string $str = NULL true true ReflectionNamedType ?string $str true false throws ReflectionException ReflectionNamedType ?Database $db true false throws ReflectionException ReflectionNamedType Database $db = new \Database() false true Database Object() ReflectionNamedType ?string $str true false throws ReflectionException ReflectionNamedType string $str = 'hello' false true hello ReflectionNamedType ?string $str = 'hello' true true hello ReflectionNamedType string|int $str false false throws ReflectionException ReflectionUnionType ?string $str = NULL true true ReflectionNamedType ?string $str = 'hello' true true hello ReflectionNamedType
Output for 8.0.11
Fatal error: Constant expression contains invalid operations in /in/pnXfM on line 12
Process exited with code 255.
Output for 7.1.6, 7.4.33
Parse error: syntax error, unexpected '|', expecting variable (T_VARIABLE) in /in/pnXfM on line 13
Process exited with code 255.
Output for 5.6.40
Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) in /in/pnXfM on line 10
Process exited with code 255.
Output for 5.4.43, 5.5.11
Parse error: syntax error, unexpected '?', expecting '&' or variable (T_VARIABLE) in /in/pnXfM on line 10
Process exited with code 255.
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