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run code in 150+ php & hhvm versions
Bugs & Features
<?php // explicit mention of methods that should be fluent // would be preferable to returning $this on null // since a method may very well return null as something // that is expected. class Foo { public function bar() { var_dump(__METHOD__); } public function baz() { var_dump(__METHOD__); } public function bat() { var_dump(__METHOD__); return 'bat!'; } } class FluentWrapper { private $instance; private $fluentMethods; public function __construct($instance, array $fluentMethods = []) { $this->instance = $instance; $this->fluentMethods = $fluentMethods; } public function __call($name, $args) { $result = call_user_func([$this->instance, $name], $args); return in_array($name, $this->fluentMethods) ? $this : $result; } } class FluentFoo extends FluentWrapper { public function __construct(Foo $foo) { parent::__construct($foo, ['bar', 'baz']); } } $foo = new FluentFoo(new Foo()); $bat = $foo ->bar() ->baz() ->bar() ->baz() ->bat(); print $bat."\n";
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(8) "Foo::bar" string(8) "Foo::baz" string(8) "Foo::bar" string(8) "Foo::baz" string(8) "Foo::bat" bat!
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/c9XaY on line 32
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/c9XaY on line 32
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/c9XaY on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/c9XaY on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/c9XaY on line 10
Process exited with code 255.