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<?php namespace Foo; class Foo { public function bar() { } } function test (callable $arg) { echo "CHECK"; } namespace Toto; $foo = new \Foo\Foo(); var_dump(is_callable(array($foo, 'bar'))); var_dump(is_callable(array(0 => $foo, 1 => 'bar'))); test(array($foo, 'bar')); test(array(0 => $foo, 1 => 'bar'));
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.2 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(true) bool(true) Fatal error: Uncaught Error: Call to undefined function Toto\test() in /in/kcMbl:24 Stack trace: #0 {main} thrown in /in/kcMbl on line 24
Process exited with code 255.
Output for 7.3.0 - 7.3.1
bool(true) bool(true) Fatal error: Uncaught Error: Call to undefined function test() in /in/kcMbl:24 Stack trace: #0 {main} thrown in /in/kcMbl on line 24
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
bool(true) bool(true) Fatal error: Call to undefined function Toto\test() in /in/kcMbl on line 24
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/kcMbl on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/kcMbl on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/kcMbl on line 3
Process exited with code 255.

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