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<?php function test_func($arg1 = 'a', $arg2 = 'b', $arg3 = 'c', $arg4 = 'd') { return json_encode([ 'func_num_args' => func_num_args(), 'func_get_args' => func_get_args(), 'direct_args' => [$arg1, $arg2, $arg3, $arg4], ], JSON_PRETTY_PRINT); } echo test_func('hello', 'b', 'world');
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
{ "func_num_args": 3, "func_get_args": [ "hello", "b", "world" ], "direct_args": [ "hello", "b", "world", "d" ] }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/V1084 on line 5
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 '[', expecting ')' in /in/V1084 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/V1084 on line 5
Process exited with code 255.

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