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<?php function f($req, $opt = null, ...$params) { // $params is an array containing the remaining arguments. printf('$req: %d; $opt: %d; number of params: %d'."\n", $req, $opt, count($params)); } f(1); f(1, 2); f(1, 2, 3); f(1, 2, 3, 4); f(1, 2, 3, 4, 5); ?>
Output for 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
$req: 1; $opt: 0; number of params: 0 $req: 1; $opt: 2; number of params: 0 $req: 1; $opt: 2; number of params: 1 $req: 1; $opt: 2; number of params: 2 $req: 1; $opt: 2; number of params: 3
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/aRPbK on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '.', expecting '&' or T_VARIABLE in /in/aRPbK on line 2
Process exited with code 255.

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