3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f($req, $opt = null, $params) { printf('$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 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Optional parameter $opt declared before required parameter $params is implicitly treated as a required parameter in /in/dcV4a on line 2 Fatal error: Uncaught ArgumentCountError: Too few arguments to function f(), 1 passed in /in/dcV4a on line 7 and exactly 3 expected in /in/dcV4a:2 Stack trace: #0 /in/dcV4a(7): f(1) #1 {main} thrown in /in/dcV4a on line 2
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Deprecated: Required parameter $params follows optional parameter $opt in /in/dcV4a on line 2 Fatal error: Uncaught ArgumentCountError: Too few arguments to function f(), 1 passed in /in/dcV4a on line 7 and exactly 3 expected in /in/dcV4a:2 Stack trace: #0 /in/dcV4a(7): f(1) #1 {main} thrown in /in/dcV4a on line 2
Process exited with code 255.
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught ArgumentCountError: Too few arguments to function f(), 1 passed in /in/dcV4a on line 7 and exactly 3 expected in /in/dcV4a:2 Stack trace: #0 /in/dcV4a(7): f(1) #1 {main} thrown in /in/dcV4a on line 2
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.20
Warning: Missing argument 3 for f(), called in /in/dcV4a on line 7 and defined in /in/dcV4a on line 2 Notice: Undefined variable: params in /in/dcV4a on line 4 $req: 1; $opt: 0; number of params: 0 Warning: Missing argument 3 for f(), called in /in/dcV4a on line 8 and defined in /in/dcV4a on line 2 Notice: Undefined variable: params in /in/dcV4a on line 4 $req: 1; $opt: 2; number of params: 0 $req: 1; $opt: 2; number of params: 1 $req: 1; $opt: 2; number of params: 1 $req: 1; $opt: 2; number of params: 1
Output for 7.0.0 - 7.0.14
Warning: Missing argument 3 for f(), called in /in/dcV4a on line 7 and defined in /in/dcV4a on line 2 Notice: Undefined variable: params in /in/dcV4a on line 3 $req: 1; $opt: 0; number of params: 0 Warning: Missing argument 3 for f(), called in /in/dcV4a on line 8 and defined in /in/dcV4a on line 2 Notice: Undefined variable: params in /in/dcV4a on line 3 $req: 1; $opt: 2; number of params: 0 $req: 1; $opt: 2; number of params: 1 $req: 1; $opt: 2; number of params: 1 $req: 1; $opt: 2; number of params: 1
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5
Warning: Missing argument 3 for f() in /in/dcV4a on line 2 $req: 1; $opt: 0; number of params: 0 Warning: Missing argument 3 for f() in /in/dcV4a on line 2 $req: 1; $opt: 2; number of params: 0 $req: 1; $opt: 2; number of params: 1 $req: 1; $opt: 2; number of params: 1 $req: 1; $opt: 2; number of params: 1
preferences:
256.06 ms | 402 KiB | 314 Q