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<?php function foo() { yield 1; yield 2; yield 3; yield 4; } var_dump(foo() instanceof Traversable); $fooG = foo(); array_walk($fooG, function ($foo) { var_dump($foo); }); iterator_apply($fooG, function ($foo) { var_dump($foo); });
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
bool(true) Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 0 passed and exactly 1 expected in /in/XhXZ5:20 Stack trace: #0 [internal function]: {closure}() #1 /in/XhXZ5(20): iterator_apply(Object(Generator), Object(Closure)) #2 {main} thrown in /in/XhXZ5 on line 20
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 bool(true) Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 0 passed and exactly 1 expected in /in/XhXZ5:20 Stack trace: #0 [internal function]: {closure}() #1 /in/XhXZ5(20): iterator_apply(Object(Generator), Object(Closure)) #2 {main} thrown in /in/XhXZ5 on line 20
Process exited with code 255.
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
bool(true) Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 0 passed and exactly 1 expected in /in/XhXZ5:20 Stack trace: #0 [internal function]: {closure}() #1 /in/XhXZ5(22): iterator_apply(Object(Generator), Object(Closure)) #2 {main} thrown in /in/XhXZ5 on line 20
Process exited with code 255.
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
bool(true) Warning: Missing argument 1 for {closure}() in /in/XhXZ5 on line 20 Notice: Undefined variable: foo in /in/XhXZ5 on line 21 NULL
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