Bug #81144 [Opn->Nab]: Cuckoo egg

Edit report at https://bugs.php.net/bug.php?id=81144&edit=1 ID: 81144 Updated by: cmb@php.net Reported by: wojtek at uniwizard dot com Summary: Cuckoo egg -Status: Open +Status: Not a bug Type: Bug Package: Variables related Operating System: Alpine Linux 3.13 PHP Version: 7.4.20 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: That is expected behhavior. From the docs[1]: | Declared types of reference parameters are checked on function | entry, but not when the function returns, so after the function | had returned, the argument's type may have changed. [1] <https://www.php.net/manual/en/language.types.declarations.php#language.types.declarations.misc> Previous Comments: ------------------------------------------------------------------------ [2021-06-16 09:23:47] wojtek at uniwizard dot com Description: ------------ Using the references of function/method arguments of a specific type, I have the option to "throw" a variable of a specific type with a value of a different type than the specified one. Sample scipt started by simply: "php test.php" Test script: --------------- <?php function test_function(int &$variableByReference, $value) { var_dump(['result 1 from inside test_function()' => $variableByReference]); $variableByReference = $value; var_dump(['result 2 from inside test_function()' => $variableByReference]); } $testVar1 = 234; $testValue = 'cuckoo egg'; test_function($testVar1, $testValue); var_dump(['result 3 from outside test_function()' => $testVar1]); Expected result: ---------------- I expect, when set variable "$testValue = 'cuckoo egg';" and start script, to get an error message something like this: "Fatal error: Uncaught TypeError: Argument 1 passed to test_function() must be of the type int, string given". This means the value of the variable is tested ONLY on SET value of reference, not RETURNED by reference value. Actual result: -------------- The script set anything to reference without testing return value (by reference). $ php test.php array(1) { ["result 1 from inside test_function()"]=> int(234) } array(1) { ["result 2 from inside test_function()"]=> string(10) "cuckoo egg" } array(1) { ["result 3 from outside test_function()"]=> string(10) "cuckoo egg" } ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=81144&edit=1