Bug #72036 [Opn->Dup]: Reference parameters of functions fail to work properly in some cases

Edit report at https://bugs.php.net/bug.php?id=72036&edit=1 ID: 72036 Updated by: bwoebi@php.net Reported by: karl dot riedling at tuwien dot ac dot at Summary: Reference parameters of functions fail to work properly in some cases -Status: Open +Status: Duplicate Type: Bug Package: Scripting Engine problem Operating System: Linux 2.6.32-042stab PHP Version: 7.0.5 Block user comment: N Private report: N New Comment: Duplicate of bug #71914. Previous Comments: ------------------------------------------------------------------------ [2016-04-16 08:51:30] karl dot riedling at tuwien dot ac dot at Description: ------------ Functions with reference parameters that modify the value of the parameter within a switch() construct return the original value of the reference parameter rather than the modified one. This does not apply if the reference parameter is changed in an if() statement or in plain linear code; PHP 7.0.5 shows the expected behavior in these cases. This problem newly appeared with PHP 7.0.5. The test script below returns with PHP 7.0.4: PHP Version: 7.0.4 23:12:25 Before function call: 1 In function call: 2 After function call: 2 Bug with PHP 7.0.5: PHP Version: 7.0.5 21:14:06 Before function call: 1 In function call: 2 After function call: 1 Test script: --------------- function test_func (& $x) { switch ($x) { case 1: $x = 2; break; case 2: break; } echo "In function call: ".$x."<br>\n"; } $x = 1; echo date ("H:i:s")."<br>\n"; echo "Before function call: ".$x."<br>\n"; test_func ($x); echo "After function call: ".$x."<br>\n"; Expected result: ---------------- Before function call: 1 In function call: 2 After function call: 2 Actual result: -------------- Before function call: 1 In function call: 2 After function call: 1 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=72036&edit=1