Bug #71695 [Opn->Csd]: Global variables are reserved before execution

Edit report at https://bugs.php.net/bug.php?id=71695&edit=1 ID: 71695 Updated by: laruence@php.net Reported by: buglloc at yandex dot ru Summary: Global variables are reserved before execution -Status: Open +Status: Closed Type: Bug Package: Scripting Engine problem Operating System: Linux 4.4.1-2-ARC PHP Version: 7.0.3 Block user comment: N Private report: N New Comment: Automatic comment on behalf of laruence@gmail.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=186844be92d26a74ce61bd71d14053ae5be42602 Log: Fixed bug #71695 (Global variables are reserved before execution). Previous Comments: ------------------------------------------------------------------------ [2016-03-01 08:57:30] buglloc at yandex dot ru Description: ------------ I have ported some code from PHP 5 to PHP 7 and founds strange behavior - seems global variables are reserved (?) before execution. I wrote simple test code: https://3v4l.org/teWDV Is this expected backward incompatible changes or bug? This peace of code wants to provide "system" global variables w/o override existed (I know that is so ugly...), what i must do? For example, rewrite the function: function provideGlobals() { $GLOBALS += array("foo" => "foo"); } to something like this: function provideGlobals() { foreach(array("foo" => "foo") as $key => $val) { if(!isset($GLOBALS[$key])) { $GLOBALS[$key] = $val; } } } Test script: --------------- <?php function provideGlobals() { printf("Is foo exists: %d\n", array_key_exists("foo", $GLOBALS)); $GLOBALS += array("foo" => "foo"); } provideGlobals(); echo $foo; Expected result: ---------------- Is foo exists: 0 foo Actual result: -------------- Is foo exists: 1 Notice: Undefined variable: foo in /in/teWDV on line 9 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=71695&edit=1