Bug #70682 [NEW]: extract() removes any references to array

From: marc at phpbb dot com Operating system: Ubuntu Linux PHP version: 7.0Git-2015-10-09 (Git) Package: Arrays related Bug Type: Bug Bug description:extract() removes any references to array Description: ------------ Actual version output (php7 nightly): PHP 7.1.0-dev (cli) (built: Oct 8 2015 19:09:26) ( NTS ) The extract() function removes any references to an array. While the supplied test script works fine on prior PHP versions like 5.5.x and 5.6.x, it does no longer work on the current PHP7 nightly. Prior to running extract(), the variable $var and its content is a reference to the initial array passed to the test() function. After the call to it, this is no longer the case. According to debug_zval_dump(), the array itself is still a reference. The content of the array however is not. I suspect this might have been caused by this as it seems related: https://bugs.php.net/bug.php?id=70250 Test script: --------------- <?php function main() { $foo = array('meh' => 1); var_dump($foo); test($foo); var_dump($foo); } function test(&$var) { $function = function($test) { return array('var' => $test); }; extract($function($var)); $var['bar'] = 5; } main(); Expected result: ---------------- array(1) { 'meh' => int(1) } array(2) { 'meh' => int(1) 'bar' => int(5) } Actual result: -------------- array(1) { ["meh"]=> int(1) } array(1) { ["meh"]=> int(1) } -- Edit bug report at https://bugs.php.net/bug.php?id=70682&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70682&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70682&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70682&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=70682&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=70682&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=70682&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=70682&r=needscript Try newer version: https://bugs.php.net/fix.php?id=70682&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=70682&r=support Expected behavior: https://bugs.php.net/fix.php?id=70682&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=70682&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=70682&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=70682&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70682&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=70682&r=dst IIS Stability: https://bugs.php.net/fix.php?id=70682&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=70682&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=70682&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=70682&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=70682&r=mysqlcfg