Bug #71986 [NEW]: Nested foreach assign-by-reference creates broken variables

From: joshdifabio at gmail dot com Operating system: All PHP version: 7.0.5 Package: SOAP related Bug Type: Bug Bug description:Nested foreach assign-by-reference creates broken variables Description: ------------ Nested foreach loops using assign-by-reference produce variables which, when passed to SoapClient, cause errors. We discovered this bug when passing data returned by the official AWS DynamoDB client to SoapClient, but reproduce it below with a few lines of PHP. https://github.com/aws/aws-sdk-php/blob/3.17.5/src/DynamoDb/Marshaler.php#L285 Test script: --------------- <?php $client = new SoapClient(null, ['uri' => '', 'location' => '']); $data = [[null]]; foreach ($data as &$value) { foreach ($value as &$_value) { $_value = 'foo'; } } $client->__soapCall('call', $data); Expected result: ---------------- PHP Fatal error: Uncaught SoapFault exception: [HTTP] Unable to parse URL (Because SoapClient attempts to retrieve the WSDL from the invalid URL provided in the test code. This error is seen in PHP5.) Actual result: -------------- Fatal error: Uncaught SoapFault exception: [Client] SOAP-ERROR: Encoding: Cannot find encoding -- Edit bug report at https://bugs.php.net/bug.php?id=71986&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71986&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71986&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71986&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71986&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71986&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71986&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71986&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71986&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71986&r=support Expected behavior: https://bugs.php.net/fix.php?id=71986&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71986&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71986&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71986&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71986&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71986&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71986&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71986&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71986&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71986&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71986&r=mysqlcfg