Req #76412 [NEW]: Nullable type default value

From: ionuthrive at yahoo dot com Operating system: All PHP version: 7.2.6 Package: PHP Language Specification Bug Type: Feature/Change Request Bug description:Nullable type default value Description: ------------ When passing null to a optional nullable type argument, the default value is overwritten. Test script: --------------- <?php function get(string $id, ?int $limit = 1, ?string $type = 'standard', ?array $options = []){ var_dump($limit); var_dump($type); } get(1, null, 'custom'); get(1, 10, null, ['my'=>'option']); Expected result: ---------------- Since 7.1 when the nullable types could be marked as null the situation where one needs to call a function while skipping some parameters is met with overwrite of the default values of the function arguments. For the above test script, when passing null and the argument is specifically declared as a nullable type, the parser should know to take the default value instead of overriding it as NULL. feature-php.php:4: 1 feature-php.php:5: string(6) "custom" feature-php.php:4: int(10) feature-php.php:5: standard Actual result: -------------- feature-php.php:4: NULL feature-php.php:5: string(6) "custom" feature-php.php:4: int(10) feature-php.php:5: NULL -- Edit bug report at https://bugs.php.net/bug.php?id=76412&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76412&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76412&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76412&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76412&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76412&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76412&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76412&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76412&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76412&r=support Expected behavior: https://bugs.php.net/fix.php?id=76412&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76412&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76412&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76412&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76412&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76412&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76412&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76412&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76412&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76412&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76412&r=mysqlcfg