Bug #71167 [NEW]: Missing documentation, that type declaration doesn't support aliases

From: daniel dot korner at tu-dortmund dot de Operating system: PHP version: 7.0.1 Package: Documentation problem Bug Type: Bug Bug description:Missing documentation, that type declaration doesn't support aliases Description: ------------ Just recently I found out that type declaration does not support aliases[1]. This is a piece of information that is currently missing in the documentation[2]. Therefore, I propose to add this information to the documentation. Maybe together with my test script and a detailed explanation of what the error means. [1] http://marc.info/?l=php-general&m=145030898711430&w=2 [2] http://php.net/manual/en/functions.arguments.php#functions.arguments.type-declaration Test script: --------------- <?php function bar(boolean $foo): boolean{return $foo;} var_dump(bar((bool)true)); ?> Expected result: ---------------- bool(true) Actual result: -------------- PHP Fatal error: Uncaught TypeError: Argument 1 passed to bar() must be an instance of boolean, boolean given, called in ./example4.php:2 Stack trace: #0 ./example4.php(3): bar(true) #1 {main} thrown in ./example4.php on line 2 -- Edit bug report at https://bugs.php.net/bug.php?id=71167&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71167&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71167&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71167&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71167&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71167&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71167&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71167&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71167&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71167&r=support Expected behavior: https://bugs.php.net/fix.php?id=71167&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71167&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71167&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71167&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71167&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71167&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71167&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71167&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71167&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71167&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71167&r=mysqlcfg