#48665 [NEW]: class_alias allows impossible classes

From: dams@php.net Operating system: Mac OS X Server 10.5.6 PHP version: 5.3.0RC4 PHP Bug Type: Class/Object related Bug description: class_alias allows impossible classes Description: ------------ The original class is checked, but the checks a too lax on the alias itself. I suggest the alias's name should follow the same rules as the class itself. Admittedly, the following may work in conjunction with the problem reported : <?php class foo { } var_dump(class_alias('foo', '$$$')); $b = "$$$"; $a = new $b; var_dump($a); ?> Reproduce code: --------------- <?php class foo { } var_dump(class_alias('foo', '999')); var_dump(class_alias('foo', '')); var_dump(class_alias('foo', true)); var_dump(class_alias('foo', false)); var_dump(class_alias('foo', null)); var_dump(class_alias('foo', '$$$')); var_dump(class_alias('foo', ';;')); var_dump(class_alias('foo', '"')); var_dump(class_alias('foo', '::')); ?> Expected result: ---------------- bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) Actual result: -------------- bool(true) bool(true) bool(true) PHP Warning: Cannot redeclare class in /Users/alterway/bin/php- 5.3.0RC4/Zend/tests/- on line 8 Warning: Cannot redeclare class in /Users/alterway/bin/php- 5.3.0RC4/Zend/tests/- on line 8 bool(false) PHP Warning: Cannot redeclare class in /Users/alterway/bin/php- 5.3.0RC4/Zend/tests/- on line 9 Warning: Cannot redeclare class in /Users/alterway/bin/php- 5.3.0RC4/Zend/tests/- on line 9 bool(false) bool(true) bool(true) bool(true) bool(true) -- Edit bug report at http://bugs.php.net/?id=48665&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=48665&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=48665&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=48665&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=48665&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48665&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=48665&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=48665&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=48665&r=needscript Try newer version: http://bugs.php.net/fix.php?id=48665&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=48665&r=support Expected behavior: http://bugs.php.net/fix.php?id=48665&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=48665&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=48665&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=48665&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48665&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=48665&r=dst IIS Stability: http://bugs.php.net/fix.php?id=48665&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=48665&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=48665&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=48665&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=48665&r=mysqlcfg