From: dirk dot gerigk at atraveo dot de
Operating system: Linux
PHP version: Irrelevant
Package: *Compile Issues
Bug Type: Bug
Bug description:class_exists behavior while compile
Description:
------------
PHP Version 5.3.9-ZS5.6.0
Is it an Complie Error or is it wanted in that way how it works!
Please see the "Test Script" & "Actual Result".
Only way to go around it (Force negative class_exists check and braces ):
if(!class_exists('test')){
class test {}
}
For me it seems to be that the Compiler complies the hole file and declare
directly the given class in the file.
Only doesnt declare if the class defenition is within a function.
But why can i change the result via 'test' | $t='test' ??
And see "Actual Result" as second question.
Test script:
---------------
//fileA.php - test is not included yet!!
if(class_exists('test')) die('complier has included test');
class test {}
//wont work - doesnt include the test class
//fileB.php - test is not included yet!!
if(class_exists($t='test')) die('wont never happen');
class test {}
//works - includes test class
Note: if u try that code with eval() both cases wont work!
eval("\$t='test'; if(class_exists(\$t)){ die('complier has included test');
} class test {}");
Expected result:
----------------
In thing it is no really cool to always force "class definitions"
in an negative "class_exists" check and then drop the class code within the
{}.
And i cannot really behind the diff. behavior on the eval() tryout.
Please Note the add in "Actual Result".
Actual result:
--------------
//see "Test Script" and here is an crazy tryout on this issue:
error_reporting(E_ALL);
$t='test'; if(class_exists($t,false)){ echo ('complier has included '.$t);}
class test {public $var='1';}
class test {public $var='2';}
What did you expect?
Compile Error before running any Script???
So this:
Fatal error: Cannot redeclare class test in C:\xampp\htdocs\js\in.php on
line 5
Or this:
complier has included test
Fatal error: Cannot redeclare class test in C:\xampp\htdocs\js\in.php on
line 5
Test it!
I thing this behavior is a little bit wired. Maybe only for me ;)
Thanks for the time.
--
Edit bug report at https://bugs.php.net/bug.php?id=64036&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=64036&r=trysnapshot54
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Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=64036&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=64036&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=64036&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=64036&r=needtrace
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Try newer version: https://bugs.php.net/fix.php?id=64036&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=64036&r=support
Expected behavior: https://bugs.php.net/fix.php?id=64036&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=64036&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=64036&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=64036&r=globals
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MySQL Configuration Error: https://bugs.php.net/fix.php?id=64036&r=mysqlcfg
