From: csaba at alum dot mit dot edu
Operating system:
PHP version: 5CVS-2005-09-11 (snap)
PHP Bug Type: Scripting Engine problem
Bug description: eval/new COM => hang on com_print_typeinfo
Description:
------------
If I do eval('$com=new COM("WScript.Shell");');
then gettype($com) is the empty string
while com_print_typeinfo($com) leads to the CLI / Apache error dialog box
asking whether I want to send Microsoft a report about it.
Nevertheless, the $com object is (at least somewhat) valid because I can
subsequently (if I didn't do a com_print_typeinfo) do other things with
it. Thus, gettype is incorrect, and com_print_typeinfo should not crash
PHP.
Csaba Gabor from Vienna
PS. Uncomment any of the 3 new COM lines, and it runs
as expected.
Marked as a Scripting Engine Problem since the
problem seems to start in the eval line.
Reproduce code:
---------------
<?php
print "<pre>\n";
$oEnv = newCOM("WScript.Shell")->Environment("process");
foreach ($oEnv as $idx=>$val) print "$idx: $val\n";
print "</pre>";
function newCOM($comSpec) {
$eval = '$newCom = new COM("' . $comSpec . '");';
print ("going to eval: $eval\n");
try { eval($eval); }
catch (Exception $e) {
output("Could not load COM: $comSpec"); return null; }
//$newCOM = new COM("WScript.Shell");
//$newCOM = new COM(&$comSpec);
//$newCOM = new COM($comSpec);
print "newCOM has gettype: " . gettype($newCOM) . "\n";
print " typename: " . typename($newCOM) . "\n\n";
com_print_typeinfo($newCOM);
return $newCom;
}
function typename($objCOM) {
if (is_null($objCOM)) return null;
$oScript = new COM("MSScriptControl.ScriptControl");
$oScript->language = "VBScript";
$oScript->addObject("objCom",$objCOM);
return $oScript->eval("typename(objCom)");
}
?>
Expected result:
----------------
After the 'going to eval' line, I expect to see:
newCOM has gettype: object
typename: IWshShell3
Actual result:
--------------
newCOM has gettype: NULL
typename:
followed by a PHP crash
If you remove the com_print_typeinfo line, the rest of the code executes
as expected. In other words, the COM object functions so the gettype is
still wrong.
--
Edit bug report at http://bugs.php.net/?id=34463&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=34463&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=34463&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=34463&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=34463&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=34463&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=34463&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=34463&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=34463&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=34463&r=support
Expected behavior: http://bugs.php.net/fix.php?id=34463&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=34463&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=34463&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=34463&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=34463&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=34463&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=34463&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=34463&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=34463&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=34463&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=34463&r=mysqlcfg
