#27278 [Ctl->Csd]: sprintf(): global variable changing type when passed to function by value...

[iliaa]

 ID:               27278
 Updated by:       [EMAIL PROTECTED]
 Reported By:      phpbug at billix dot franken dot de
-Status:           Critical
+Status:           Closed
 Bug Type:         Variables related
 Operating System: *
 PHP Version:      4CVS, 5CVS (2004-02-16)
 New Comment:

This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.




Previous Comments:
------------------------------------------------------------------------

[2004-02-16 11:47:19] [EMAIL PROTECTED]

Little bit simpler test script:



<?php



function foo ( $a )

{

  $a=sprintf("%02d",$a);

  var_dump($a);

}



$x="02";

var_dump($x);

foo($x);

var_dump($x);



?>



Expected result:

----------------

string(2) "02"

string(2) "02"

string(2) "02"



------------------------------------------------------------------------

[2004-02-16 09:35:01] phpbug at billix dot franken dot de

Description:
------------
when I pass a variable of type string to a function (by

value not by reference!) and modify the local parameter,

the type of the global variable changes from string to int

although the local variable is still a string!



./configure --disable-cgi --enable-cli



No changes made to php-ini-dist



This worked as expected in PHP 4.3.5RC1 and earlier.

Reproduce code:
---------------
function foo ( $a )

{

  print "foo(a)="; var_dump($a);

  print "GLOBALS['x']="; var_dump($GLOBALS["x"]);

  $a=sprintf("%02d",$a);

  print "GLOBALS['x']="; var_dump($GLOBALS["x"]);

  print "foo(a)="; var_dump($a);

}



print "PHP-Version:".phpversion()."\n";

$x="02";

print "x="; var_dump($x);

foo($x);

print "x="; var_dump($x);



Expected result:
----------------
PHP-Version:4.3.5RC1

x=string(2) "02"

foo(a)=string(2) "02"

GLOBALS['x']=string(2) "02"

GLOBALS['x']=string(2) "02"

foo(a)=string(2) "02"

x=string(2) "02"



Actual result:
--------------
PHP-Version:4.3.5RC2

x=string(2) "02"

foo(a)=string(2) "02"

GLOBALS['x']=string(2) "02"

GLOBALS['x']=int(2)

foo(a)=string(2) "02"

x=int(2)




------------------------------------------------------------------------


-- 
Edit this bug report at http://bugs.php.net/?id=27278&edit=1