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Bug #15186 define/mysql_connect problem
Submitted: 2002-01-23 15:20 UTC Modified: 2002-09-13 06:27 UTC
Votes:4
Avg. Score:4.2 ± 0.8
Reproduced:3 of 3 (100.0%)
Same Version:2 (66.7%)
Same OS:3 (100.0%)
From: derek at bluegenesis dot com Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 4.2.0-dev OS: Linux
Private report: No CVE-ID: None
View Developer Edit
 [2002-01-23 15:20 UTC] derek at bluegenesis dot com 
Previous to version 4.1.1, using define() to define a handle to a MySQL connection worked fine:

define(DB, mysql_connect(host,user,pass));

In PHP 4.1.1, if the above is done, then the script will hang for a long time (for a minute or so) if other mysql connections are attempted to be made.

i.e.:

function hang_mysql()
{
  define(DB1, mysql_connect(host,user,pass));
  define(DB2, mysql_connect(host,user,pass));
}

function doesnt_hang()
{
  $db1 = mysql_connect(host,user,pass);
  $db2 = mysql_connect(host,user,pass);
}

This wasn't a problem in PHP 4.0.6 and older versions.

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 [2002-01-25 00:22 UTC] yuw at NO_SPAM dot msj dot biglobe dot ne dot jp 
The same probrem occur with PostgreSQL.

This script will hang.

<?php
  define ("DBCONN01",pg_connect("dbname=db01 user=username"));
  define ("DBCONN02",pg_connect("dbname=db02 user=username"));
  pg_exec(DBCONN01,"select * from hogehoge");
  pg_exec(DBCONN02,"select * from fugafuga");
?>

RedhatLinux6.2(en) + php4.1.1 + PostgreSQL7.1.3
 [2002-01-25 01:01 UTC] yohgaki@php.net 
deifne() works like a macro somewhat is 4.0.6.
It segfaults with 4.1.x and 4.2.0.

This is a scripting engine problem.
 [2002-01-25 06:09 UTC] yohgaki@php.net 
For now, do not make resource constant. PHP tries to delete the value twice and segfaults, if type is resource.
 [2002-09-13 06:27 UTC] iliaa@php.net 
This bug has been fixed in CVS.

In case this was a PHP problem, 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/.
 
In case this was a documentation problem, the fix will show up soon at
http://www.php.net/manual/.

In case this was a PHP.net website problem, the change will show
up on the PHP.net site and on the mirror sites in short time.
 
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