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Bug #15186 define/mysql_connect problem
Submitted: 2002-01-23 15:20 UTC Modified: 2002-09-13 06:27 UTC
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
 [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.


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.

  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]
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]
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]
This bug has been fixed in CVS.

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