php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login
Bug #15565 AND operation errors on datas from MySQL Table
Submitted: 2002-02-15 06:01 UTC Modified: 2002-04-30 00:00 UTC
From: daniel dot alazet at libertysurf dot fr Assigned:
Status: No Feedback Package: Math related
PHP Version: 4.1.1 OS: any
Private report: No CVE-ID: None
View Add Comment Developer Edit
Welcome! If you don't have a Git account, you can't do anything here.
You can add a comment by following this link or if you reported this bug, you can edit this bug over here.
(description)
Block user comment
Status: Assign to:
Package:
Bug Type:
Summary:
From: daniel dot alazet at libertysurf dot fr
New email:
PHP Version: OS:

 

 [2002-02-15 06:01 UTC] daniel dot alazet at libertysurf dot fr
Hello
Can I submit a strange problem PHP / MySQL ?
From a very simple table, 1 key ( BYTE ), 2 vars ( INTEGER )
I initialise two records whith some values.
I read the first var from first record and second var from second record.
I do the AND ( & ) functiun on the two vars and I get a wrong result.
I join my test script to my request.
Please send problem analysis to daniel.alazet@libertysurf.fr
Best regards.

<html>

<head>
<title>Functiun AND Check</title>
</head>

<?php
// Data Base Open.
    $dbcnx = mysql_connect("localhost");
    if (!$dbcnx)
    {  echo( "<P>No access to Data Base Server.</P>" );
       exit();
    }
    if (! @mysql_select_db("BaseTest") )
    {  echo( "<P>No access to Data Base.</P>" );
       exit();
    }
// Table Cr?ation.
    $sql = "CREATE TABLE TEST (
           ".     " Num TINYINT UNSIGNED not null AUTO_INCREMENT,
           ".     " V1 INT (10) UNSIGNED not null,
           ".     " V2 INT (10) UNSIGNED not null,
           ".     " PRIMARY KEY (Num),
           ".     " UNIQUE (Num))
           ".     " comment = 'Table de Test.';"; 
    $crt = mysql_query($sql);
// First record create.
    $x = 0Xffffffff;
    $sql = "INSERT INTO TEST SET
            ".   " V1='$x';";
    $ce = mysql_query($sql);
// Second record create.
    $x = 0X0f0f0f0f; 
    $sql = "INSERT INTO TEST SET
            ".   " V2='$x';";
    $ce = mysql_query($sql);
// Vars initialisation .
    $a = 0;
    $b = 0;
// First record Read.
    $rt = MYSQL_QUERY("SELECT V1 FROM TEST WHERE (Num = 1)") or die("Erreur No: ".mysql_error());
    $ct = mysql_fetch_array($rt);
    if ($ct)
    {   $a = $ct[V1];
    }
    mysql_free_result ($rt);
// Second record read.
    $rt = MYSQL_QUERY("SELECT V2 FROM TEST WHERE (Num = 2)") or die("Erreur No: ".mysql_error());
    $ct = mysql_fetch_array($rt);
    if ($ct)
    {   $b = $ct[V2];
    }
    mysql_free_result ($rt);
// AND functiun on results and display.    
    $x = $a & $b;
    echo ("Var A = ".DecBin($a)."<br>");
    echo ("Var B = ".DecBin($b)."<br>");   
    echo ("AND Result = ".DecBin($x)."<br>");
// Correct display for vars.
// Waiting AND Result = 1111000011110000111100001111
// I get   AND Result = 1100010101010011001
// Where the error is?.
?>
</body>
</html>

Patches

Add a Patch

Pull Requests

Add a Pull Request

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2002-02-16 05:44 UTC] sander@php.net
Works fine for me. Does the following script work for you?

$a = 0xFFFFFFFF;
$b = 0x0F0F0F0F;
$x = $a & $b;
echo decbin($a)."\n".decbin($b)."\n".decbin($x)."\n";

What OS are you running?

(reclassified)

 [2002-04-30 00:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 
PHP Copyright © 2001-2020 The PHP Group
All rights reserved.
Last updated: Mon Aug 03 21:01:24 2020 UTC