This is very basic and very useful command for mysql. I need user registration date by date. Firstly, i calculate with PHP, after i think it must be a basic way. I found this mysql command. I hope you’ll enjoy.

SELECT DATE_FORMAT(registerdate, '%Y-%m-%d') AS dd, COUNT(id) as TotalUser FROM UserTable GROUP BY dd;

I have a big mail database but there are some dublicate email addresses. I need unique email address lists and i follow this way;

Firstly i create temporary table for unique email address

CREATE  TABLE  mail_temp (  `email` varchar( 255  )  NOT  NULL default  ''

) ENGINE  =  MyISAM;

After i add unique email address to that temp table

INSERT INTO mail_temp SELECT DISTINCT(email) FROM mail_table

I dropped my real email table

DROP TABLE mail_table;

After all, i create new mail table and moved the temporary mail table to in.

CREATE TABLE mail_table( `email` varchar( 255 ) NOT NULL default ''
) ENGINE  = MyISAM;

INSERT INTO mail_table SELECT  DISTINCT(email) FROM mail_temp;

DROP TABLE mail_temp;

Advertising agencies wants to user profile for advertisements. I need my users age. I found a little solution. I write this SQL statement for select which year my users born and group them.

SELECT count(id) AS total,YEAR(birthday) AS birth_year FROM users GROUP BY YEAR(birthday);

I blogged Php 5.2.9 Upgrade. Some of my user updated with using this entry. But i miss something in these entry. Firstly, i have to say. If you upgrade php version, you have to upgrade mysql and php-mysql.

To Upgrade Mysql and Php-Mysql tool

yum --enablerepo=remi update mysql*
yum --enablerepo=remi update php-mysql

And there one more thing, he was php4 and upgrade to 5. Firstly we can not upgrade, we install php newly.

Installing Php

yum --enablerepo=remi install php

When you install on old version, there will be somethings to change.  Their extentions directory are different
Old One
extension_dir = /usr/lib/php4

New one (Php 5)
extension_dir = /usr/lib/php/modules

And i restarted services

/etc/init.d/mysqld restart
/etc/init.d/httpd restart

I get error in httpd restart

PHP Warning:  Module ‘mysql’ already loaded in Unknown on line 0
PHP Warning:  Module ‘mysqli’ already loaded in Unknown on line 0

Because mysql is standart module in php5, we dont need load mysql in config file. I change php.ini file (/etc/php.ini) Only i add ; character, it is for comments.

;extension=mysql.so
;extension=mysqli.so

We can create dynamic sitemap with using PHP & Mysql. My example code is easy to apply your system.

<?PHP
header('content-type: text/xml');

$mysql_username = "";
$mysql_password = "";
$mysql_database = "";

$dblink = mysql_connect("localhost", "$mysql_username", "$mysql_password");
if (!$dblink) {
die('ERROR: Can not connect database' . mysql_error());
}
@mysql_select_db("$mysql_database") or die ("ERROR: Cannot select database");

echo('<'.'?xml version="1.0" encoding="UTF-8"'.'?'.'>');
echo('<urlset xmlns="http://www.google.com/schemas/sitemap/0.84">');

$contentQ = mysql_query("SELECT * FROM content_table");
while($contentR = mysql_fetch_array($contentQ))
{
$url = $contentR["url"];
$adding_date = date("Y-m-d",strtotime($contentR["adding_date"]));
echo("<url>
<loc>http://www.example.com/".$url."</loc>
<lastmod>".$adding_date."</lastmod>
</url>
");
}
$content2Q = mysql_query("SELECT * FROM content2_table");
while($content2R = mysql_fetch_array($content2Q))
{
$url = $content2R["url"];
$adding_date = date("Y-m-d",strtotime($content2R["adding_date"]));
echo("<url>
<loc>http://www.example.com/".$url."</loc>
<lastmod>".$adding_date."</lastmod>
</url>
");
}
echo("</urlset>");
?>

Google Sitemap Plugins for Wordpress
http://www.dicontas.co.uk/blog/google-sitemap-utw-tag-wordpress-plugin/
http://www.arnebrachhold.de/redir/sitemap-home/
http://www.karailiev.net/karailievs-sitemap/
http://southcoastwebsites.co.uk/wordpress/

We need get datas from last week, last month, yesterday and today. We can do it easily in MySQL.

Getting Current Date

SELECT CURDATE();

Result : 2009-06-04

Getting Last Week Datas

SELECT DATE_ADD('2009-06-04', INTERVAL 7 DAY);

Getting Last Month Datas

SELECT DATE_ADD('2009-06-04', 1 MONTH);

Getting Last Year Datas

SELECT DATE_ADD('2009-06-04', INTERVAL 1 YEAR);

And Php example for this calculations, getting last month orders

mysql_query("SELECT * FROM orders WHERE DATE_SUB(CURDATE(),INTERVAL 1 month) <= order_date")); 

For more information of Date and time functions :
http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html

login ssh, type mysqladmin. A tip if you can not remember mysql password type

mysql -uadmin -p`cat /etc/psa/.psa.shadow`

mysql> USE mysql;
mysql> SELECT * FROM user;
mysql> SET PASSWORD FOR 'username'@'hostname' = PASSWORD('password_here');
mysql> FLUSH PRIVILEGES;

Web servers uses Plain-Text form based authentication. If an attacker with access to the network traffic to and from the target host may be able to obtain login credentials for other users by sniffing the network traffic. Solutions is data sent via HTML login forms is encrypted before being sent from the client to the host. We solve this problem using encoding form with md5. But there is no standart md5() function in javascript, we find javascript md5 function with a little search (Md5 mit Javascript). We create a hidden form to our secure login. When we submit the forum our code change our “user” and “password” to md5 and send with hidden form encoded values.

Our Login Code (login.html)

<html>
<head>
<title>Login Form</title>
<script language="javascript" src="md5.js"></script>
<script language="javascript">
<!--
function passResponse() {
document.hform.user.value = MD5(document.login.user_temp.value);
document.hform.pass.value = MD5(document.login.pass_temp.value);
document.login.pass_temp.value = "";
document.hform.submit();

}
// -->
</script>
</head>

<body>
<form name="login">
Username:
<input type="text" name="user_temp" size=32 maxlength=32><br>
Password:
<input type="password" name="pass_temp" size=32 maxlength=32><br>
<input onClick="passResponse(); return false;" type="submit" name="submitbtn" value="Login now">
</form>
<form action="login.php" METHOD="POST" name="hform">
<input type="hidden" name="user">
<input type="hidden" name="pass">
</form>

</body>
</html>

login.php

<?
$user = $_POST["user"];
$pass = $_POST["pass"];
mysql_query("SELECT * FROM users WHERE MD5(username) = '$user' AND password = '$pass'");
//... Code is continue ...
?>

md5.js file

/*
 *  md5.js 1.0b 27/06/96
 *
 * Javascript implementation of the RSA Data Security, Inc. MD5
 * Message-Digest Algorithm.
 *
 * Copyright (c) 1996 Henri Torgemane. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for any purposes and without
 * fee is hereby granted provided that this copyright notice
 * appears in all copies.
 *
 * Of course, this soft is provided "as is" without express or implied
 * warranty of any kind.
 *
 *
 * Modified with german comments and some information about collisions.
 * (Ralf Mieke, ralf@miekenet.de, http://mieke.home.pages.de)
 */

function array(n) {
  for(i=0;i<n;i++) this[i]=0;
  this.length=n;
}

/* Einige grundlegenden Funktionen müssen wegen
 * Javascript Fehlern umgeschrieben werden.
 * Man versuche z.B. 0xffffffff >> 4 zu berechnen..
 * Die nun verwendeten Funktionen sind zwar langsamer als die Originale,
 * aber sie funktionieren.
 */

function integer(n) { return n%(0xffffffff+1); }

function shr(a,b) {
  a=integer(a);
  b=integer(b);
  if (a-0x80000000>=0) {
    a=a%0x80000000;
    a>>=b;
    a+=0x40000000>>(b-1);
  } else
    a>>=b;
  return a;
}

function shl1(a) {
  a=a%0x80000000;
  if (a&0x40000000==0x40000000)
  {
    a-=0x40000000;
    a*=2;
    a+=0x80000000;
  } else
    a*=2;
  return a;
}

function shl(a,b) {
  a=integer(a);
  b=integer(b);
  for (var i=0;i<b;i++) a=shl1(a);
  return a;
}

function and(a,b) {
  a=integer(a);
  b=integer(b);
  var t1=(a-0x80000000);
  var t2=(b-0x80000000);
  if (t1>=0)
    if (t2>=0)
      return ((t1&t2)+0x80000000);
    else
      return (t1&b);
  else
    if (t2>=0)
      return (a&t2);
    else
      return (a&b);
}

function or(a,b) {
  a=integer(a);
  b=integer(b);
  var t1=(a-0x80000000);
  var t2=(b-0x80000000);
  if (t1>=0)
    if (t2>=0)
      return ((t1|t2)+0x80000000);
    else
      return ((t1|b)+0x80000000);
  else
    if (t2>=0)
      return ((a|t2)+0x80000000);
    else
      return (a|b);
}

function xor(a,b) {
  a=integer(a);
  b=integer(b);
  var t1=(a-0x80000000);
  var t2=(b-0x80000000);
  if (t1>=0)
    if (t2>=0)
      return (t1^t2);
    else
      return ((t1^b)+0x80000000);
  else
    if (t2>=0)
      return ((a^t2)+0x80000000);
    else
      return (a^b);
}

function not(a) {
  a=integer(a);
  return (0xffffffff-a);
}

/* Beginn des Algorithmus */

    var state = new array(4);
    var count = new array(2);
        count[0] = 0;
        count[1] = 0;
    var buffer = new array(64);
    var transformBuffer = new array(16);
    var digestBits = new array(16);

    var S11 = 7;
    var S12 = 12;
    var S13 = 17;
    var S14 = 22;
    var S21 = 5;
    var S22 = 9;
    var S23 = 14;
    var S24 = 20;
    var S31 = 4;
    var S32 = 11;
    var S33 = 16;
    var S34 = 23;
    var S41 = 6;
    var S42 = 10;
    var S43 = 15;
    var S44 = 21;

    function F(x,y,z) {
        return or(and(x,y),and(not(x),z));
    }

    function G(x,y,z) {
        return or(and(x,z),and(y,not(z)));
    }

    function H(x,y,z) {
        return xor(xor(x,y),z);
    }

    function I(x,y,z) {
        return xor(y ,or(x , not(z)));
    }

    function rotateLeft(a,n) {
        return or(shl(a, n),(shr(a,(32 - n))));
    }

    function FF(a,b,c,d,x,s,ac) {
        a = a+F(b, c, d) + x + ac;
        a = rotateLeft(a, s);
        a = a+b;
        return a;
    }

    function GG(a,b,c,d,x,s,ac) {
        a = a+G(b, c, d) +x + ac;
        a = rotateLeft(a, s);
        a = a+b;
        return a;
    }

    function HH(a,b,c,d,x,s,ac) {
        a = a+H(b, c, d) + x + ac;
        a = rotateLeft(a, s);
        a = a+b;
        return a;
    }

    function II(a,b,c,d,x,s,ac) {
        a = a+I(b, c, d) + x + ac;
        a = rotateLeft(a, s);
        a = a+b;
        return a;
    }

    function transform(buf,offset) {
        var a=0, b=0, c=0, d=0;
        var x = transformBuffer;

        a = state[0];
        b = state[1];
        c = state[2];
        d = state[3];

        for (i = 0; i < 16; i++) {
            x[i] = and(buf[i*4+offset],0xff);
            for (j = 1; j < 4; j++) {
                x[i]+=shl(and(buf[i*4+j+offset] ,0xff), j * 8);
            }
        }

        /* Runde 1 */
        a = FF ( a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
        d = FF ( d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
        c = FF ( c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
        b = FF ( b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
        a = FF ( a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
        d = FF ( d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
        c = FF ( c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
        b = FF ( b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
        a = FF ( a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
        d = FF ( d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
        c = FF ( c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
        b = FF ( b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
        a = FF ( a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
        d = FF ( d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
        c = FF ( c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
        b = FF ( b, c, d, a, x[15], S14, 0x49b40821); /* 16 */

        /* Runde 2 */
        a = GG ( a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
        d = GG ( d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
        c = GG ( c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
        b = GG ( b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
        a = GG ( a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
        d = GG ( d, a, b, c, x[10], S22,  0x2441453); /* 22 */
        c = GG ( c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
        b = GG ( b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
        a = GG ( a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
        d = GG ( d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
        c = GG ( c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
        b = GG ( b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
        a = GG ( a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
        d = GG ( d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
        c = GG ( c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
        b = GG ( b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */

        /* Runde 3 */
        a = HH ( a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
        d = HH ( d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
        c = HH ( c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
        b = HH ( b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
        a = HH ( a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
        d = HH ( d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
        c = HH ( c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
        b = HH ( b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
        a = HH ( a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
        d = HH ( d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
        c = HH ( c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
        b = HH ( b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
        a = HH ( a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
        d = HH ( d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
        c = HH ( c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
        b = HH ( b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */

        /* Runde 4 */
        a = II ( a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
        d = II ( d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
        c = II ( c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
        b = II ( b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
        a = II ( a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
        d = II ( d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
        c = II ( c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
        b = II ( b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
        a = II ( a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
        d = II ( d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
        c = II ( c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
        b = II ( b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
        a = II ( a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
        d = II ( d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
        c = II ( c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
        b = II ( b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */

        state[0] +=a;
        state[1] +=b;
        state[2] +=c;
        state[3] +=d;

    }
    /* Mit der Initialisierung von Dobbertin:
       state[0] = 0x12ac2375;
       state[1] = 0x3b341042;
       state[2] = 0x5f62b97c;
       state[3] = 0x4ba763ed;
       gibt es eine Kollision:

       begin 644 Message1
       M7MH=JO6_>MG!X?!51$)W,CXV!A"=(!AR71,<X`Y-IIT9^Z&8L$2N'Y*Y:R.;
       39GIK9>TF$W()/MEHR%C4:G1R:Q"=
       `
       end

       begin 644 Message2
       M7MH=JO6_>MG!X?!51$)W,CXV!A"=(!AR71,<X`Y-IIT9^Z&8L$2N'Y*Y:R.;
       39GIK9>TF$W()/MEHREC4:G1R:Q"=
       `
       end
    */
    function init() {
        count[0]=count[1] = 0;
        state[0] = 0x67452301;
        state[1] = 0xefcdab89;
        state[2] = 0x98badcfe;
        state[3] = 0x10325476;
        for (i = 0; i < digestBits.length; i++)
            digestBits[i] = 0;
    }

    function update(b) {
        var index,i;

        index = and(shr(count[0],3) , 0x3f);
        if (count[0]<0xffffffff-7)
          count[0] += 8;
        else {
          count[1]++;
          count[0]-=0xffffffff+1;
          count[0]+=8;
        }
        buffer[index] = and(b,0xff);
        if (index  >= 63) {
            transform(buffer, 0);
        }
    }

    function finish() {
        var bits = new array(8);
        var        padding;
        var        i=0, index=0, padLen=0;

        for (i = 0; i < 4; i++) {
            bits[i] = and(shr(count[0],(i * 8)), 0xff);
        }
        for (i = 0; i < 4; i++) {
            bits[i+4]=and(shr(count[1],(i * 8)), 0xff);
        }
        index = and(shr(count[0], 3) ,0x3f);
        padLen = (index < 56) ? (56 - index) : (120 - index);
        padding = new array(64);
        padding[0] = 0x80;
        for (i=0;i<padLen;i++)
          update(padding[i]);
        for (i=0;i<8;i++)
          update(bits[i]);

        for (i = 0; i < 4; i++) {
            for (j = 0; j < 4; j++) {
                digestBits[i*4+j] = and(shr(state[i], (j * 8)) , 0xff);
            }
        }
    }

/* Ende des MD5 Algorithmus */

function hexa(n) {
 var hexa_h = "0123456789abcdef";
 var hexa_c="";
 var hexa_m=n;
 for (hexa_i=0;hexa_i<8;hexa_i++) {
   hexa_c=hexa_h.charAt(Math.abs(hexa_m)%16)+hexa_c;
   hexa_m=Math.floor(hexa_m/16);
 }
 return hexa_c;
}

var ascii="01234567890123456789012345678901" +
          " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"+
          "[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";

function MD5(nachricht)
{
 var l,s,k,ka,kb,kc,kd;

 init();
 for (k=0;k<nachricht.length;k++) {
   l=nachricht.charAt(k);
   update(ascii.lastIndexOf(l));
 }
 finish();
 ka=kb=kc=kd=0;
 for (i=0;i<4;i++) ka+=shl(digestBits[15-i], (i*8));
 for (i=4;i<8;i++) kb+=shl(digestBits[15-i], ((i-4)*8));
 for (i=8;i<12;i++) kc+=shl(digestBits[15-i], ((i-8)*8));
 for (i=12;i<16;i++) kd+=shl(digestBits[15-i], ((i-12)*8));
 s=hexa(kd)+hexa(kc)+hexa(kb)+hexa(ka);
 return s;
}

Sometimes, i need to convert datas for search engine optimization (SEO). I use MySQL replace command for this. Just login to phpmyadmin or any tool for run SQL command. Paste command set, change table and field name than run.

UPDATE table SET field = replace(field, 'À','A');
UPDATE table SET field = replace(field, 'Á','A');
UPDATE table SET field = replace(field, 'Â','A');
UPDATE table SET field = replace(field, 'Ã','A');
UPDATE table SET field = replace(field, 'Ä','A');
UPDATE table SET field = replace(field, 'Å','A');
UPDATE table SET field = replace(field, 'Æ','AE');
UPDATE table SET field = replace(field, 'Ç','C');
UPDATE table SET field = replace(field, 'È','E');
UPDATE table SET field = replace(field, 'É','E');
UPDATE table SET field = replace(field, 'Ê','E');
UPDATE table SET field = replace(field, 'Ë','E');
UPDATE table SET field = replace(field, 'Ì','I');
UPDATE table SET field = replace(field, 'Í','I');
UPDATE table SET field = replace(field, 'Î','I');
UPDATE table SET field = replace(field, 'Ï','I');
UPDATE table SET field = replace(field, 'Ò','O');
UPDATE table SET field = replace(field, 'Ó','O');
UPDATE table SET field = replace(field, 'Ô','O');
UPDATE table SET field = replace(field, 'Õ','O');
UPDATE table SET field = replace(field, 'Ö','O');
UPDATE table SET field = replace(field, '×','Z');
UPDATE table SET field = replace(field, 'Ø','O');
UPDATE table SET field = replace(field, 'Ù','U');
UPDATE table SET field = replace(field, 'Ú','U');
UPDATE table SET field = replace(field, 'Û','U');
UPDATE table SET field = replace(field, 'Ü','U');
UPDATE table SET field = replace(field, 'ß','ss');
UPDATE table SET field = replace(field, 'à','a');
UPDATE table SET field = replace(field, 'á','a');
UPDATE table SET field = replace(field, 'â','a');
UPDATE table SET field = replace(field, 'ã','a');
UPDATE table SET field = replace(field, 'ä','a');
UPDATE table SET field = replace(field, 'å','a');
UPDATE table SET field = replace(field, 'æ','ae');
UPDATE table SET field = replace(field, 'ç','c');
UPDATE table SET field = replace(field, 'è','e');
UPDATE table SET field = replace(field, 'é','e');
UPDATE table SET field = replace(field, 'ê','e');
UPDATE table SET field = replace(field, 'ë','e');
UPDATE table SET field = replace(field, 'ì','i');
UPDATE table SET field = replace(field, 'í','i');
UPDATE table SET field = replace(field, 'î','i');
UPDATE table SET field = replace(field, 'ï','i');
UPDATE table SET field = replace(field, 'ñ','n');
UPDATE table SET field = replace(field, 'ü','u');
UPDATE table SET field = replace(field, 'ò','o');
UPDATE table SET field = replace(field, 'ó','o');
UPDATE table SET field = replace(field, 'ô','o');
UPDATE table SET field = replace(field, 'õ','o');
UPDATE table SET field = replace(field, 'ö','o');
UPDATE table SET field = replace(field, 'ø','o');
UPDATE table SET field = replace(field, 'ù','u');
UPDATE table SET field = replace(field, 'ú','u');
UPDATE table SET field = replace(field, 'û','u');
UPDATE table SET field = replace(field, 'ÿ','y');

Firstly; you need access to your MySQL Server and maybe access to your wp-config.php file in the root of your site.

1. Go www.md5-creator.com and type in a password you want to use.Example type “123″ then copy. “123 in MD5 :” ’s result is “202cb962ac59075b964b07152d234b70″
2. Than open your MySQL database, and click the wp_users table
3. Change “user_pass” value to copied value. In our example “202cb962ac59075b964b07152d234b70″
4. Now go to your blog and log in