SQL: Repair German "Umlaute" inside a MySQL Database. (mysqli version / PHP7 supported)

fix_umlaute.php

<?php  
/**  
* Alle kaputten Umlaute reparieren bei Umstellung von ISO->UTF8  
* Source: http://xhtmlforum.de/66480-kleines-skript-alle-umlaute-der-datenbank.html 
*  
* @project        -  
* @author        Boris Bojic <bojic@devshack.biz>  
* @copyright    Copyright (c) 2011, Boris Bojic (DevShack)  
* @version        Fri, 23 Dec 2011 13:47:11 +0100  
* @updated        -  
*  
*/  

// === [ Content / Charset ] ==============================================  
header('Content-Type: text/html; charset=utf-8');  

// PHP auch explizit auf UTF-8 setzen  
mb_internal_encoding('UTF-8');  

$db = array();  

$db['host']     = "localhost";
$db['uname']    = "";
$db['password'] = "";
$db['database'] = "";



$dbconnect = ($GLOBALS["___mysqli_ston"] = mysqli_connect($db['host'],  $db['uname'],  $db['password'])) or die ("Konnte keine Verbindung zur Datenbank aufnehmen!");  
mysqli_select_db($dbconnect, $db['database']) or die ("Fehler beim Auswählen der Datenbank!");  

((bool)mysqli_set_charset($GLOBALS["___mysqli_ston"], "utf8"));  


echo '<pre>';  


function getTables($db){  

    $result = mysqli_query($GLOBALS["___mysqli_ston"], "SHOW TABLES FROM " . $db['database']);  

    while($row = mysqli_fetch_row($result)){  
        $res[] = $row[0];  
    }  

    return $res;  

}  

function getColumns($table){  

    $table = mysqli_real_escape_string($GLOBALS["___mysqli_ston"], $table);  

    $mysqlres = mysqli_query($GLOBALS["___mysqli_ston"], "SHOW COLUMNS FROM " . $table);  
    while($row = mysqli_fetch_row($mysqlres)){  
        $res[] = $row[0];  
    }  

    return $res;  
}  

// Alle Tabellen ermitteln  
$tablesArray = getTables($db);  

// Alle Spalten pro Tabelle ermitteln und durcharbeiten  
foreach($tablesArray AS $table){  

    $affectedRows = 0;  
    $spalten = getColumns($table);  

    echo "Tabelle: " . $table . "<br />";  


    foreach($spalten AS $spalte){  

        echo "...Spalte: " . $spalte . "<br />";  

        $query = '  
        UPDATE `' . $table . '` SET  
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ü", "ü"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ä", "ä"), 
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ö", "ö"), 
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ö", "Ö"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ß", "ß"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ã ", "à"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"á", "á"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"â", "â"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ã", "ã"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ù", "ù"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ú", "ú"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"û", "û"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ù", "Ù"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ú", "Ú"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Û", "Û"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ãœ", "Ü"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ò", "ò"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ó", "ó"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ô", "ô"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"è", "è"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"é", "é"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ê", "ê"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ë", "ë"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"À", "À"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Â", "Â"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Â","Ã"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ä", "Ä"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ã…", "Å"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ç", "Ç"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"È", "È"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"É", "É"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ê", "Ê"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ë", "Ë"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ÃŒ", "Ì"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ÃŽ", "Î"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ñ", "Ñ"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ã’", "Ò"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ó", "Ó"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ô", "Ô"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Õ", "Õ"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ø", "Ø"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"Ã¥", "å"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"æ", "æ"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ç", "ç"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ì", "ì"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"í" , "í"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"î", "î"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ï", "ï"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ð", "ð"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ñ", "ñ"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"õ", "õ"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ø", "ø"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ý", "ý"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"ÿ", "ÿ"),
        `' . $spalte . '` = REPLACE(`' . $spalte . '`,"€","€") 
        ';  

        mysqli_query($GLOBALS["___mysqli_ston"], $query) OR die(mysqli_error($GLOBALS["___mysqli_ston"]) . $query);  
        $affectedRows += mysqli_affected_rows($GLOBALS["___mysqli_ston"]);  

    }  


    echo "Tabelle " . $table . " aktualisiert, Datensätze: " . $affectedRows . "<br /><br />";  

}

@Vulcanraven91 thank you! I updated the script.