MySql backup?
01-25-2011, 05:28 AM,
#1
MySql backup?
so i did some google look ups and i came across a few things, and i see you dont have cron jobs anymore?

/usr/bin/mysqldump -u dbuser -pdbpass --databases dbname > /home/accountname/dbbackup.sql
and
mysqlbackup("localhost","yerdatabase","yerusername","yerpassword","/home/sites/site90/web/backup/sqldata.txt", false);
PHP Code:
<?
function mysqlbackup($host,$dbname, $uid, $pwd, $output, $structure_only)  
{  

    //this function creates a text file (or output to a HTTP connection), that when parsed through MYSQL's telnet client, will re-create the entire database  

    //Parameters:  
    //    $host: usually "localhost" but depends on where the MySQL database engine is mounted  
    //    $dbname : The MySQL database name  
    //    $uid : the database's username (not your account's), leave blank if none is required  
    //    $pwd : the database's password  
    //    $output : this is the complete filespec for the output text file, or if you want the result SQL to be sent back to the browser, leave blank.  
    //    $structure_only : set this to true if you want just the schema of the database (not the actual data) to be output.   

    if (strval($output)!="") $fptr=fopen($output,"w"); else $fptr=false;  

    //connect to MySQL database  
    $con=mysql_connect("localhost",$uid, $pwd);  
    $db=mysql_select_db($dbname,$con);  

    //open back-up file ( or no file for browser output)  

    //set up database  
    out($fptr, "create database $dbname;\n\n");  

    //enumerate tables  
    $res=mysql_list_tables($dbname);  
    $nt=mysql_num_rows($res);  

    for ($a=0;$a<$nt;$a++)  
    {  
        $row=mysql_fetch_row($res);  
        $tablename=$row[0];  

        //start building the table creation query  
        $sql="create table $tablename\n(\n";  

        $res2=mysql_query("select * from $tablename",$con);  
        $nf=mysql_num_fields($res2);  
        $nr=mysql_num_rows($res2);  

        $fl="";  

        //parse the field info first  
        for ($b=0;$b<$nf;$b++)  
        {  
            $fn=mysql_field_name($res2,$b);  
            $ft=mysql_fieldtype($res2,$b);  
            $fs=mysql_field_len($res2,$b);  
            $ff=mysql_field_flags($res2,$b);  

            $sql.="    $fn ";  

            $is_numeric=false;  
            switch(strtolower($ft))  
            {  
                case "int":  
                    $sql.="int";  
                    $is_numeric=true;  
                    break;  

                case "blob":  
                    $sql.="text";  
                    $is_numeric=false;  
                    break;  

                case "real":  
                    $sql.="real";  
                    $is_numeric=true;  
                    break;  

                case "string":  
                    $sql.="char($fs)";  
                    $is_numeric=false;  
                    break;  

                case "unknown":  
                    switch(intval($fs))  
                    {  
                        case 4:    //little weakness here...there is no way (thru the PHP/MySQL interface) to tell the difference between a tinyint and a year field type  
                            $sql.="tinyint";  
                            $is_numeric=true;  
                            break;  

                        default:    //we could get a little more optimzation here! (i.e. check for medium ints, etc.)  
                            $sql.="int";  
                            $is_numeric=true;  
                            break;  
                    }  
                    break;  

                case "timestamp":  
                    $sql.="timestamp";  
                    $is_numeric=true;  
                    break;  

                case "date":  
                    $sql.="date";  
                    $is_numeric=false;  
                    break;  

                case "datetime":  
                    $sql.="datetime";  
                    $is_numeric=false;  
                    break;  

                case "time":  
                    $sql.="time";  
                    $is_numeric=false;  
                    break;  

                default: //future support for field types that are not recognized (hopefully this will work without need for future modification)  
                    $sql.=$ft;  
                    $is_numeric=true; //I'm assuming new field types will follow SQL numeric syntax..this is where this support will breakdown  
                    break;  
            }  

            //VERY, VERY IMPORTANT!!! Don't forget to append the flags onto the end of the field creator  

            if (strpos($ff,"unsigned")!=false)  
            {  
                //timestamps are a little screwy so we test for them  
                if ($ft!="timestamp") $sql.=" unsigned";  
            }  

            if (strpos($ff,"zerofill")!=false)  
            {  
                //timestamps are a little screwy so we test for them  
                if ($ft!="timestamp") $sql.=" zerofill";  
            }  

            if (strpos($ff,"auto_increment")!=false) $sql.=" auto_increment";  
            if (strpos($ff,"not_null")!=false) $sql.=" not null";  
            if (strpos($ff,"primary_key")!=false) $sql.=" primary key";  

            //End of field flags  

            if ($b<$nf-1)  
            {  
                $sql.=",\n";  
                $fl.=$fn.", ";  
            }  
            else  
            {  
                $sql.="\n);\n\n";  
                $fl.=$fn;  
            }  

            //we need some of the info generated in this loop later in the algorythm...save what we need to arrays  
            $fna[$b]=$fn;  
            $ina[$b]=$is_numeric;  
              
        }  

        out($fptr,$sql);  

        if ($structure_only!=true)  
        {  
            //parse out the table's data and generate the SQL INSERT statements in order to replicate the data itself...  
            for ($c=0;$c<$nr;$c++)  
            {  
                $sql="insert into $tablename ($fl) values (";  

                $row=mysql_fetch_row($res2);  

                for ($d=0;$d<$nf;$d++)  
                {  
                    $data=strval($row[$d]);  
                  
                    if ($ina[$d]==true)  
                        $sql.= intval($data);  
                    else  
                        $sql.="\"".mysql_escape_string($data)."\"";  

                    if ($d<($nf-1)) $sql.=", ";  
      
                }  

                $sql.=");\n";  

                out($fptr,$sql);  

            }  

            out($fptr,"\n\n");  

        }  

        mysql_free_result($res2);      

    }  
      
    if ($fptr!=false) fclose($fptr);  
    return 0;  

}  

function out($fptr,$s)  
{  
    if ($fptr==false) echo("$s"); else fputs($fptr,$s);  
}
?>
what works best?
Reply
06-01-2011, 02:29 AM,
#2
RE: MySql backup?
I suggest you to use a script that is called "bigdump", It's the best one to restore your database of any size and no need to cronjobs, just the script (a simple php file), your sql file and a database of course
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