php导入csv到MySql数据库的例子

/**
* 将csv文件导入到mysql数据库
* edit: bbs.it-home.org
*/
$databasehost = "localhost";
$databasename = "test";
$databasetable = "sample";
$databaseusername ="test";
$databasepassword = "";
$fieldseparator = ",";
$lineseparator = "\n";
$csvfile = "filename.csv";
/********************************/
/* Would you like to add an ampty field at the beginning of these records?
/* This is useful if you have a table with the first field being an auto_increment integer
/* and the csv file does not have such as empty field before the records.
/* Set 1 for yes and 0 for no. ATTENTION: don't set to 1 if you are not sure.
/* This can dump data in the wrong fields if this extra field does not exist in the table
/********************************/
$addauto = 0;
/********************************/
/* Would you like to save the mysql queries in a file? If yes set $save to 1.
/* Permission on the file should be set to 777. Either upload a sample file through ftp and
/* change the permissions, or execute at the prompt: touch output.sql && chmod 777 output.sql
/********************************/
$save = 1;
$outputfile = "output.sql";
/********************************/
if (!file_exists($csvfile)) {
        echo "File not found. Make sure you specified the correct path.\n";
        exit;
}
$file = fopen($csvfile,"r");
if (!$file) {
        echo "Error opening data file.\n";
        exit;
}
$size = filesize($csvfile);
if (!$size) {
        echo "File is empty.\n";
        exit;
}
$csvcontent = fread($file,$size);
fclose($file);
$con = @mysql_connect($databasehost,$databaseusername,$databasepassword) or die(mysql_error());
@mysql_select_db($databasename) or die(mysql_error());
$lines = 0;
$queries = "";
$linearray = array();
foreach(split($lineseparator,$csvcontent) as $line) {
        $lines++;
        $line = trim($line," \t");
        $line = str_replace("\r","",$line);
        /************************************
        This line escapes the special character. remove it if entries are already escaped in the csv file
        ************************************/
        $line = str_replace("'","\'",$line);
        /*************************************/
        $linearray = explode($fieldseparator,$line);
        $linemysql = implode("','",$linearray);
        if($addauto)
                $query = "insert into $databasetable values('','$linemysql');";
        else
                $query = "insert into $databasetable values('$linemysql');";
        $queries .= $query . "\n";
        @mysql_query($query);
}
@mysql_close($con);
if ($save) {
        if (!is_writable($outputfile)) {
                echo "File is not writable, check permissions.\n";
        }
        else {
                $file2 = fopen($outputfile,"w");
                if(!$file2) {
                        echo "Error writing to the output file.\n";
                }
                else {
                        fwrite($file2,$queries);
                        fclose($file2);
                }
        }
}
echo "在csv文件中共找到多少 $lines 条记录.\n";
?>