Große Dateien verarbeiten in PHP

Große Dateien zeilenweise in PHP verarbeiten

/*************************************************
Zeilenweise Verarbeitung von Textdateien in PHP
Author: Michael Jentsch 
Copyright (c): 2006 - all rights reserved
Version: 1.01

 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

You may contact the author of by e-mail at:
[email protected]

The latest version can be obtained from:
http://m-software.de/
*************************************************/
$filename = \"urls.txt\";
$readsize = 1024*1024; // 1MB
$linebreak = \"\\n\";

$rest = \"\";
$handle = fopen ($filename, \"r\");
$linebreaksize = strlen ($linebreak);
while (!feof($handle))
{
        $contents = $rest . fread($handle, $readsize);
        $rest = substr (strrchr ($contents, $linebreak), $linebreaksize);
        $contents = substr($contents, 0, strlen ($contents) - strlen ($rest) - $linebreaksize);
        $lines = split ($linebreak, $contents);
        $anz = count ($lines);
        for ($i = 0; $i < $anz; $i++)
        {
                $line = $lines[$i]; 
                // Hier kann man dann etwas mit der aktuellen Zeile machen
        }
}
fclose ($handle);
exit (0);

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