而且,存储的行的长度是可变的.

这是代码.文件也是700kB不是mB.

private static function readscoreFile($scoreFile)
{
    $file = file($scoreFile);
    $relations = array();

    for($i = 1; $i < count($file); $i++)
    {
        $relation = explode("\t",trim($file[$i]));
        $relation = array(
                        'pwId_1' => $relation[0],'pwId_2' => $relation[1],'score' => $relation[2],);
        if($relation['score'] > 0)
        {
            $relations[] = $relation;
        }
    }

    unset($file);
    return $relations;
}