The number of rows to get files

// 获取文件行数
function lines($fileName)
{
    $fp = fopen($fileName, "r");
    $line = 0;
    while (!feof($fp)) {
        //每次读取1M
        if ($data = fread($fp, 1024 * 1024 * 1)) {
            //计算读取到的行数
            $num = substr_count($data, "\n");
            $line += $num;
        }
    }
    fclose($fp);
    return $line;
}

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Origin www.cnblogs.com/phonecom/p/10986464.html