Question

当此文件夹中有数千条记录时，此计数仅返回1。

// TV Shows
$dir = 'G:/TV';
if ($handle = opendir($dir)) {

    /* This is the correct way to loop over the directory. */
    while (false !== ($file = readdir($handle))) {

        $check = mysql_query("SELECT * FROM tv_shows WHERE title = '$file'");
        $checkcount = mysql_num_rows($check);

        if ($checkcount == 0) {

            mysql_query("INSERT INTO tv_shows (id, title) VALUES ('', '$file')");

        }

    }

    echo count($dir)." Records Traversed!<br/>";

    closedir($handle);
}

表格结构：id，title

文件夹结构：主文件夹中的子文件夹

 G:\TV
 G:\TV\24
 G:\TV\Family Guy

Answer 1

您无法在文件夹上使用count()。试试这个

// TV Shows
$dir = 'G:/TV';
$count = 0;
if ($handle = opendir($dir)) {

    /* This is the correct way to loop over the directory. */
    while (false !== ($file = readdir($handle))) {
        $count++;
        $check = mysql_query("SELECT * FROM tv_shows WHERE title = '$file'");
        $checkcount = mysql_num_rows($check);

        if ($checkcount == 0) {

            mysql_query("INSERT INTO tv_shows (id, title) VALUES ('', '$file')");

        }

    }

    echo $count." Records Traversed!<br/>";

    closedir($handle);
}

如何返回插入的新记录数？

检查一下，刚刚移动$count++

// TV Shows
$dir = 'G:/TV';
$count = 0;
if ($handle = opendir($dir)) {

    /* This is the correct way to loop over the directory. */
    while (false !== ($file = readdir($handle))) {
        $check = mysql_query("SELECT * FROM tv_shows WHERE title = '$file'");
        $checkcount = mysql_num_rows($check);

        if ($checkcount == 0) {
            $count++;
            mysql_query("INSERT INTO tv_shows (id, title) VALUES ('', '$file')");

        }

    }

    echo $count." Records Traversed!<br/>";

    closedir($handle);
}

Answer 2

您在字符串上调用count()，而不是数组。

CodePad

Answer 3

另外一个很好的替代方法是使用php glob函数。
$dir_path = "/full/directory/path/";
$count = count(glob($dir_path . "*"));

这也将优化您的代码!!

count（）当数千条记录返回1时

3 个答案: