<?php
header("Content-type:text/html; charset=utf-8");
#获取路径的文件名 basename()
$path = \'/home/www/data/user.txt\';
printf("Filename: %s <br>",basename($path)); //Filename: user.txt
printf("Filename: %s <br>",basename($path,".txt"));//user
#获取路径目录 dirname()
printf("Directory path : %s <br>",dirname($path));//Directory path : /home/www/data
#获取文件大小
$file = "users.txt";
$byte = filesize($file);
echo $byte;
echo "<br>";
#计算磁盘空间
$driver = ".";
printf("remaining Mb on %s : %.2f <br>",$driver,round((disk_free_space($driver)/1048576),2));
#计算磁盘总容量
$totalSpace = disk_total_space($driver)/1048576;
//确定已使用分区
$usedSpace = $totalSpace - disk_free_space($driver)/1048576;
echo "Partition: $driver (Allocated: $totalSpace MB.
Used: $usedSpace MB.)";
echo "<br>";
# file(),将文件读入数组
$users = file(\'users.txt\');
#循环处理数组
foreach ($users as $user) {
# code...
// 解析行,检索名字和电子邮件 explode() 函数把字符串分割为数组
/* list($name,$email) = explode(\' \', $user);
$email = trim($email);//移除$email中的换行符
echo $email;*/
echo $user;
echo \'<br>\';
}
#将文件内容读入字符串变量 file_get_contents()
$userfile = file_get_contents(\'users.txt\');//将文件读入一个字符串变量
$users = explode("\n", $userfile);//将$userfile的每行放入数组
foreach ($users as $user) {
# code...
echo $user;
echo \'<br>\';
}
#将CSV文件读入数组
$ff = fopen("11.csv",\'r\');//打开文件
while(list($name,$email,$tel) = fgetcsv($ff,1024,\',\')){//将文件分解三部分
echo "<p>$name ($email) Tel. $tel</p>";
}
/* fgets()
* 返回通过打开的资源句柄读入若干个字符,或者返回遇到换行或者EOF之前读取的所有内容
* EOF,文件末尾字符
*/
$fh = fopen("users.txt","r");//为读取打开一个文本文件夹
while(!feof($fh))
echo fgets($fh);
fclose($fh);
echo "<br>";
/* fread() 忽略换行符
* 从handle指定的资源中读取length个字符,当达到EOF或读取到length个字符时,读取将停止
*/
$file = fopen("users.txt",\'r\');//打开文件
$userdate = fread($file,filesize(\'users.txt\'));//读入整个文件
fclose($file);//关闭句柄
echo $userdate.\'<br>\';
/* readfile() 读取整个文件
* 立即输出到输出缓冲区并返回读取字节数
*/
$bytes = readfile(\'users.txt\');//将文件输出到浏览器
echo $bytes.\'<br>\';
/* fscanf() 根据预定义格式读取文件
* 按照预定义格式解析资源
*/
$fh = fopen(\'22.txt\',\'r\');
while($user = fscanf($fh,\'%d-%d-%d\')){
list ($part1,$part2,$part3) = $user;
printf("part 1 : %d,part 2 : %d,part 3 : %d <br>",$part1,$part2,$part3);
}
/* fwrite() 将字符串写入文件
* 如果参数给出length,fwrite() 将写入了length个字符时停止 否则一直写入到达string 结尾才停止
*/
$destString = "hello world";
$file = fopen("users.txt",\'a\');//打开文件
fwrite($file, $destString);
fclose($file);
/* opendir(),closedir(),readdir()
* 迭代读取目录内容
*/