PHP file operation functions (special topic)

The topic on PHP file operation functions includes a summary of various functions of PHP processing files, their usage and detailed case demonstrations, as well as selected video tutorials on PHP file operations organized by PHP Chinese website. As well as related technical articles, everyone is welcome to collect and study!

1: What does the PHP file operation function mean?

There are a variety of functions in PHP that can be used to create, read, upload, and edit files. These functions are file operation functions and are a collection of functions.

2: What are the PHP file operation functions?

Quick overview of PHP file system functions:

basename — 返回路径中的文件名部分
chgrp — 改变文件所属的组
chmod — 改变文件模式
chown — 改变文件的所有者
clearstatcache — 清除文件状态缓存
copy — 拷贝文件
delete — 参见 unlink 或 unset
dirname — 返回路径中的目录部分
disk_free_space — 返回目录中的可用空间
disk_total_space — 返回一个目录的磁盘总大小
diskfreespace — disk_free_space 的别名
fclose — 关闭一个已打开的文件指针
fdatasync — Synchronizes data (but not meta-data) to the file
feof — 测试文件指针是否到了文件结束的位置
fflush — 将缓冲内容输出到文件
fgetc — 从文件指针中读取字符
fgetcsv — 从文件指针中读入一行并解析 CSV 字段
fgets — 从文件指针中读取一行
fgetss — 从文件指针中读取一行并过滤掉 HTML 标记
file_exists — 检查文件或目录是否存在
file_get_contents — 将整个文件读入一个字符串
file_put_contents — 将一个字符串写入文件
file — 把整个文件读入一个数组中
fileatime — 取得文件的上次访问时间
filectime — 取得文件的 inode 修改时间
filegroup — 取得文件的组
fileinode — 取得文件的 inode
filemtime — 取得文件修改时间
fileowner — 取得文件的所有者
fileperms — 取得文件的权限
filesize — 取得文件大小
filetype — 取得文件类型
flock — 轻便的咨询文件锁定
fnmatch — 用模式匹配文件名
fopen — 打开文件或者 URL
fpassthru — 输出文件指针处的所有剩余数据
fputcsv — 将行格式化为 CSV 并写入文件指针
fputs — fwrite 的别名
fread — 读取文件（可安全用于二进制文件）
fscanf — 从文件中格式化输入
fseek — 在文件指针中定位
fstat — 通过已打开的文件指针取得文件信息
fsync — Synchronizes changes to the file (including meta-data)
ftell — 返回文件指针读/写的位置
ftruncate — 将文件截断到给定的长度
fwrite — 写入文件（可安全用于二进制文件）
glob — 寻找与模式匹配的文件路径
is_dir — 判断给定文件名是否是一个目录
is_executable — 判断给定文件名是否可执行
is_file — 判断给定文件名是否为一个正常的文件
is_link — 判断给定文件名是否为一个符号连接
is_readable — 判断给定文件名是否可读
is_uploaded_file — 判断文件是否是通过 HTTP POST 上传的
is_writable — 判断给定的文件名是否可写
is_writeable — is_writable 的别名
lchgrp — 修改符号链接的所有组
lchown — 修改符号链接的所有者
link — 建立一个硬连接
linkinfo — 获取一个连接的信息
lstat — 给出一个文件或符号连接的信息
mkdir — 新建目录
move_uploaded_file — 将上传的文件移动到新位置
parse_ini_file — 解析一个配置文件
parse_ini_string — 解析配置字符串
pathinfo — 返回文件路径的信息
pclose — 关闭进程文件指针
popen — 打开进程文件指针
readfile — 输出文件
readlink — 返回符号连接指向的目标
realpath_cache_get — 获取真实目录缓存的详情
realpath_cache_size — 获取真实路径缓冲区的大小
realpath — 返回规范化的绝对路径名
rename — 重命名一个文件或目录
rewind — 倒回文件指针的位置
rmdir — 删除目录
set_file_buffer — stream_set_write_buffer 的别名
stat — 给出文件的信息
symlink — 建立符号连接
tempnam — 建立一个具有唯一文件名的文件
tmpfile — 建立一个临时文件
touch — 设定文件的访问和修改时间
umask — 改变当前的 umask
unlink — 删除文件

3: Common usage of PHP file operation functions (examples)

Selected articles and video tutorials compiled below They all contain practical cases to teach you step by step how to use common file operation functions:

1, "PHP File Basic Operation" (Video)

2, "PHP Implementation of File Upload Video Tutorial》(Video)

3, "PHP Introductory Video Tutorial One Week to Learn PHP" (Video)

Note: The chapters in this video that contain file-related operation tutorials are as shown below:

4, "php file operation series summary (continued) Update~)》(Article)

5.《Read excel file content and obtain cell data using PHP》(Article)

6. "Use PHP to convert the content of the txt file into an array and obtain the specified content by the number of lines" (article)

7. " Detailed explanation of the PHP file upload method and Its information analysis》 (graphic video)

8, "Detailed explanation of how to obtain file size in PHP" (graphic video)

9 , "PHP gets the content of the txt file and converts it into an array" (Picture, text and video)

10, "Read Excel file information and content with PHP" (Picture Text and video)

11. "What are the simple ways to upload multiple files in PHP" (Text and video)

12. "php uses multiple Attributes realize multi-file upload and information analysis》(graphics, text and video)

In the process of learning PHP, file operation is the most basic and very important knowledge point, but if you want to really get PHP development In addition to being proficient in file operations, skills include other knowledge points, such as PHP arrays, PHP loops, object-oriented, forms, sessions, cookies, etc., so for PHP beginners, I recommend " A copy of PHP in 2022" Please check the learning path! 》, everyone is welcome to refer to and study!

Related recommendations: 《php session session (topic)》|《php cookie (topic)》|《PHP ARRAY Array function (special topic)》

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