Introduction to FileSystem File system functions in PHP and examples of using _php tutorials

basename-returns the file name portion of the path
dirname-returns the directory portion of the path

Copy the Code code as follows:
String basename (String $path [, String $suffix])
String DirName (String $path)

Example:
Copy the Code code as follows:
$path = "/home/httpd/phpha.com/index.php";
Echo basename ($path);
Echo basename ($path, '. php ');
Echo basename ($path, '. xxx ');
echo dirname ($path);
?>

Copy the Code code as follows:
Results:
index.php
Index
index.php
/home/httpd/phpha.com

Note: If the file name ends with the correct suffix, then this part will be removed as well.

chgrp-changing the group to which the file belongs
chown-changing the owner of a file
chmod-changing the file mode

Copy the Code code as follows:
BOOL Chmod (string $filename, int $mode)

Example:

Copy the Code code as follows:
chmod ('/home/phpha.txt ', 0755);
?>
copy-Copy Files

if (copy (' index.php ', ' Index.php.bak ')) {
echo ' Copy success ';
}
?>
Index.php.bak file survived in current directory

delete-See unlink or unset
unlink-Deleting files

Copy the Code code as follows:
if (unlink (' Index.php.bak ')) {
Echo ' unlink success ';
}
?>
Removed the Index.php.bak

disk_free_space-returns the free space in the directory
disk_total_space-returns the total disk size of a directory
Aliases for Diskfreespace-disk_free_space

Copy the Code code as follows:
Under Windows:
Echo Disk_free_space ("C:"), '
';
Echo Disk_total_space ("C:");
?>

Copy the Code code as follows:
Result: The number of bytes returned
17433419776
32218386432

fopen-Open File or URL
fgets-reading a line from the file pointer
feof-Test If the file pointer is at the end of the file
fread-read files (can be used safely in binary files)
fwrite-writing files (can be used safely in binary files)
fclose-Close an open file pointer

Copy the Code code as follows:
$fp = fopen (' hello.txt ', ' R '); Open a file
$n = 1;
while (!feof ($fp)) {
Echo $n, '-', fgets ($fp), '
'; Reads a row and outputs
$n + +;
}
Fclose ($FP); Close File
?>

Copy the Code code as follows:
Output:
1-welcome to my blog:
2-http://www.jb51.net

fgetc-reading characters from the file pointer
Fgetcsv-reads a row from the file pointer and resolves the CSV field
Fgetss-reads a row from the file pointer and filters out HTML tags
fputcsv-format the row as CSV and write the file pointer
Aliases for Fputs-fwrite

Copy the Code code as follows:
$fp = fopen (' hello.txt ', ' R ');
while (false!== ($char = fgetc ($fp))) {
Echo $char, '-';
}
?>

Copy the Code code as follows:
Output:
w-e-l-c-o-m-e--t-o--m-y--b-l-o-g-:---h-t-t-p-:-/-/-b-l-o-g-.-p-h-p-h-a-.-c-o-m-

file_exists-checking whether a file or directory exists

Copy the Code code as follows:
if (file_exists (' Hello.txt ')) {
Echo ' hello.txt exists ';
}else{
Echo ' hello.txt not exists ';
}
?>

[/code]
Output:
Hello.txt exists
[/code]

file_get_contents-to read the entire file into a string
file_put_contents-writing a string to a file
file-to read an entire file into an array

Copy the Code code as follows:
if ($content = file_get_contents (' hello.txt ')) {
File_put_contents (' Hello.txt.bak ', $content);
}
?>
Equivalent to copy a copy of a hello.txt
if ($content = file (' hello.txt ')) {
Print_r ($content);
}
?>
Array form, each row is an array member
Array
(
[0] = = Welcome to my blog:
[1] = Http://www.jb51.net
)

Fileatime-last access time of the file
filectime-Get the Inode modification time of the file
filegroup-get the group of files
fileinode-obtaining the Inode of the file
filemtime-Get File modification time
Fileowner-get the owner of the file
fileperms-permission to obtain a file
filesize-Get File size
filetype-getting the file type

Copy the Code code as follows:
echo fileatime (' hello.txt ');
echo filectime (' hello.txt ');
echo filegroup (' hello.txt ');
echo filemtime (' hello.txt ');
echo fileowner (' hello.txt ');
Echo substr (sprintf ('%o ', fileperms (' Hello.txt ')),-4);
echo filesize (' hello.txt ');
echo filetype (' hello.txt ');
?>

Copy the Code code as follows:
Output:
1353329003
1353329003
0
1353330002
0
0666
42
File

flock-Lightweight consultation document lock-up
fnmatch-matching file name with pattern
fflush-output buffered content to a file
fpassthru-all remaining data at the output file pointer
fscanf-formatting input from a file
fseek-positioning in the file pointer
fstat-obtaining file information from an open file pointer
ftell-returns the position of the file pointer read/write
ftruncate-truncates a file to a given length
glob-looking for file paths that match the pattern

is_dir-determines whether a given file name is a directory
is_executable-to determine if the given file name is executable
is_file-determine if the given file name is a normal file
is_link-determines whether a given file name is a symbolic connection
Is_readable-to determine whether a given file name is readable
is_uploaded_file-to determine if the file was uploaded via HTTP POST
Is_writable-determines whether a given file name can be written
Aliases for Is_writeable-is_writable
Note: The above functions are used to determine whether a file or directory conforms to the corresponding condition, and returns TRUE or false.

Lchgrp-changes Group Ownership of Symlink
Lchown-changes user ownership of Symlink
link-Establish a hard connection
Linkinfo-get information on a connection
Lstat-gives information about a file or symbolic connection
mkdir-New Directory
Move_uploaded_file-moving uploaded files to a new location
parse_ini_file-parsing a configuration file
pathinfo-return the file path information
pclose-closing Process file pointers
popen-opening a process file pointer
readfile-output a file
readlink-returns the target to which the symbolic connection is pointing
realpath-returns the normalized absolute path name
rename-renaming a file or directory
Rewind-Rewind the position of the file pointer
rmdir-Deleting a directory
Aliases for Set_file_buffer-stream_set_write_buffer
Stat-give the information of the file
symlink-establishing symbolic connections
tempnam-to create a file with a unique file name
tmpfile-Creating a temporary file
touch-setting file access and modification times
umask-Change the current umask
clearstatcache-clearing the file state cache

http://www.bkjia.com/PHPjc/735242.html www.bkjia.com true http://www.bkjia.com/PHPjc/735242.html techarticle basename-Returns the file name part of the path dirname-the directory part of the return path copy the code code as follows: String basename (String $path [, String $suffix]) string dir ...

