PHP SPL Standard library file operations (Splfileinfo and Splfileobject) instance _php instance

PHP SPL provides splfileinfo and splfileobject two classes to handle file operations.

Splfileinfo used to get file details:

Copy Code code as follows:

$file = new Splfileinfo (' Foo-bar.txt ');

Print_r Array (
' Getatime ' => $file->getatime (),//Last visit time
' Getbasename ' => $file->getbasename (),//Get path-free basename
' Getctime ' => $file->getctime (),//Get Inode modification time
' GetExtension ' => $file->getextension (),//file name extension
' GetFileName ' => $file->getfilename (),//Get filename
' Getgroup ' => $file->getgroup (),//Get file group
' Getinode ' => $file->getinode (),//Get file Inode
' Getlinktarget ' => $file->getlinktarget (),//Get File link destination file
' Getmtime ' => $file->getmtime (),//Get Last modification time
' GetOwner ' => $file->getowner (),//File owner
' GetPath ' => $file->getpath (),//file path without file name
' GetPathInfo ' => $file->getpathinfo (),//Splfileinfo object of Superior Path
' GetPathName ' => $file->getpathname (),//full path
' Getperms ' => $file->getperms (),//file permissions
' Getrealpath ' => $file->getrealpath (),//File absolute path
' GetSize ' => $file->getsize (),//File size, unit byte
' GetType ' => $file->gettype (),//Files type file dir link
' Isdir ' => $file->isdir (),//Whether it is a directory
' Isfile ' => $file->isfile (),//Whether it is a file
' Islink ' => $file->islink (),//Whether it is a shortcut link
' IsExecutable ' => $file->isexecutable (),//whether executable
' IsReadable ' => $file->isreadable (),//readable
' IsWritable ' => $file->iswritable (),//Whether it can be written
));

Splfileobject inherits Splfileinfo and implements Recursiveiterator, Seekableiterator interface for traversing, locating, and manipulating files

Traverse:

Copy Code code as follows:

try {
foreach (New Splfileobject (' Foo-bar.txt ') as $line) {
Echo $line;
}
catch (Exception $e) {
echo $e->getmessage ();
}

find the specified line:

Copy Code code as follows:

try {
$file = new Splfileobject (' Foo-bar.txt ');
$file->seek (2);
echo $file->current ();
catch (Exception $e) {
echo $e->getmessage ();
}

To write to a CSV file:

Copy Code code as follows:

$list = Array (
Array (' AAA ', ' BBB ', ' CCC ', ' dddd '),
Array (' 123 ', ' 456 ', ' 7891 '),
Array (' AAA ', ' "BBB ')
);

$file = new Splfileobject (' File.csv ', ' W ');

foreach ($list as $fields) {
$file-> fputcsv ($fields);
}