PHP SPL standard library file operation (SplFileInfo and SplFileObject) examples,

PHP SPL standard library file operation (SplFileInfo and SplFileObject) examples, _PHP tutorial

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Release： 2016-07-13 09:54:29

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Instances of file operations (SplFileInfo and SplFileObject) of the PHP SPL standard library,

PHP SPL provides two classes, SplFileInfo and SplFileObject, to handle file operations.

SplFileInfo is used to obtain file details:

Copy code The code is as follows:
$file = new SplFileInfo('foo-bar.txt');

print_r(array(
'getATime' => $file->getATime(), //Last access time
'getBasename' => $file->getBasename(), //Get basename without path
'getCTime' => $file->getCTime(), //Get the inode modification time
'getExtension' => $file->getExtension(), //File extension
'getFilename' => $file->getFilename(), //Get the file name
'getGroup' => $file->getGroup(), //Get file group
'getInode' => $file->getInode(), //Get file inode
'getLinkTarget' => $file->getLinkTarget(), //Get the file link target file
'getMTime' => $file->getMTime(), //Get the last modification time
'getOwner' => $file->getOwner(), //File owner
'getPath' => $file->getPath(), //File path without file name
'getPathInfo' => $file->getPathInfo(), //SplFileInfo object of the upper-level path
'getPathname' => $file->getPathname(), //Full path
'getPerms' => $file->getPerms(), //File permissions
'getRealPath' => $file->getRealPath(), //Absolute file path
'getSize' => $file->getSize(),//File size in bytes
'getType' => $file->getType(),//File type file dir link
'isDir' => $file->isDir(), //Is it a directory
'isFile' => $file->isFile(), //Is it a file
'isLink' => $file->isLink(), //Is it a shortcut link
'isExecutable' => $file->isExecutable(), //Whether it is executable
'isReadable' => $file->isReadable(), //Whether it is readable
'isWritable' => $file->isWritable(), //Writable
));

SplFileObject inherits SplFileInfo and implements the RecursiveIterator and SeekableIterator interfaces, which are used to traverse, search, and operate files

Traverse:
Copy code The code is 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 The code is as follows:
try {
$file = new SplFileObject('foo-bar.txt');
$file->seek(2);
echo $file->current();
} catch (Exception $e) {
echo $e->getMessage();
}

Write to csv file:
Copy code The code is 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 );
}