PHP file processing classes Splfileobject and Splfileinfo

File Processing classes:

Splfileinfo {/* Method */public __construct (String $file _name) public int getatime (void)//Get last access time for file public string g Etbasename ([string $suffix])//Gets the base name of the file without path information, the parameter can be a file suffix, and if there is a parameter returns the base name of the file without that suffix. public int getctime (void)//Returns the timestamp of the last change in the article. public string getextension (void)//Gets the file name extension public splfileinfo getfileinfo ([string $class _name])//Returns the file path and name as an object  public string GetFileName (void)//Get file name without path public int getgroup (void)//Get file group, return group Idpublic int Getinode (void )//Get File Index node public string getlinktarget (void)//Get file link target public int getmtime (void)//Get last Modified time public int Getowne R (void)//Gets the owner of the file public string getpath (void)//Gets the file path, without the file name and the last slash public Splfileinfo getpathinfo ([string $CL Ass_name])//Return Path object public string getpathname (void)//Get file path public int getperms (void)//Get file permissions public string g Etrealpath (void)//Get file absolute path, if file does not exist, return falsepublic int getsize (void)//Return file size, Unit bytes public string getType (void)/ /return file type, mayis file, link, dirpublic bool isdir (void)//Determine if it is a directory, is put back to true otherwise return falsepublic bool IsExecutable (void)//Judge whether the file can be executed, return TR UE, otherwise return falsepublic bool Isfile (void)//If the file exists and is a normal file (not a link), returns True, otherwise returns falsepublic bool Islink (void)//Determine if the file is a connection,  Not return falsepublic bool IsReadable (void)//Determine whether the file is readable, readable return truepublic bool iswritable (void)//Determine if the file is writable, writable return Truepublic Splfileobject openFile ([string $open _mode = "R" [, bool $use _include_path = False [, resource $context = NULL]])//Received Fetch file object information public void Setfileclass ([string $class _name = ' Splfileobject "]) public void Setinfoclass ([string $class _name = "Splfileinfo"]) public void __tostring (void)//Returns the file path and name as a string}

How to use:

$info = new Splfileinfo ($file _name);

Splfileobject {/* constant */const integer drop_new_line = 1; Const integer READ_AHEAD = 2; Const integer SKIP_EMPTY = 4; const The integer read_csv = 8;/* Method */public String|array current (void)//Returns the contents of the present line of the file public bool eof (void)//detect if the file is to the end, if Returns true to the end, otherwise returns falsepublic bool Fflush (void)///outputs buffered content to a file, returns true on success, or FALSE on failure. public string fgetc (void)//read file by character public array fgetcsv ([String $delimiter = "," [, String $enclosure = "\" "[, str ing $escape = "\ \"]])//Read CSV file public string fgets (void)//Read file by row public string Fgetss ([string $allowable _tags  ])//Read the file by line and remove HTML markup public bool Flock (int $operation [, int & $wouldblock])//File lock or unlock, return TRUE or false/* parameter: lock_sh Shared lock (Read). LOCK_EX exclusive Lock (write). Lock_un release Lock (shared or exclusive).   LOCK_NB (Additional lock) If you do not want flock () to block when locked, you should add a lock after the above lock (not supported on Windows) flock (LOCK_EX+LOCK_NB); Exclusive lock plus additional lock flock (LOCK_UN+LOCK_NB); */public int Fpassthru (void)//output file pointer after all data and characters public int fputcsv (array $fields)//One-dimensional array is entered as a row in the CSV file, returning the length of the write string or FA Lsepublic string fread (int $length)//reads the specified number of bytes from the file, returns the read string or Falsepublic mixed fscanf (string $format [, mixed &$ ...] Reads a row from the file and resolves the/* example in the specified mode: $file = new Splfileobject ("Misc.txt"); while ($userinfo = $file->fscanf ("%s%s%s") {List ($    Name, $profession, $countrycode) = $userinfo; Do something with $name $profession $countrycode}*/public int fseek (int $offset [, int $whence = Seek_set])//move by Byte The file pointer position,/*seek_set sets the file pointer to the specified byte position (the default is the mode). Seek_cur sets the file pointer to the current position plus the specified byte position. Seek_end sets the file pointer to the end of the file with the specified byte position (the bytes are often negative). Public array fstat (void)//Gets the file information, returns the *//* numeric subscript associated key name as an array (from PHP 4.0.6) Description 0devdevice number-device name 1inoinode number-inode numbers 2modeinode protection Mode-inode protected Mode 3nlinknumber of links-was Number of connections 4uiduserid of owner-user id5gidgroupid of owner-owner group Id6rdevdevice type, if inode device *-device type, if Inode device 7sizesize in bytes-bytes of file size 8atimetime of last access (Unix timestamp)-Previous access Time (Unix timestamp) 9mtimetime of modification (Unix timestamp)-Last modified Time (Unix timestamp) 10ctimetimeof last Changes (Unix timestamp)-Time to Change (Unix timestamp) 11blksizeblocksize of filesystem IO *-file system io block size 12blocksnumber of BL Ocks allocated-the number of occupied blocks * is always 0 under Windows. *-Valid only on systems that support the st_blksize type. Other systems (such as Windows) return-1. */public int Ftell (void)//Returns the current file position, file pointer position public bool Ftruncate (int $size)//truncates the file to the specified length, if the length is greater than the length of the file is empty (the file open method has a shadow public int fwrite (string $str [, int $length])//writes $STR string to the file, write $length length only. Put back the number of bytes written or nullpublic array getcsvcontrol (void)//gets the delimiter and enclosure character used for parsing CSV fields.  public int getflags (void)//gets the flags set for a instance of Splfileobject as an integer.public int getmaxlinelen (void)//Returns the maximum number of bytes read in a row (if set), default is 0public int key (void)//Gets the current line number, if not set. public void Next (void)//move to the next line public void rewind (void)//Return to the first line public void seek (int $line _pos)//Navigate to the file to specify the line Publi c void Setcsvcontrol ([String $delimiter = "," [, String $enclosure = "\" "[, string $escape =" \ \ "]]) public void SETF Lags (int $flags public void Setmaxlinelen (int $max _len)//Set file reads the maximum number of bytes of a row, if the file has 10 characters per line, but sets the maximum read to public bool valid (void)//Check whether the file bottom is reached Part, not reaching the bottom returns TRUE, Arrival returns FALSE.}

Usage:

$file = new Splfileobject ("Misc.txt", ' r+ ');
while (! $file->eof ()) {
echo $file->current ();
$file->next ();
}

Common file processing methods:

<span style= "FONT-SIZE:18PX;" ><span style= "FONT-SIZE:18PX;" >/** * Get file specifies the number of rows range data * @param unknown $filename file name * @param number $startLine start line * @param number $endLine End line * @param string $method * @return Multitype: */function getfilelines ($filename, $startLine = 1, $endLine = A, $method = ' RB    ') {$content = array ();    $count = $endLine-$startLine;    $fp = new Splfileobject ($filename, $method); $FP->seek ($startLine-1); Go to Nth row, the Seek method parameter counts from 0 for ($i = 0; $i <= $count; + + $i) {$content [] = $fp->current ();//current () get the Forward Content $fp->next ();            The next line if ($fp->eof ()) {Array_pop ($content);        Break }} return Array_filter ($content); Array_filter filter: False,null, '}/** * get the last line of the article * @param string $res file path/name */function Get_last_line ($res) {$fp = FOP    En ($res, ' R ');    if (false = = $fp) {return ' error ';    } fseek ($fp, -1,seek_end);    $s = "; while (($c = fgetc ($fp))!== false)   {if ($c = = "\ n" && $s) break; $s = $c.        $s;    Fseek ($FP,-2, seek_cur);    } fclose ($FP); return $s;} </span></span>

PHP file processing classes Splfileobject and Splfileinfo