Edit Report a Bug

The SplFileObject class

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

Introduzione

The SplFileObject class offers an object-oriented interface for a file.

Sommario della classe

class SplFileObject extends SplFileInfo implements RecursiveIterator, SeekableIterator {

/* Costanti */

public const int DROP_NEW_LINE;

public const int READ_AHEAD;

public const int SKIP_EMPTY;

public const int READ_CSV;

/* Metodi */

public __construct(
    string $filename,
    string $mode = "r",
    bool $useIncludePath = false,
    ?resource $context = null
)

public current(): string|array|false

public eof(): bool

public fflush(): bool

public fgetc(): string|false

public fgetcsv(string $separator = ",", string $enclosure = "\"", string $escape = "\\"): array|false

public fgets(): string

public fgetss(string $allowable_tags = ?): string

public flock(int $operation, int &$wouldBlock = null): bool

public fpassthru(): int

public fputcsv(
    array $fields,
    string $separator = ",",
    string $enclosure = "\"",
    string $escape = "\\",
    string $eol = "\n"
): int|false

public fread(int $length): string|false

public fscanf(string $format, mixed &...$vars): array|int|null

public fseek(int $offset, int $whence = SEEK_SET): int

public fstat(): array

public ftell(): int|false

public ftruncate(int $size): bool

public fwrite(string $data, int $length = 0): int|false

public getChildren(): null

public getCsvControl(): array

public getFlags(): int

public getMaxLineLen(): int

public hasChildren(): false

public key(): int

public next(): void

public rewind(): void

public seek(int $line): void

public setCsvControl(string $separator = ",", string $enclosure = "\"", string $escape = "\\"): void

public setFlags(int $flags): void

public setMaxLineLen(int $maxLength): void

public __toString(): string

public valid(): bool

/* Metodi ereditati */

public SplFileInfo::getATime(): int|false

public SplFileInfo::getBasename(string $suffix = ""): string

public SplFileInfo::getCTime(): int|false

public SplFileInfo::getExtension(): string

public SplFileInfo::getFileInfo(?string $class = null): SplFileInfo

public SplFileInfo::getFilename(): string

public SplFileInfo::getGroup(): int|false

public SplFileInfo::getInode(): int|false

public SplFileInfo::getLinkTarget(): string|false

public SplFileInfo::getMTime(): int|false

public SplFileInfo::getOwner(): int|false

public SplFileInfo::getPath(): string

public SplFileInfo::getPathInfo(?string $class = null): ?SplFileInfo

public SplFileInfo::getPathname(): string

public SplFileInfo::getPerms(): int|false

public SplFileInfo::getRealPath(): string|false

public SplFileInfo::getSize(): int|false

public SplFileInfo::getType(): string|false

public SplFileInfo::isDir(): bool

public SplFileInfo::isExecutable(): bool

public SplFileInfo::isFile(): bool

public SplFileInfo::isLink(): bool

public SplFileInfo::isReadable(): bool

public SplFileInfo::isWritable(): bool

public SplFileInfo::openFile(string $mode = "r", bool $useIncludePath = false, ?resource $context = null): SplFileObject

public SplFileInfo::setFileClass(string $class = SplFileObject::class): void

public SplFileInfo::setInfoClass(string $class = SplFileInfo::class): void

public SplFileInfo::__toString(): string

}

Costanti predefinite

SplFileObject::DROP_NEW_LINE: Drop newlines at the end of a line.
SplFileObject::READ_AHEAD: Read on rewind/next.
SplFileObject::SKIP_EMPTY: Skips empty lines in the file. This requires the READ_AHEAD flag be enabled, to work as expected.
SplFileObject::READ_CSV: Read lines as CSV rows.

Indice dei contenuti

SplFileObject::__construct — Construct a new file object
SplFileObject::current — Retrieve current line of file
SplFileObject::eof — Reached end of file
SplFileObject::fflush — Flushes the output to the file
SplFileObject::fgetc — Gets character from file
SplFileObject::fgetcsv — Gets line from file and parse as CSV fields
SplFileObject::fgets — Gets line from file
SplFileObject::fgetss — Gets line from file and strip HTML tags
SplFileObject::flock — Portable file locking
SplFileObject::fpassthru — Output all remaining data on a file pointer
SplFileObject::fputcsv — Write a field array as a CSV line
SplFileObject::fread — Read from file
SplFileObject::fscanf — Parses input from file according to a format
SplFileObject::fseek — Seek to a position
SplFileObject::fstat — Gets information about the file
SplFileObject::ftell — Return current file position
SplFileObject::ftruncate — Truncates the file to a given length
SplFileObject::fwrite — Write to file
SplFileObject::getChildren — No purpose
SplFileObject::getCsvControl — Get the delimiter, enclosure and escape character for CSV
SplFileObject::getCurrentLine — Alias di SplFileObject::fgets
SplFileObject::getFlags — Gets flags for the SplFileObject
SplFileObject::getMaxLineLen — Get maximum line length
SplFileObject::hasChildren — SplFileObject does not have children
SplFileObject::key — Get line number
SplFileObject::next — Read next line
SplFileObject::rewind — Rewind the file to the first line
SplFileObject::seek — Seek to specified line
SplFileObject::setCsvControl — Set the delimiter, enclosure and escape character for CSV
SplFileObject::setFlags — Sets flags for the SplFileObject
SplFileObject::setMaxLineLen — Set maximum line length
SplFileObject::__toString — Returns the current line as a string
SplFileObject::valid — Not at EOF

add a note

User Contributed Notes 3 notes

down

Lars Gyrup Brink Nielsen ¶

11 years ago


Note that this class has a private (and thus, not documented) property that holds the file pointer. Combine this with the fact that there is no method to close the file handle, and you get into situations where you are not able to delete the file with unlink(), etc., because an SplFileObject still has a handle open.

To get around this issue, delete the SplFileObject like this:

---------------------------------------------------------------------
<?php
print "Declaring file object\n";
$file = new SplFileObject('example.txt');

print "Trying to delete file...\n";
unlink('example.txt');

print "Closing file object\n";
$file = null;

print "Deleting file...\n";
unlink('example.txt');

print 'File deleted!';
?>
---------------------------------------------------------------------

which will output:

---------------------------------------------------------------------
Declaring file object 
Trying to delete file... 

Warning: unlink(example.txt): Permission denied in file.php on line 6
Closing file object 
Deleting file... 
File deleted!
---------------------------------------------------------------------

down

marcus at synchromedia dot co dot uk ¶

10 years ago


If you want to skip blank lines when reading a CSV file, you need *all * the flags:

$file->setFlags(SplFileObject::READ_CSV | SplFileObject::READ_AHEAD | SplFileObject::SKIP_EMPTY | SplFileObject::DROP_NEW_LINE);

down

-2

rlazarotto15+dont+spam+me at gmail dot com ¶

3 years ago


Complimenting marcus at synchromedia dot co dot uk comment, you can also do something like this:

<?php

// create a SplFileObject for reading - note that there are no flags
$file = new SplFileObject('/path/to/file', 'r');

// iterate over its contents
while (!$file->eof()) {
    // get the current line
    $line  =  $file->fgets();

    // trim it, and then check if its empty
    if (empty(trim($line))) {
        // skips the current iteration
        continue;
    }
}

While this may seem like a overkill for such thing, it allows you to do some processing with the empty lines that might come (I had to do this mostly because I needed to count empty lines instead of just skipping them). Since it also trims the line before checking if it's empty, you won't get lines composed only of empty spaces (I don't know if the flags also make it trim the content before checking it).

add a note