SplFileObject::fseek
(PHP 5 >= 5.1.0, PHP 7)
SplFileObject::fseek — Seek to a position
Description
public int SplFileObject::fseek ( int $offset [, int $whence = SEEK_SET ] ) Seek to a position in the file measured in bytes from the beginning of the file, obtained by adding offset to the position specified by whence.
Parameters
offset
The offset. A negative value can be used to move backwards through the file which is useful when SEEK_END is used as the whence value.
whence
whence values are:
SEEK_SET- Set position equal tooffsetbytes.
SEEK_CUR- Set position to current location plusoffset.
SEEK_END- Set position to end-of-file plusoffset.
If whence is not specified, it is assumed to be SEEK_SET.
Return Values
Returns 0 if the seek was successful, -1 otherwise. Note that seeking past EOF is not considered an error.
Examples
Example #1 SplFileObject::fseek() example
<?php
$file = new SplFileObject("somefile.txt");
// Read first line
$data = $file->fgets();
// Move back to the beginning of the file
// Same as $file->rewind();
$file->fseek(0);
?>See Also
- fseek() - Seeks on a file pointer
← SplFileObject::fscanf
SplFileObject::fstat →
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