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 →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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