PHP 4 >= 4.2.0, PHP 5 < 5.1.0
dio_seek - Seeks to pos on fd from whence
Code Examples

dio_seek( resource$fd, int$pos, [int$whence = SEEK_SET] ): int

The function dio_seek is used to change the file position of the given file descriptor.



The file descriptor returned by dio_open.


The new position.


Specifies how the position pos should be interpreted:

SEEK_SET (default) - specifies that pos is specified from the beginning of the file.

SEEK_CUR - Specifies that pos is a count of characters from the current file position. This count may be positive or negative.

SEEK_END - Specifies that pos is a count of characters from the end of the file. A negative count specifies a position within the current extent of the file; a positive count specifies a position past the current end. If you set the position past the current end, and actually write data, you will extend the file with zeros up to that position.

Return Values

Example of dio_seek

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PHP Version:

Function dio_seek:

Direct IO Functions

Most used PHP functions