int dio_seek ( resource fd, int pos [, int whence] )
The function dio_seek() is used to change the
file position of the file with descriptor
fd. The parameter
whence 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.
Example 1.
Setting the baud rate on a serial port
<?php
$fd = dio_open('/dev/ttyS0', O_RDWR);
dio_seek($fd, SEEK_SET, 10); // position is now at 10 characters from the start of the file
dio_seek($fd, SEEK_CUR, -2); // position is now at 8 characters from the start of the file
dio_seek($fd, SEEK_END, 5); // position is now at 5 characters from the end of the file
dio_seek($fd, SEEK_END, -10); // position is now at 10 characters past the end of the file. // The 10 characters between the end of the file and the current // position are filled with zeros.
dio_close($fd); ?>
Php dio seek Function syntax tag
dio seek php code on this is provided for your study purpose, it will guide you to know how create and design a website using php. use it to practice and train your self online
Php dio seek syntax tutorial
php tutorial guide and code design are for easy learning and programming. The code practice section provided at the top is for practising of this syntax. Use the code section up to practice your php programming online. Learning php is very easy, all you need is to use the examples on this site and practice them to perfect your skills.
