Hi, Guys ...
I want to know how to use to 2 processes (A & B) communicating with each others through 2 pipes (Pipe1 & Pinpe2) :
such that process A write to Pipe1 and Process B read from Pipe1
and process B write to Pipe2 and Process A read from Pipe2 .
Does anyone have an idea about... (1 Reply)
I'd like to make a script that I can execute every time I sign on to my linux box that keeps track of the time and allows to me to add a remark to a file. So basically once I log in, I run the script, and it outputs the date and time to a text file (log.txt). But that isn't my problem.
I need... (1 Reply)
I am using system running on red hat linux 4.
I had connected health measuring machine to the serial port and configured it
stty -F /dev/ttyS0 9600 -parenb cs8 -cstopb
this machine requires a command to be passed to it for giving output. I am unable to pass command hexa format(0x68) to the... (4 Replies)
Hello,
I would like to know if it is possible to communicate between two terminals on seperate computers for free - e.g. not using proprietary software or using the built in UNIX terminals on operating systems of the UNIX flavor.
Thanks,
photray94 (2 Replies)
i want to know that my serial port ( pci slot with 2 port ) is working fine and communicating
is there any way to know the serialport is working and communicating?
please help (3 Replies)
Hello!
I am working on an application which reads environmental instruments which have serial ports. The application requires a serial port to be present to talk to the device (i.e. /dev/ttyS0 ). In some instances the environmental devices will be 100's of yards away from the computer, so a... (5 Replies)
$./a.out smtp.gmail.com 25
220 mx.google.com ESMTP 9sm2923369yxf.23
250 mx.google.com at your service
220 2.0.0 Ready to start TLS
after handshake
Common Name: smtp.gmail.com
after get cert dn
-----BEGIN SSL SESSION PARAMETERS-----... (0 Replies)
This is my situation
DOS pc serial cable (sl0) Linux Pc eth1
192.168.0.10 <-------------------->192.168.0.2 <------------>192.168.0.1 (router)
I connected the linux pc and the dos pc with a SLIP (serial line internet protocol), so they can communicate in the sl0 interface.
... (3 Replies)
I have a simple client/server program I am using for learning purposes.
I have it setup so that after server is setup and listening it than goes into a loop where it accepts incoming client connections. After each connection, the client socket is than passed to a thread routine where it can be... (3 Replies)
Hi there,
I have a Debian server (192.168.1.1) connected through ethernet to a RS232 device servers (192.168.1.5) that is then connected through RS232 to a Video Projector.
The idea is that I want to send commands to the video projector (eg. turn on/off) via the device server.
According to... (4 Replies)
Discussion started by: chebarbudo
4 Replies
LEARN ABOUT PHP
sqlite_open
SQLITE_OPEN(3)SQLITE_OPEN(3)sqlite_open - Opens an SQLite database and create the database if it does not existSYNOPSIS
resource sqlite_open (string $filename, [int $mode = 0666], [string &$error_message])
DESCRIPTION
Object oriented style (constructor): SQLiteDatabase::__construct (string $filename, [int $mode = 0666], [string &$error_message])
Opens an SQLite database or creates the database if it does not exist.
PARAMETERS
o $filename
- The filename of the SQLite database. If the file does not exist, SQLite will attempt to create it. PHP must have write permis-
sions to the file if data is inserted, the database schema is modified or to create the database if it does not exist.
o $mode
- The mode of the file. Intended to be used to open the database in read-only mode. Presently, this parameter is ignored by the
sqlite library. The default value for mode is the octal value 0666 and this is the recommended value.
o $error_message
- Passed by reference and is set to hold a descriptive error message explaining why the database could not be opened if there was
an error.
RETURN VALUES
Returns a resource (database handle) on success, FALSE on error.
EXAMPLES
Example #1
sqlite_open(3) example
<?php
if ($db = sqlite_open('mysqlitedb', 0666, $sqliteerror)) {
sqlite_query($db, 'CREATE TABLE foo (bar varchar(10))');
sqlite_query($db, "INSERT INTO foo VALUES ('fnord')");
$result = sqlite_query($db, 'select bar from foo');
var_dump(sqlite_fetch_array($result));
} else {
die($sqliteerror);
}
?>
NOTES
Tip
On Unix platforms, SQLite is sensitive to scripts that use the fork() system call. If you do have such a script, it is recommended
that you close the handle prior to forking and then re-open it in the child and/or parent. For more information on this issue, see
The C language interface to the SQLite library in the section entitled Multi-Threading And SQLite.
Tip
It is not recommended to work with SQLite databases mounted on NFS partitions. Since NFS is notoriously bad when it comes to lock-
ing you may find that you cannot even open the database at all, and if it succeeds, the locking behaviour may be undefined.
Note
Starting with SQLite library version 2.8.2, you can specify :memory: as the $filename to create a database that lives only in the
memory of the computer. This is useful mostly for temporary processing, as the in-memory database will be destroyed when the process
ends. It can also be useful when coupled with the ATTACH DATABASE SQL statement to load other databases and move and query data
between them.
Note
SQLite is safe mode and open_basedir aware.
SEE ALSO sqlite_popen(3), sqlite_close(3), sqlite_factory(3).
PHP Documentation Group SQLITE_OPEN(3)