All,
I've basic knowlege on understanding UNIX Shell Programming. Right now I need to write a script for the following requirement. Kindly help me or suggest me how to write a Shell script.
I've 8 .csv files that are containing "Detail" records. Each file getting more than 1 million. Another... (3 Replies)
Hi,
I have a pointer file ptr.txt.
There may be any number of files mentioned in the ptr.txt file
eg: cat ptr.txt
/home/abc.txt
/home/pqr.txt
/home/xyz.txt
I have to read this pointer file and merge the files given in the pointer file
so that final file say... (1 Reply)
Hi, guys. I have one question:
I have two files: passwd and shadow (the number of records in these files are not equal)the contents of them are below:
passwd:
**************
ftp:x:24:24:
sshd:x:71:65:
uucp:x:10:14:
brownj:x:5005:1000:
sherrys: x :5006:1000:
...
*************
... (2 Replies)
Hi, I have a question that I cannot solve.
if I have a file like this (lets say "x-values.dat"):
x1
x2
x3
another file like this (lets say "y-values.dat"):
y1
y2
y3
y4
and another file like this (lets say "p-values.dat"):
p1
p2
p3
...
p12
How can I get this output?
x1 y1 p1
x1 y2... (16 Replies)
Hi guys,
I have a question which might be easy to answer but I don't how to do it.
The thing is I need to make a program in C which creates a file with all the content from the files in \etc.
I'm not new to C language but to UNIX.
I've read somewhere I need to use functions like f_read... (2 Replies)
Dear programmers,
I have a question about conditionally merging multiple files and having their file names in the first column.
Input files:
file.1.extension file.2.extension file.3.extension file.4.extension ... file.1000.extension
where each file looks like this (with multiple lines):... (5 Replies)
Hi, I need help with merging two files. My requirement is as below:
File 1:
MachineA
MachineB
File 2:
Process1
Process2
Desired File:
MachineA Process1
MachineB Process2
If file 2 contains only one entry Process1, then second line in the desired output should be:
MachineA Process1... (1 Reply)
Hi All,
I am trying to merge all the text files into one file using below snippet
cat /home/Temp/Test/Log/*.txt >> all.txt
But it seems it is not working.
I have multiple files like Output_ServerName1.txt, Output_ServreName2.txt
I want to merge each file into one single file and... (6 Replies)
Hello
Below is my requirement
I have 3 files A1.txt , A2.txt and A3.txt . A2 is dynamically generating file
I want the merge of A1,A2 and A3 in A2.txt
Could you please help? (3 Replies)
Discussion started by: Pratik4891
3 Replies
LEARN ABOUT PHP
session_start
SESSION_START(3) 1 SESSION_START(3)session_start - Start new or resume existing sessionSYNOPSIS
bool session_start (void )
DESCRIPTION session_start(3) creates a session or resumes the current one based on a session identifier passed via a GET or POST request, or passed via
a cookie.
When session_start(3) is called or when a session auto starts, PHP will call the open and read session save handlers. These will either be
a built-in save handler provided by default or by PHP extensions (such as SQLite or Memcached); or can be custom handler as defined by ses-
sion_set_save_handler(3). The read callback will retrieve any existing session data (stored in a special serialized format) and will be
unserialized and used to automatically populate the $_SESSION superglobal when the read callback returns the saved session data back to PHP
session handling.
To use a named session, call session_name(3) before calling session_start(3).
When session.use_trans_sid is enabled, the session_start(3) function will register an internal output handler for URL rewriting.
If a user uses ob_gzhandler or similar with ob_start(3), the function order is important for proper output. For example, ob_gzhandler must
be registered before starting the session.
RETURN VALUES
This function returns TRUE if a session was successfully started, otherwise FALSE.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | If a session fails to start, then FALSE is |
| | returned. Previously TRUE was returned. |
| | |
| 4.3.3 | |
| | |
| | As of PHP 4.3.3, calling session_start(3) after |
| | the session was previously started will result in |
| | an error of level E_NOTICE. Also, the second ses- |
| | sion start will simply be ignored. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
A session example: page1.php
<?php
// page1.php
session_start();
echo 'Welcome to page #1';
$_SESSION['favcolor'] = 'green';
$_SESSION['animal'] = 'cat';
$_SESSION['time'] = time();
// Works if session cookie was accepted
echo '<br /><a href="page2.php">page 2</a>';
// Or maybe pass along the session id, if needed
echo '<br /><a href="page2.php?' . SID . '">page 2</a>';
?>
After viewing page1.php, the second page page2.php will magically contain the session data. Read the session reference for information on
propagating session ids as it, for example, explains what the constant SID is all about.
Example #2
A session example: page2.php
<?php
// page2.php
session_start();
echo 'Welcome to page #2<br />';
echo $_SESSION['favcolor']; // green
echo $_SESSION['animal']; // cat
echo date('Y m d H:i:s', $_SESSION['time']);
// You may want to use SID here, like we did in page1.php
echo '<br /><a href="page1.php">page 1</a>';
?>
NOTES
Note
To use cookie-based sessions, session_start(3) must be called before outputing anything to the browser.
Note
Use of zlib.output_compression is recommended instead of ob_gzhandler(3)
Note
This function sends out several HTTP headers depending on the configuration. See session_cache_limiter(3) to customize these head-
ers.
SEE ALSO
$_SESSION, The session.auto_start configuration directive , session_id(3).
PHP Documentation Group SESSION_START(3)