Sorta new to Unix. great site here.
I have SCO server with (5) 16 port Digi-boards and 5 line printers. For 3 years we've had no problems, till now... All of a sudden I get terminals and printers locking up. Killed the PID's for these particular situations. No help. So I disable the tty post... (10 Replies)
FOLKS ,
i have a text file that is generated automatically of an another korn shell script, i want to bring in the fifth line of the text file in to my korn shell script and look for a particular word in the line . Can you all share some thoughts on this one.
thanks...
Venu (3 Replies)
Hi All,
i ve a process,
user4 31779 2836 0 01:43 pts/6 00:00:00 sh /home/user/DATE/SUT_SCR/c.sh
like this i'll get so many process when in run ps -ef | grep pts | grep c.sh
i need to extract terminal id from this string. i.e pts/6, or sometimes pts/22 same way i need to do for... (3 Replies)
Hi,
I was doing some research and can't seem to find anything. I'm trying to automate a process by creating a script to read a csv line and column and assigning that value to a variable for the script to process it.
Also if you could tell me the line and column if it's on another work ... (3 Replies)
I have hundreds of files to process. In each file
I need to look for a pattern then
extract value(s) from next line and then
search for value(s) selected from point (2) in the same file at a specific position.
HEADER ELECTRON TRANSPORT 18-MAR-98 1A7V
TITLE CYTOCHROME... (7 Replies)
I have a LOG file which looks like this
Import started at: Mon Jul 23 02:13:01 EDT 2012
Initialization completed in 2.146 seconds.
--------------------------------------------------------------------------------
--
Import summary for Import item: PolicyInformation... (8 Replies)
Here's a situation:
I do all my work on a Mac. I have mysql installed on my mac.
1. There's a certain linux server 'server01' that provides access to
another linux server 'server02' via a pseudo terminal
So, to ssh into 'server02', I do this from my mac:
ssh -t server01... (1 Reply)
Hi,
I new to AIX, and I have been using Rocket UniData in it. I had to set up a Process for Data Exchange by assigning a unique Terminal and a Socket Port to that process. I ran the process for the first time and it was successful and after use I stopped the process. Now when I want to run it... (3 Replies)
Discussion started by: BejoyS
3 Replies
LEARN ABOUT PHP
eval
EVAL(3) 1 EVAL(3)eval - Evaluate a string as PHP codeSYNOPSIS
mixed eval (string $code)
DESCRIPTION
Evaluates the given $code as PHP.
Caution
The eval(3) language construct is very dangerous because it allows execution of arbitrary PHP code. Its use thus is discouraged.
If you have carefully verified that there is no other option than to use this construct, pay special attention not to pass any user
provided data into it without properly validating it beforehand.
PARAMETERS
o $code
- Valid PHP code to be evaluated. The code mustn't be wrapped in opening and closing PHP tags, i.e. 'echo "Hi!";' must be passed
instead of '<? echo "Hi!"; >'. It is still possible to leave and reenter PHP mode though using the appropriate PHP tags, e.g.
'echo "In PHP mode!"; ?>In HTML mode!<? echo "Back in PHP mode!";'. Apart from that the passed code must be valid PHP. This
includes that all statements must be properly terminated using a semicolon. 'echo "Hi!"' for example will cause a parse error,
whereas 'echo "Hi!";' will work. A return statement will immediately terminate the evaluation of the code. The code will be exe-
cuted in the scope of the code calling eval(3). Thus any variables defined or changed in the eval(3) call will remain visible
after it terminates.
RETURN VALUES eval(3) returns NULL unless return is called in the evaluated code, in which case the value passed to return is returned. If there is a
parse error in the evaluated code, eval(3) returns FALSE and execution of the following code continues normally. It is not possible to
catch a parse error in eval(3) using set_error_handler(3).
EXAMPLES
Example #1
eval(3) example - simple text merge
<?php
$string = 'cup';
$name = 'coffee';
$str = 'This is a $string with my $name in it.';
echo $str. "
";
eval("$str = "$str";");
echo $str. "
";
?>
The above example will output:
This is a $string with my $name in it.
This is a cup with my coffee in it.
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
Tip
As with anything that outputs its result directly to the browser, the output-control functions can be used to capture the output of
this function, and save it in a string (for example).
Note
In case of a fatal error in the evaluated code, the whole script exits.
SEE ALSO call_user_func(3).
PHP Documentation Group EVAL(3)