Setlocal creates a local scope and endlocal terminates the local scope. Any changes made within the setlocal and endlocal scope are discarded, thereby leaving the original environment unchanged. You can nest these two commands to a maximum of 32 levels. For more information about the setlocal and endlocal commands, see Setlocal and Endlocal
I think the closest equivalent effect can be created by spawning a subshell using ( ... ).
To all experts, I need some advice on how I can enter a unix command which is equivalent to the action of minimizing/maximizing an active xterm window. How can I do this (i) when control is in the active xterm window to be minimized/maximized , & (ii) when control is in a xterm window which runs... (0 Replies)
Hi,
I have a shell variable which has a value 123456:abcdeg. I want to extract the value which is present before ":". Is there any command in Unix through which I can achieve this. Please suggest.
Thanks,
Saurabh (7 Replies)
In Unix I can use command line to do a find for files older than so many days and remove them. I can also capture the date to see if its a saturday and do something different. Are there any dos/intel command line equivalent commands to do this on a windows 2003 server? This is from an... (6 Replies)
Hi Can any one please let me know which will be the PHP equivalent of the below Unix statement,
curl -H "Content-type: application/json" -H "Accept: application/json" --data-binary '{"text" : "how to check the temperature?"}' -H "X-JaskUid:111" -X POST "www.google.com/res"'Thanks in advance!!
... (0 Replies)
i know after you do something in smitty via the gui, you can click something in smitty that will show you how to do the same thing via the command line, (not using the gui) can anyone tell me how (2 Replies)
Hi,
The title of this post is a little vague but I couldn't think of what to call it.
In Unix you can perform the following command
ftp -v IPADDRESS <<END
put FILE
END
In a DOS command prompt, is it possible to do the same kind of thing that the "<<END" does?
So for example, ... (4 Replies)
I have a folder called "log" which has a few sub-folders say "fda" "fd7" "fdd" "fd6 .... "
I wish to fire the below command inside each subfolder starting with the folder with the latest time stamp.
grep "$greptime.*exit" Prod.$(hostname).log | grep $fdrdate_new
If the seach did not yield... (3 Replies)
Discussion started by: mohtashims
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)