hi all ,
i wanted to know if someone knows how can i use
a variable inside another variable
e.g.
#!/bin/csh
foreach test(1 2 3)
set sta_$test = "2"
##now its the problem i want to echo the new var
#$sta_$test , each time with anothe num ($test = 1... (2 Replies)
I am using variable to give the location of the file I am using but I get error.
Here is the code:
LogFile=/tmp/log.email
echo -e "could not close the service - error number $error \n" > $LogFile
well this is not all the code but is enough because the problem start when I try to use the... (3 Replies)
Hi folks,
I am facing problem when I concat variables with the string.
Value for 'JDBC_CLASSES' variable looks malformed (/classes12.zip2.0KAGES)
But, my expected result for 'JDBC_CLASSES' is
/opt/API-R111/PACKAGES/jdbc/ORACLE9.2.0/classes12.zip
Am I missing anything here?
My... (10 Replies)
Hi all!
I know that environment variables can be set on the .bashrc file, but I need to set them from a sh script. I saw a lot of websites that teach this but it doesn't work for me.
#!/bin/sh
DEKTOP=$DESKTOP=:/home/rrodrigues/Desktop
export DESKTOP
if I do echo $DESKTOP returns me... (10 Replies)
can someone please explain to me what i'm doing wrong with this code:
WELT=$(awk '(($1 ~ "^${caag}$") || ($2 ~ "^${caag}$"))' /tmp/Compare.TEXT)
when run from the command line, it works. but it seems to be having a problem doing the comparison when variables are involved.
i tested from... (1 Reply)
hi,
i have a shell script which calls another shell which in turn calls another shell script.
Main_shell_script.sh
echo "In Main_shell_script.sh"
FILENAME="original.txt" # LINE 1
DST_FILENAME=$FILENAME # LINE 2
echo "FILENAME = {$FILENAME}"
echo "DST_FILENAME =... (3 Replies)
Hi All,
i have a requirement where i have to run a script with at least 25 arguements and position of arguements can also change. the unapropriate way is like below. can we achieve this in more good and precise way??
#!/bin/ksh
##script is sample.ksh
age=$1
gender=$2
class=$3
.
.
.... (3 Replies)
From the command line:
dions-air:scripts dion$ ls -l /Users/dion/Library/Application\ Support/Garmin/Devices/3816821036/History/2014-06-07-055251.TCX
-rw-r--r-- 1 dion staff 157934 7 Jun 06:55 /Users/dion/Library/Application Support/Garmin/Devices/3816821036/History/2014-06-07-055251.TCXworks... (2 Replies)
Discussion started by: dionbl
2 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)