Just a quick question. If I have a script that calls another script while running, is it possible for the second script to reference a variable in the first script and if so, how. Is it scriptname.sh:$VARIABLE for a global variable and can you do scriptname.sh:function $VARIABLE or am I off my... (1 Reply)
Hi All,
I have declared a variable in script1 and assign a value for it. In script2 i'll call script1 and then I want the value of variables set in script1.
I have tried with export, but in vain.
How can I achive this?
Below is the two scripts.
--script1
#!/usr/bin/ksh
echo $1... (1 Reply)
Hey all,
I'm wondering how you pass variable's that are defined in one script to another script that's been called by that first script.....
Best regards,
Jaz (1 Reply)
My awk script searches for specified patterns in a text file and stores these values into mem variables.
Once this is done I want to Insert these values into a table.
How can I avail of the variable values outside the scope of awk script....
One method that I have tried is to write the... (7 Replies)
Heres an example.....
<~/abc>$ cat textfile
line 1
line 2
line 3
line 4
line 5
<~/abc>$ cat try.sh
#/bin/ksh
for runs in 1 2 3
do
A=$runs
echo "Inside A : $A"
done
echo "Outside A : $A" <- works fine (1 Reply)
I call my script with two parameters
myscript.sh aaa bbb
What is the way to access $1 and $2 values inside a function? I call the function like this
myfuntion $1 $1
but inside of the function, $1 and $2 are empty. Any suggestions? thank you in advanced. (1 Reply)
Hi ,
I'm trying to change the variable value in a while loop , however its not working it seems that the problem with subshells while reading the file.
#!/bin/sh
FLAG=0;
cat filename | while read data
do
FLAG=1;
done
echo $FLAG
Should display 1 instead displays 0 (13 Replies)
If I set a variable within a while-read loop, sometimes it's local to the loop, sometimes it's global, depending on how the loop is set up. I'm testing this on a Debian Lenny system using both bash and dash with the same results.
For example:
# Pipe command into while-read loop
count=
ls -1... (2 Replies)
Hi All,
i have written below script, and out put i am looking for both variable PRIMARY_CONF and $STANDBY_CONF but i am getting below error
d1.sh: line 64:
------------------------------
line 64 is:
if -a ; then
----------------------------------
please let me know where is the... (9 Replies)
Discussion started by: amar1208
9 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)