Bit of a newbie :D with regard to unix scripting and need some advice. Hopefully someone can help with the following:
I have a predefined set of variables as follows:
AAA_IP_ADD=1.1.1.1
BBB_IP_ADD=2.2.2.2
I have a funnction call which retrieves a value into $SUPPLIER which would be... (3 Replies)
Hi,
I am stuck with extracting values by combining 2 dynamically extracted values.
The code goes like this
#!/usr/bin/ksh
ID1="abcd"
i=1 #this is a dynamic value and keeps on changing
b="ID" #this is static
now i want the value of ID1 variable.
like echo $b$i
But echo... (1 Reply)
Friends,
I have to execute a command and store its contents into an array using shell. this is what i have tried
#!/bin/bash
disk_names = ($(`iostat -xtc | egrep -v "device|nfs" | awk '{print $1}'| tr '\n' ' ' `))
But its throwing an error message as
./test-script
./test-script:... (6 Replies)
I am reading a number of files but then I want to put the ranges
xmin xmax ymin ymax
as arrays for each file.
Any idea how I can do this???
set j = 1
echo "Welcome $i times"
while ( $j <= $i )
echo "$j"
set fname = $fin-bst-misf.xy
echo " "$fname
... (0 Replies)
Hey Gang!
So I have two Arrays. @linecount and @hit. Now these arrays contain numbers which I'm using as line placeholders on files. I need these two arrays to sync up and not repeat a number.
Here are the contents (spam alert)
@linecount
1
28
53
86
87
88
89
90
91
92
93
94 (5 Replies)
I have the following csh script which lets the use pass the following as an argument
-legend=tag1/tag2/tag3/tag4/tag5/tag6/tag7
We pass a number of tags separated by '/'. I want to save the legend tags in an array and have done as below. How can I improve on this as things are getting quite... (3 Replies)
I have requirement where I need to capture the highest values of
items from a feed that runs for N hours.
For example lets assume my data looks like this
first feed
========
appples 10
oranges 20
pears 14
second feed
==========
apples 5
oranges 30
pears 1
Last feed... (6 Replies)
hi
i have an input file in which there are diffrent values for xxxx,yyyyyy,zzzzzzz how can i arrange the dynamic values of x,y&z in a row.
input file:
xxxxx 1
yyyyyy 4
yyyyyy 5
zzzzzzzz 7
yyyyyy 13
zzzzzzzz 7
zzzzzzzz 6
yyyyyy 14
yyyyyy 12
zzzzzzzz 4
yyyyyy 4
yyyyyy 5
yyyyyy 6... (6 Replies)
Hi
I have redc containing the values 3, 6, 2, 8, and 1.
I have work containing the values 8, 2, 11, 7, and 9.
Is there a way to find the sum of redc and work?
I need to compare the sum of those two arrays to something else, so is it okay to put that into my END?
TY! (4 Replies)
Hi Guys,
I am using a function to replace the values dynamically to frame sql query by reading a file. My file will have column names like
file.txt
col_1
col_2
expected output:
select id,col_1,col_2 from (
select a.id,
a.col_1,
rank() over (ORDER BY cast(a.col_1 AS double)... (5 Replies)
Discussion started by: Master_Mind
5 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)