I'm leery enough about jamming everything into one variable, jamming multiple lines into multiple arrays -- plus your useless use of cat | awk | sed | cut | kitchen | sink makes me think you might be attacking this problem from the wrong angle.
This is shell. You don't have easy, complex datatypes, and array$i doesn't work and never will. The hacks that would allow it to work are invariably gargantuan security holes because the same code that would allow you to evaluate array$i would also evaluate array`rm -Rf ~/home`. You don't want to worry about arbitrary code execution every time you want to use an array.
If I absolutely had to store all that information I'd use one array. It's just as easy to split it later as it is this instant, so just put everything in the one array.
But ideally, you could do your actual processing in that loop instead of storing everything and doing your processing later.
Say I write something like the following:
var1=1
var2=2
for int in 1 2
do
echo "\$var$int"
done
I want the output to be:
1
2
Instead I get something like:
$var1
$var2 (2 Replies)
Hi All,
I have a requirement to zip and compress files with dynamic names (which includes date and time component in their names) needs to be compressed with same name.
for example I have a file T.30.SLS_ORD.SO.27.2_2_2.20080623.041415.dat which needs to archived as... (1 Reply)
Hi All ,
I am having confusion in a shell script. Please guide me.
I need to get multiple files (number of files vary time to time, file names are separated by '|') using FTP get from the remote server.
Actually, i call the FTP function in a loop. At the last step, i need to move all the get... (3 Replies)
Hi All,
Shell is ksh
I've given portion of the script here to explain the problem.
It will accept 2 input parameters .
in_file1=$1
in_file2=$2
outbound_dir=/home/outbound
for i in 1 2
do
eval file$i=$outbound_dir/\$in_file$i
eval echo "filename is \$file$i"
... (4 Replies)
Hi,
I'm just trying to use a dynamic index for some array elements that I'm accessing within a loop. Specifically, I want to access an array at variable position $counter and then also at location $counter + 1 and $counter + 2 (the second and third array positions after it) but I keep getting... (0 Replies)
Hi,
I have a data in a file like below -
andy 22 abc 30000 wallstreet
paul 30 xyz 40000 martstreet
john 35 abc 50000 martstreet
I want to search number of employees working in a particular company. Below query executes perfectly -
awk '/abc/{ COUNT ++; }END { print "number of... (3 Replies)
Hey everyone. Thanks for looking at this.
I'm trying to create a table with the dynamic name of TableName + today's date.
My variables are all happily created but the system chokes when I try to create the new table name example:
Set @BFBW = CONCAT("BFBW", CURDATE());
Select @BFBW;
... (2 Replies)
Simple enough problem I think, I just can't seem to get it right.
The below doesn't work as intended, it's just a function defined in a much larger script:
CheckValues() {
for field in \
Group_ID \
Group_Title \
Rule_ID \
Rule_Severity \
... (2 Replies)
I have a .CSV file (frequency - weekly) whose header contains the year-week value in two of the columns which keeps changing every week. For an instance please see below.
Column1,Column2,Column3,Column4,Column5,Column6,Column7,Column8,Column9,Column10,Column11,Column12,Column13,201420... (4 Replies)
Hi guys
I'm a beginner in fortran. So excuse me for my naivety, let me briefly describe what I was trying to do. I have let's say 2 files named reac-1 and reac-2. After opening these files I've to do some calculations, close these files and open the same files again in a loop. So my faulty code... (6 Replies)
Discussion started by: saleheen
6 Replies
LEARN ABOUT PHP
list
LIST(3) 1 LIST(3)list - Assign variables as if they were an arraySYNOPSIS
array list (mixed $var1, [mixed $...])
DESCRIPTION
Like array(3), this is not really a function, but a language construct. list(3) is used to assign a list of variables in one operation.
PARAMETERS
o $var1
- A variable.
RETURN VALUES
Returns the assigned array.
EXAMPLES
Example #1
list(3) examples
<?php
$info = array('coffee', 'brown', 'caffeine');
// Listing all the variables
list($drink, $color, $power) = $info;
echo "$drink is $color and $power makes it special.
";
// Listing some of them
list($drink, , $power) = $info;
echo "$drink has $power.
";
// Or let's skip to only the third one
list( , , $power) = $info;
echo "I need $power!
";
// list() doesn't work with strings
list($bar) = "abcde";
var_dump($bar); // NULL
?>
Example #2
An example use of list(3)
<table>
<tr>
<th>Employee name</th>
<th>Salary</th>
</tr>
<?php
$result = $pdo->query("SELECT id, name, salary FROM employees");
while (list($id, $name, $salary) = $result->fetch(PDO::FETCH_NUM)) {
echo " <tr>
" .
" <td><a href="info.php?id=$id">$name</a></td>
" .
" <td>$salary</td>
" .
" </tr>
";
}
?>
</table>
Example #3
Using nested list(3)
<?php
list($a, list($b, $c)) = array(1, array(2, 3));
var_dump($a, $b, $c);
?>
int(1)int(2)int(3)
Example #4
Using list(3) with array indices
<?php
$info = array('coffee', 'brown', 'caffeine');
list($a[0], $a[1], $a[2]) = $info;
var_dump($a);
?>
Gives the following output (note the order of the elements compared in which order they were written in the list(3) syntax):
array(3) {
[2]=>
string(8) "caffeine"
[1]=>
string(5) "brown"
[0]=>
string(6) "coffee"
}
NOTES
Warning
list(3) assigns the values starting with the right-most parameter. If you are using plain variables, you don't have to worry about
this. But if you are using arrays with indices you usually expect the order of the indices in the array the same you wrote in the
list(3) from left to right; which it isn't. It's assigned in the reverse order.
Warning
Modification of the array during list(3) execution (e.g. using list($a, $b) = $b) results in undefined behavior.
Note
list(3) only works on numerical arrays and assumes the numerical indices start at 0.
SEE ALSO each(3), array(3), extract(3).
PHP Documentation Group LIST(3)