They get stripped away, resulting in the following line, which eval then interprets:
Even if there was whitespace in ZONENUM, the quotations wouldn't protect it from eval. Radoulov probably had in mind something like the following (the absence of an escaped dollar sign changes everything):
But of course, in this toy example, eval would not be needed.
Notice that in the case of variable assignment, word splitting is not performed:
I am writing a shell script that executes another script by fetching it over the network and piping its contents into sh (ftp -o - $script | sh; or wget -O - |sh). Since this bypasses putting the script on the filesystem, this means I can't source the script directly (using . ), but rather it... (1 Reply)
Okay this is a mess, I'm trying to assign variables with variables in a for-loop. Here is what i have for code. The syntax is not good.
Given the following script:
#! /bin/csh
foreach site (ABC DEF GHI)
eval set \t$${site}sf = ``wc -l \$${site}.sf | awk '{print $1}'``
eval set... (2 Replies)
Hi -
I'm trying to think of a clever way to write a shell script (trying to stay w/ ksh as that's what I know the best...) that will resolve the following problem:
Problem - On a daily basis I have to email folks who are on-call to remind them. I was hoping to script this out so I could have... (9 Replies)
Hi,
Could any one share the intelligence to track this problem.
I have any array BT_META_36 and it prints properly with contents of array.
# print "BT_META_36=${BT_META_36}"
# BT_META_36=cab3,cab4:HDS:052,07A cab3,cab4:HDS:052,07A
Now I have a BT_META_36 assigned to a variable.... (0 Replies)
Hi,
I came across a post wherein you can use "set -r"(on bash) to activate restricted mode ( wherein you cant run some commands such as cd etc).
Can anyone guide if we have anything similar in ksh ?
Thanks (2 Replies)
Hi,
I am running this on Redhat 5.10
I have a simple test script called test.sh which has the following
contents and it uses the BASH shebang.
-------------------------------------------------------------
#!/bin/bash
eval `/tmp/filereader.pl /tmp/envfile.txt`
echo "TESTPATH=$TESTPATH"
... (28 Replies)
Greetings Experts,
I need to pass a parameter to ksh and the value is windows path eg: sh abc.txt C:\Users\chill3chee\Desktop
No matter I try with \ delimiter, still could not get this exact value assigned to the shell variable which was checked with echo. Tried with using... (2 Replies)
Hi,
There is an Informatica tool through which unix scripts can be called. Now the requirement in my project is that a parent script calls a child script but this parent script has to be called through the Informatica tool.
In Parent script I'm using
TEMP=`getopt -o x:y: -l area:,volume:... (1 Reply)
Hello everyone,
I am taking a course on Lynda and they show this code below. I didn't fully understand some parts. Please see the questions within the code.
Thank you for your input and time.
Regards,
function usage {
echo Options are -r -h -b -x --branch --version --help --exclude... (9 Replies)
Discussion started by: mohca2020
9 Replies
LEARN ABOUT PHP
var_export
VAR_EXPORT(3) 1 VAR_EXPORT(3)var_export - Outputs or returns a parsable string representation of a variableSYNOPSIS
mixed var_export (mixed $expression, [bool $return = false])
DESCRIPTION var_export(3) gets structured information about the given variable. It is similar to var_dump(3) with one exception: the returned represen-
tation is valid PHP code.
PARAMETERS
o $expression
- The variable you want to export.
o $return
- If used and set to TRUE, var_export(3) will return the variable representation instead of outputting it.
RETURN VALUES
Returns the variable representation when the $return parameter is used and evaluates to TRUE. Otherwise, this function will return NULL.
NOTES
Note
When the $return parameter is used, this function uses internal output buffering so it cannot be used inside an ob_start(3) callback
function.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.1.0 | |
| | |
| | Possibility to export classes and arrays con- |
| | taining classes using the __set_state() magic |
| | method. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
var_export(3) Examples
<?php
$a = array (1, 2, array ("a", "b", "c"));
var_export($a);
?>
The above example will output:
array (
0 => 1,
1 => 2,
2 =>
array (
0 => 'a',
1 => 'b',
2 => 'c',
),
)
<?php
$b = 3.1;
$v = var_export($b, true);
echo $v;
?>
The above example will output:
3.1
Example #2
Exporting classes since PHP 5.1.0
<?php
class A { public $var; }
$a = new A;
$a->var = 5;
var_export($a);
?>
The above example will output:
A::__set_state(array(
'var' => 5,
))
Example #3
Using __set_state() (since PHP 5.1.0)
<?php
class A
{
public $var1;
public $var2;
public static function __set_state($an_array)
{
$obj = new A;
$obj->var1 = $an_array['var1'];
$obj->var2 = $an_array['var2'];
return $obj;
}
}
$a = new A;
$a->var1 = 5;
$a->var2 = 'foo';
eval('$b = ' . var_export($a, true) . ';'); // $b = A::__set_state(array(
// 'var1' => 5,
// 'var2' => 'foo',
// ));
var_dump($b);
?>
The above example will output:
object(A)#2 (2) {
["var1"]=>
int(5)
["var2"]=>
string(3) "foo"
}
NOTES
Note
Variables of type resource couldn't be exported by this function.
Note
var_export(3) does not handle circular references as it would be close to impossible to generate parsable PHP code for that. If you
want to do something with the full representation of an array or object, use serialize(3).
Warning
When var_export(3) exports objects, the leading backslash is not included in the class name of namespaced classes for maximum com-
patibility.
SEE ALSO print_r(3), serialize(3), var_dump(3).
PHP Documentation Group VAR_EXPORT(3)