Hello Everybody,
Does anyone know what the @ symbol means in a csh script, if used with a variable assignment as below
@ line = 1
why not just use....
set line=1
Many thanks
rkap (1 Reply)
Im facing problem in assigning value of eval array variable as normal variable..
x=0
eval DATA${x}="FJSVcpcu"
x=`expr $x + 1`
eval DATA${x}="FJSVcsr"
if x=0, type -> eval echo \$DATA$x , its give me FJSVcpcu
i want assign this value into an variable as
variable=`eval echo... (3 Replies)
Hello,
I have a script that does an scp to a server and then gets the number of process running on that server, the o/P should be stored in a variable for further processing
eval `echo "ssh -q $Infa_user@$host 'csh -c $CMD '"`
where
CMD="ps -ef | grep -i ${INFA_REPO} | grep -v grep | wc... (2 Replies)
Hi Gurus,
I am having 2 parameters as below
parm1=value1
parm2=parm1
I want to evaluate parm1 value using eval echo \$$parm2 and later i want to assign this value to other variable which i will be using in if statement like :
if ]; then
do this.......
fi
could you please suggest... (5 Replies)
pattern1=book
{
x=1
eval echo \$pattern$x
}
book (this is the output)
But when I assign a variable to the output of the eval it doesn't work unless I prefix 2 times backslash before $ as shown below.
{
a=`eval echo \\$pattern$x`
echo $a
}
book
Why here twice "\" has to be... (3 Replies)
Is there a safe way to evaluate variable declarations within a script whether they come from a .conf file, user input, or stdin?
Example .conf file:
server=ftp.xxxx.com
port=21
user="$USER" # Hopefully allow this type of substitution
domain="$DOMAIN"
server="$(malicious... (4 Replies)
Hi
I have a strange problem:
In my shell script I am performing a copy task:
. prop.txt
cp -r $dir/ $dir/archive
$dir is fetched from a property file (prop.txt) which stores its value
dir=/opt/data
Now the problem is another dir1 comes into picture. I only want to add... (1 Reply)
Hi
I am facing a problem.
export local_folder=/opt/app/
cd /opt/app/abc/
abcversion="abc*" (abcga5 is inside /opt/app/abc/)
echo $abcversion (it echoes the correct version as abcga5 )
Now when I reuse the value of abcversion for a below path:
export... (6 Replies)
Discussion started by: ankur328
6 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)