we hv a big enviroment networked.
we use squid proxy.
access allowed by src address previously.
we have win2000 network with ads.
my requirement is the proxy should allow domain users only for access.
how can i map my windows userdatabase with squid
is there any thing specific which has 2 b... (1 Reply)
Hi, I'm a newbie.
I need help on my first assignment in UNIX.
1. How do I determine the number of non-empty directories?
I was told to create a variable ARCHIVE, which points to the directory that contains the archive of the messages. But I'm so dumb and I don't even know how to do this.
2. In... (1 Reply)
Hi every one
I have got very very bad Email, My question is:
How can I get all information about that f*** Email, I do mean
IP,reall name, Adress, user name, password etc... I wonder if there is any program or website that I can see that email, help me please
When I used windows Xp(old... (2 Replies)
I have a list of variables: ss1, ss5, ss6, ss8, st2 etc. (these values are not fixed, configurable). Now, I have assigned ss5=”test”. And I want to search in the list for the string “test” to know which variable is having the value “test”. Can u pls tell me how to do this? (10 Replies)
Hi,
I need your help guys. I have two data files, namely 101.amberized.pdb & 101.pdb .
Now I want to replace the whole 3rd column of 101.amberized.pdb with the 3rd column of 101.pdb file. How do I do it in shell?
Thanks in advance
Parimal (11 Replies)
When i run this command, everything is ok. The file can be email and attached but soon after i download the file, the file cant be read. It's seem corrupted. Totally cant be read although i'm using context or wordfile. Original file generated at ek_bkup/alert/tbspace_datafile.log is OK.....
... (7 Replies)
I have this code:
#!/bin/sh
awk 'BEGIN
NR == 2
repl = "PHI"
$4 = repl
print $0 'dryloop.txt
and this code:
#!/bin/sh
sed -e '1s/\|$/\|COMID\|/g' -e 's/^087.*$/&PHI\|g' hl.dsldryloop > textdry.txt
My code won't work. I want to change the COMID of lines starting with 087 .
this is my... (15 Replies)
Greetings,
I hope my post finds you all OK,
I have a Netra240 server in an HLR inside a wireless CDMA Exchange, it works as a Hard Disk Unit (HDU) as shown in Local Management Terminal (LMT) as show in the picture 1 attached.
The power went down because of a power failure in main UPS, when... (2 Replies)
Discussion started by: Sharista
2 Replies
LEARN ABOUT PHP
unset
UNSET(3) 1 UNSET(3)unset - Unset a given variableSYNOPSIS
void unset (mixed $var, [mixed $...])
DESCRIPTION unset(3) destroys the specified variables.
The behavior of unset(3) inside of a function can vary depending on what type of variable you are attempting to destroy.
If a globalized variable is unset(3) inside of a function, only the local variable is destroyed. The variable in the calling environment
will retain the same value as before unset(3) was called.
<?php
function destroy_foo()
{
global $foo;
unset($foo);
}
$foo = 'bar';
destroy_foo();
echo $foo;
?>
The above example will output:
bar
To unset(3) a global variable inside of a function, then use the $GLOBALS array to do so:
<?php
function foo()
{
unset($GLOBALS['bar']);
}
$bar = "something";
foo();
?>
If a variable that is PASSED BY REFERENCE is unset(3) inside of a function, only the local variable is destroyed. The variable in the
calling environment will retain the same value as before unset(3) was called.
<?php
function foo(&$bar)
{
unset($bar);
$bar = "blah";
}
$bar = 'something';
echo "$bar
";
foo($bar);
echo "$bar
";
?>
The above example will output:
something
something
If a static variable is unset(3) inside of a function, unset(3) destroys the variable only in the context of the rest of a function. Fol-
lowing calls will restore the previous value of a variable.
<?php
function foo()
{
static $bar;
$bar++;
echo "Before unset: $bar, ";
unset($bar);
$bar = 23;
echo "after unset: $bar
";
}
foo();
foo();
foo();
?>
The above example will output:
Before unset: 1, after unset: 23
Before unset: 2, after unset: 23
Before unset: 3, after unset: 23
PARAMETERS
o $var
- The variable to be unset.
o $...
- Another variable ...
RETURN VALUES
No value is returned.
EXAMPLES
Example #1
unset(3) example
<?php
// destroy a single variable
unset($foo);
// destroy a single element of an array
unset($bar['quux']);
// destroy more than one variable
unset($foo1, $foo2, $foo3);
?>
Example #2
Using (unset) casting
(unset) casting is often confused with the unset(3) function. (unset) casting serves only as a NULL-type cast, for completeness. It
does not alter the variable it's casting.
<?php
$name = 'Felipe';
var_dump((unset) $name);
var_dump($name);
?>
The above example will output:
NULL
string(6) "Felipe"
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
Note
It is possible to unset even object properties visible in current context.
Note
It is not possible to unset $this inside an object method since PHP 5.
Note
When using unset(3) on inaccessible object properties, the __unset() overloading method will be called, if declared.
SEE ALSO isset(3), empty(3), __unset(), array_splice(3).
PHP Documentation Group UNSET(3)