hi
i have a function
abc
{
//from this function i am passing args to antoher function like
def a b c j k l
}
now i want to count the no of args coming to def() function and iterate over those values
is there any way to do this one
please help (2 Replies)
Hi,
I'm trying to work on the script given below
#!/bin/ksh -x
pfile()
{
echo "$1"
}
touch smp19
echo "Hi" > smp19
result=$(pfile $smp19)
echo $result
As highlighted , when i pass $smp19 as parameter ,it does not display the output.However when i try giving "Hi" instead... (2 Replies)
SHELL SCRIPT
Hi,
I have a file in which contents are as follows:
9999,abdc,123
9988,aba_12,2323
and so on
I want to read the contents of this file such that i can do
echo "This is $a followed by $b an then $c"
I tried the following but id did not work
cat test | cut -d ',' -f1|... (7 Replies)
this is my issue.
4 parameters are passed from korn shell to sql script.
parameter_1= varchar2 datatype or no value entered my user.
parameter_2= number datatype or no value entered my user.
parameter_3= number datatype or no value entered my user.
parameter_4= number datatype or no... (5 Replies)
Greetings,
I m wondering if it's possible do do the following :
I have a simple function called "FindMoveDelete" which does the following :
FindMoveDelete()
{
find . -iname "$FILENAME*.ext" -exec mv {} "$PATH/$VAR" \; &&
find . -maxdepth 1 -type d -iname "$FILENAME*" -exec rm -rf {}... (6 Replies)
I'm in the process of writng a function that consists of a case statement is there a way of calling the function and passing a value to it?
ie
function1 () {
case
opt1 do .....
opt2 do.....
esac
}
function opt1
I'm aware the syntax is not correct, but you get the general idea. (1 Reply)
Hello,
I have a simple script that runs an application,
# these arguments have the same value for all splits
ARCH=12.11.1
BATCHES=50
EPOCHS=5000
LEARN_MODE=ONLINE
LEARN_RATE=0.25
PROJ=02_BT_12.11.1.proj
echo "processing split A on hex"
cd A/
DATA_SET=S2A_v1_12.1.1_1... (4 Replies)
Dear All,
I have attached a file. In that I want to read some of the values like
1. ExecutionTime
2. ClockTime
etc. I want to read at a specified time. How can I do that?
Thanks & Regards,
linuxUser_ (9 Replies)
I'm able to read & print an array in varaible called "filelist"
I need to pass this array variable to a function called verify() and then read and loop through the passed array inside the function.
Unfortunately it does not print the entire array from inside the funstion's loop.
#/bin/ksh... (5 Replies)
Discussion started by: mohtashims
5 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)