Hey Folks and Gurus there
I am trying to replicate this logic in bash :
(1) if ; then
function1 parameters &
function2 parameters &
fi
Is there an easy method esp one with regex that can do this comparision.
e.g. $var is compared to this list ( case regardless ) (... (1 Reply)
Hi all,
i really new in linux and just heard about shell scripting couple days ago..
i did exercises on linux in online tutorial but as a beginner, i'm facing problems in developing the script as there are errors that sometimes i dun have any idea on how to solve it.What i'm doing now is not... (3 Replies)
Anyone knows how to set variable in TCL ?
let say i have a password variable and it will have different values.
set variable
and variable has different values like:
xxxx
yyyy
zzzz (0 Replies)
Apologies for the utter triviality of this question, but we all have to start somewhere! I've also tried searching but this question is pretty vague so I didn't (a) really know what to search for or (b) get many relevant hits to what I did search for.
Anyway, I'm in the process of self-teaching... (1 Reply)
I wnat to assign a set of values to a variable
and
use it in if condition.
for example:
i=$1
d=1 2 3 4 5 6
if
then
echo "Fine"
else
echo "Check"
fi
i will either of the value in d, i.e. i can be 1 or 2 or any value in d, How this can be done?
Thanks in advance (2 Replies)
Hello,
I am interested in finding out whether someone has a perl or awk script which takes a set of letters such as wak and referring to a dictionary spews out all possible forms such as awk, kaw etc.
If someone has such a script, could it be put up please. The script should handle Unicode.
Many... (0 Replies)
I am new to ksh scripting, specially array. How do i get values from an array and set the value as variable and pass those variables to the different functions??
someone taught me how to get input from a file with have columns i need to read, but now i doesnt know how to set those value to be a... (7 Replies)
Heya
I'm using Awesome WM with the Vicious widget library.
As i'm using multi boot, Win8, Fedora and Arch, i have my WM-Config shared accross my GNU/Linux installations.
The regarding snippet:
-- Functions
-- Its just a workaround for an 'unstable' 'hwmon/hwmon' definition of Fedora21 -... (0 Replies)
I have a file number.txt.I need to get 2 inputs from the terminal like a=100 and b=200.If a and b are there in the file,then check if a < b,print "less".If a is not there in the file,print "a is missing" or if b is not there in the file,print "b is missing".
number.txt:
100 200 300 (2 Replies)
Discussion started by: aneeta13
2 Replies
LEARN ABOUT PHP
debug_zval_dump
DEBUG_ZVAL_DUMP(3) 1 DEBUG_ZVAL_DUMP(3)debug_zval_dump - Dumps a string representation of an internal zend value to outputSYNOPSIS
void debug_zval_dump (mixed $variable, [mixed $...])
DESCRIPTION
Dumps a string representation of an internal zend value to output.
PARAMETERS
o $variable
- The variable being evaluated.
RETURN VALUES
No value is returned.
EXAMPLES
Example #1
debug_zval_dump(3) example
<?php
$var1 = 'Hello World';
$var2 = '';
$var2 =& $var1;
debug_zval_dump(&$var1);
?>
The above example will output:
&string(11) "Hello World" refcount(3)
Note
Beware the refcount
The refcount value returned by this function is non-obvious in certain circumstances. For example, a developer might expect the
above example to indicate a refcount of 2. The third reference is created when actually calling debug_zval_dump(3).
This behavior is further compounded when a variable is not passed to debug_zval_dump(3) by reference. To illustrate, consider a
slightly modified version of the above example:
Example #2
<?php
$var1 = 'Hello World';
$var2 = '';
$var2 =& $var1;
debug_zval_dump($var1); // not passed by reference, this time
?>
The above example will output:
string(11) "Hello World" refcount(1)
Why refcount(1)? Because a copy of $var1 is being made, when the function is called.
This function becomes even more confusing when a variable with a refcount of 1 is passed (by copy/value):
Example #3
<?php
$var1 = 'Hello World';
debug_zval_dump($var1);
?>
The above example will output:
string(11) "Hello World" refcount(2)
A refcount of 2, here, is extremely non-obvious. Especially considering the above examples. So what's happening?
When a variable has a single reference (as did $var1 before it was used as an argument to debug_zval_dump(3)), PHP's engine opti-
mizes the manner in which it is passed to a function. Internally, PHP treats $var1 like a reference (in that the refcount is
increased for the scope of this function), with the caveat that if the passed reference happens to be written to, a copy is made,
but only at the moment of writing. This is known as "copy on write."
So, if debug_zval_dump(3) happened to write to its sole parameter (and it doesn't), then a copy would be made. Until then, the
parameter remains a reference, causing the refcount to be incremented to 2 for the scope of the function call.
SEE ALSO var_dump(3), debug_backtrace(3), References Explained, References Explained (by Derick Rethans).
PHP Documentation Group DEBUG_ZVAL_DUMP(3)