How would I delete white spaces in a specified file?
Also, I'd like to know what command I would use to take something off a regular expression, and put it onto another.
ie.
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expression1 <take_off>
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expression2 (put here)
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Any help would be great, thanks! (10 Replies)
hi all...
i have the next question:
i have a flat file with a lot of records (lines). Each record has 10 fields, which are separated by pipe (|). My problem is what sometimes, in the first record, there are white spaces (no values, nothing) in the beginning of the record, like this:
ws ws... (2 Replies)
I have a variable that calls in a string from txt file. Problem is the string comes with an abundance of white spaces trailing it. Is there any easy way to trim the tailing white spaces off at the end? Thanks in advance. (9 Replies)
Hi,
Can anybody suggest me how to combine two strings with two or more white spaces and assign it to a variable?
E.g.
first=HAI
second=HELLO
third="$first $second" # appending strings with more than one white spaces
echo $third
this would print
HAI HELLO
Output appears... (2 Replies)
Hi
I have a shell script that looks for running processes in order to kill them. The script (ksh) gets the PID of these processes using the following:
PROCS=`ps -fu ${USERID} | egrep "MONITOR" | grep -v grep | cut -d" " -f4`
However, I spotted an issue where PID's of different lengths... (3 Replies)
SHELL SCRIPT
Hi
I have a file in the following format
Mayank Sushant
Dheeraj Kunal
ARUN Samir
How can i replace the white space in between and replace them with a comma?? The resultant output should be
Mayank,Sushant
Dheeraj,Kunal
ARUN,Samir
i tried using
sed -e... (8 Replies)
Hi everyone
I have a file looks like this
X01 1 JOE 20100312
X02 TOD 20100312
X03 3 SAM 20100312
I wrote a script to assign the values in 5 columns to 5 variables. When I use cut command to assign column 2 or 3, it skips it if it is a space (see below)
... (3 Replies)
Hi,
I am having problem in deleting the leading spaces:-
cat x.csv
baseball,NULL,8798765,Most played
baseball,NULL,8928192,Most played
baseball,NULL,5678945,Most played
cricket,NOTNULL,125782,Usually played
cricket,NOTNULL,678921,Usually played
$ nawk 'BEGIN{FS=","}!a... (2 Replies)
Hello,
I have a Comma separated input file with one of the sample records as below:
-9223372036854477528,"834","834003325515BXNI00101012013C","5","PLAN_VALUE","PPO, General
Cable","C",20130101,99991231,"A","2012-12-25-13.58.14.434000","ZPL2 ","2012-12-25-13.58.14.434000","ZPL2 ... (4 Replies)
I need to change the order of the columns of data that looks like this:
The original data is in 6 tab-separated columns.
FACTSHEET factsheet NN 1 5 DEP
WHAT what WP 2 3 SBJ
IS be VBZ 3 1 NMOD
AIDS AIDS NP ... (1 Reply)
Discussion started by: owwow14
1 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)