Hello,
I've written a Perl script that prompts for asnwers to questons. At those prompts, the backspace key shows up as ^H^H.
I would like the users to have the ablility to use the backspace key. I'm running bash shell and don't otherwise have this problem.
Any help would be greatly... (4 Replies)
I have this in my .profile:
stty erase `tput kbs`
which sets erase to ^H for a vt and ^? for an xterm.
This has been fine up until now on all systems whether I login using a vt terminal emulator or an xterm.
On this new system though, if I log in directly using an xterm, backspace doesn't... (1 Reply)
Hello, I am a UNIX newbie. With that out of that way..
In order to delete a mistyped character, I need to press control+h to move the cursor to the left, and then overwrite it. If I try hitting the backspace key, it just brings me to a new prompt.
Is there a way to change it so that my... (1 Reply)
I have a script that asks a user for a few question.
I would like the users to be able to use the backspace key if they make a mistake. Right now when they try they get ^? instead of it backing up.
As you can see here from a stty -a the backspace is set...
speed 38400 baud;
rows = 42;... (2 Replies)
Hi
In solaris if i have to delete something from shell i need to use ctrl+H, coz if i use backspace it shows ^?. Can any one please tell me how to set backspace key so that i can delete any character directly instead of using Ctrl+h.
Second Q is like in linux for going to recent command, i... (10 Replies)
Hi all,
I am using a script which is as follows: It reads a character.
I want to check if the character is a backspace character or some other character.
read -n 1 x
if ; then
echo "backspace detected"
else
echo "some other character"
fi
Thanks in advance. (1 Reply)
Hi gurus, i use vi editor. when I want search something I Type / (or ? if i want search backward), that is OK.
But when i make mistake in searching string how can i delete character ?
I tried bacskpase but did not work (gives just strange characters).
Also tried shift+bacskspace but this only... (3 Replies)
Hello Forum:
I am trying to find a meaning to this echo escape character:
echo -e "\b"
Can someone tell me or give me examples of the effect that this has when used. I know that \b is the backspace, but I cannot visualise it use like any other escape such as:
echo -e "\n"
Thanks.
--Willie (10 Replies)
Hello,
My Perl script reads input from stdin and prints it out to stdout. After I read input I use BACKSPACE to erase characters. However BACKSPACE does not work with Unicode characters that are multi-bytes. On screen the character is erased but underneath only one byte is deleted instead of all... (3 Replies)
i have something like this
tablesName="abc def hij akn ... etc etc"
count=0
for i in $tablesName
do
echo -en "\b\b\b\b\b\b\b\b\b\b\b\b\bTableCount: $count"
count=`expr $count + 1`
done
the above is just a description wha i need is when the loop executes
the... (1 Reply)
Discussion started by: vivek d r
1 Replies
LEARN ABOUT PHP
round
ROUND(3) 1 ROUND(3)round - Rounds a floatSYNOPSIS
float round (float $val, [int $precision], [int $mode = PHP_ROUND_HALF_UP])
DESCRIPTION
Returns the rounded value of $val to specified $precision (number of digits after the decimal point). $precision can also be negative or
zero (default).
Note
PHP doesn't handle strings like "12,300.2" correctly by default. See converting from strings.
PARAMETERS
o $val
- The value to round
o $precision
- The optional number of decimal digits to round to.
o $mode
- Use one of the following constants to specify the mode in which rounding occurs.
+--------------------+---------------------------------------------------+
| Constant | |
| | |
| | Description |
| | |
+--------------------+---------------------------------------------------+
| | |
| PHP_ROUND_HALF_UP | |
| | |
| | Round $val up to $precision decimal places away |
| | from zero, when it is half way there. Making 1.5 |
| | into 2 and -1.5 into -2. |
| | |
| | |
|PHP_ROUND_HALF_DOWN | |
| | |
| | Round $val down to $precision decimal places |
| | towards zero, when it is half way there. Making |
| | 1.5 into 1 and -1.5 into -1. |
| | |
| | |
|PHP_ROUND_HALF_EVEN | |
| | |
| | Round $val to $precision decimal places towards |
| | the next even value. |
| | |
| | |
|PHP_ROUND_HALF_ODD | |
| | |
| | Round $val to $precision decimal places towards |
| | the next odd value. |
| | |
+--------------------+---------------------------------------------------+
RETURN VALUES
The rounded value
EXAMPLES
Example #1
round(3) examples
<?php
echo round(3.4); // 3
echo round(3.5); // 4
echo round(3.6); // 4
echo round(3.6, 0); // 4
echo round(1.95583, 2); // 1.96
echo round(1241757, -3); // 1242000
echo round(5.045, 2); // 5.05
echo round(5.055, 2); // 5.06
?>
Example #2
$mode examples
<?php
echo round(9.5, 0, PHP_ROUND_HALF_UP); // 10
echo round(9.5, 0, PHP_ROUND_HALF_DOWN); // 9
echo round(9.5, 0, PHP_ROUND_HALF_EVEN); // 10
echo round(9.5, 0, PHP_ROUND_HALF_ODD); // 9
echo round(8.5, 0, PHP_ROUND_HALF_UP); // 9
echo round(8.5, 0, PHP_ROUND_HALF_DOWN); // 8
echo round(8.5, 0, PHP_ROUND_HALF_EVEN); // 8
echo round(8.5, 0, PHP_ROUND_HALF_ODD); // 9
?>
Example #3
$mode with precision examples
<?php
/* Using PHP_ROUND_HALF_UP with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_UP); // 1.6
echo round( 1.54, 1, PHP_ROUND_HALF_UP); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_UP); // -1.6
echo round(-1.54, 1, PHP_ROUND_HALF_UP); // -1.5
/* Using PHP_ROUND_HALF_DOWN with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_DOWN); // 1.5
echo round( 1.54, 1, PHP_ROUND_HALF_DOWN); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_DOWN); // -1.5
echo round(-1.54, 1, PHP_ROUND_HALF_DOWN); // -1.5
/* Using PHP_ROUND_HALF_EVEN with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_EVEN); // 1.6
echo round( 1.54, 1, PHP_ROUND_HALF_EVEN); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_EVEN); // -1.6
echo round(-1.54, 1, PHP_ROUND_HALF_EVEN); // -1.5
/* Using PHP_ROUND_HALF_ODD with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_ODD); // 1.5
echo round( 1.54, 1, PHP_ROUND_HALF_ODD); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_ODD); // -1.5
echo round(-1.54, 1, PHP_ROUND_HALF_ODD); // -1.5
?>
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | The $mode parameter was introduced. |
| | |
| 5.2.7 | |
| | |
| | The inner workings of round(3) was changed to |
| | conform to the C99 standard. |
| | |
+--------+---------------------------------------------------+
SEE ALSO ceil(3), floor(3), number_format(3).
PHP Documentation Group ROUND(3)