i want to convert from an integer to a string..in unix...i am writing a C program with embedded SQL...
I remeber using itoa...but for some reason it doesnt work......i cant find it in the manual.....
Maybe that is the wrong command.....
but i have checked Dev Studio.....and it doest exist in the... (6 Replies)
Hi
i am writing a shell script; I need to convert a string to integer so that i can use it in the 'awk' command to choose a field.
can you please help me. thank you. (2 Replies)
G'day guys, first post so be gentle.
I need help with some code to work out if a variable (string) contains any integers. The valid variable (string) must contain only letters.
Also need to be able to work out if a variable contains only integers.
Any help greatly appreciated. (7 Replies)
Hi everyone,
I would like to know how to convert an integer to a string. for instance if i=1 i would like to creat a variable called constant1. i want to do this in a for loop so for each value of i, i create a new variable such as constant2, constant3,... and so on.
for i in 1 2 3
do ... (1 Reply)
hi,
I need to create an IF condition. I read a line from a file and get the 5 word using space as a delimited. This word can have only two values either '*' or '1-5'
I need to write an IF condition for two cases. I can either compare it to * or 1-5(or even 1 by cutting and getting only the... (3 Replies)
Input:
XXX:1,XXX:3,XXX:3
Output:
A=1
B=3
C=3
Below code is what i do currently. However it doesn't work out for all cases. As some times the last digit extracted is giving me error. It cant be used for arithmetic computation.
Any better methods out there? If possible, can you... (9 Replies)
I am on HP-UX using ksh in the script.
MaxSal=`sqlplus -silent /nolog <<EOF
connect / as sysdba
whenever sqlerror exit sql.sqlcode
set pagesize 0 feedback off verify off heading off echo off
select max(sal) from emp1;
select max(sal) from emp2;
select max(sal) from emp3;
exit;
EOF`... (3 Replies)
I have a function that is supposed to check for user processes and wait for 0 count before exiting the function. I am sure I have more than one issue in my code, but the stumbling block right now is that I am trying to convert the value of my variable from a string to integer.
process_count... (10 Replies)
Discussion started by: MIA651
10 Replies
LEARN ABOUT PHP
ip2long
IP2LONG(3) 1 IP2LONG(3)ip2long - Converts a string containing an (IPv4) Internet Protocol dotted address into a proper addressSYNOPSIS
int ip2long (string $ip_address)
DESCRIPTION
The function ip2long(3) generates an IPv4 Internet network address from its Internet standard format (dotted string) representation.
ip2long(3) will also work with non-complete IP addresses. Read http://publibn.boul-
der.ibm.com/doc_link/en_US/a_doc_lib/libs/commtrf2/inet_addr.htm for more info.
PARAMETERS
o $ip_address
- A standard format address.
RETURN VALUES
Returns the IPv4 address or FALSE if $ip_address is invalid.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
|5.2.10 | |
| | |
| | Prior to this version, ip2long(3) would some- |
| | times return a valid number even if passed an |
| | value which was not an (IPv4) Internet Protocol |
| | dotted address. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
ip2long(3) Example
<?php
$ip = gethostbyname('www.example.com');
$out = "The following URLs are equivalent:<br />
";
$out .= 'http://www.example.com/, http://' . $ip . '/, and http://' . sprintf("%u", ip2long($ip)) . "/<br />
";
echo $out;
?>
Example #2
Displaying an IP address
This second example shows how to print a converted address with the printf(3) function in both PHP 4 and PHP 5:
<?php
$ip = gethostbyname('www.example.com');
$long = ip2long($ip);
if ($long == -1 || $long === FALSE) {
echo 'Invalid IP, please try again';
} else {
echo $ip . "
"; // 192.0.34.166
echo $long . "
"; // -1073732954
printf("%u
", ip2long($ip)); // 3221234342
}
?>
NOTES
Note
Because PHP's integer type is signed, and many IP addresses will result in negative integers on 32-bit architectures, you need to
use the "%u" formatter of sprintf(3) or printf(3) to get the string representation of the unsigned IP address.
Note
ip2long(3) will return FALSE for the IP 255.255.255.255 in PHP 5 <= 5.0.2. It was fixed in PHP 5.0.3 where it returns -1 (same as
PHP 4).
SEE ALSO long2ip(3), sprintf(3).
PHP Documentation Group IP2LONG(3)