03-04-2008
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Is it possible to combine a regular expression with a aritmetical expression? For example, taking a 8-numbers caracter sequece and casting each output of a grep, comparing to a constant.
THX! (2 Replies)
Discussion started by: Z0mby
2 Replies
2. Linux
Regular expression to extract "y" from "abc/x.y.z" (2 Replies)
Discussion started by: rag84dec
2 Replies
3. Shell Programming and Scripting
Hi
What is the meaning of this in regular expression $k =~ s/^\s*//;
Plz explain (3 Replies)
Discussion started by: Harikrishna
3 Replies
4. Shell Programming and Scripting
CA_RELEASE has a value of 6. I need to check if that this is a numeric value. if not error.
source $CA_VERSION_DATA
if * ]
then
echo "CA_RELESE $CA_RELEASE is invalid"
exit -1
fi
+ source /etc/ncgl/ca_version_data
++ CA_PRODUCT_ID=samxts
++ CA_RELEASE=6
++ CA_WEEK_NO=7
++... (3 Replies)
Discussion started by: ketkee1985
3 Replies
5. Shell Programming and Scripting
Hi all ,
I have a string in my weblog xheader v6-day-2011:xx:yy:zz:qq:qq:ww:ee:rr
My requirement is to lookup the sting v6-day-2011 in this header and if found would like to extract the V6 ip part .
v6-day-2011 is always constant for a ipv6 entry so i would like to extract every thing... (4 Replies)
Discussion started by: jambesh
4 Replies
6. Programming
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
# print... (1 Reply)
Discussion started by: jessy83
1 Replies
7. Programming
how to code with regexp.h
some one can give me instance?
thx (4 Replies)
Discussion started by: AKB48
4 Replies
8. Shell Programming and Scripting
hi
i am trying to extract some specific data out of a text file using regular expressions with shell script
that is using a multiline grep .. and the tool i am using is pcregrep so that i can get compatibility with perl's regular expressions
for a sample data like this, i am trying to grab... (6 Replies)
Discussion started by: vemkiran
6 Replies
9. UNIX for Advanced & Expert Users
Hello All,
I'm trying to extract the lines between two consecutive elements of an array from a file.
My array looks like:
problem_arr=(PRS111 PRS213 PRS234)
j=0
while } ]
do
k=`expr $j + 1`
sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt
---some operation goes... (11 Replies)
Discussion started by: InduInduIndu
11 Replies
10. Shell Programming and Scripting
Hi all, I have a large fasta (dna sequence) file. I would like to extract a portion of the header as well as the sequence (line below the header).
Input:
Output:
All accession values (the term I want to preserve, which is the string including and directly following "GL") are different, but I... (8 Replies)
Discussion started by: pathunkathunk
8 Replies
SPLIT(3) 1 SPLIT(3)
split - Split string into array by regular expression
SYNOPSIS
array split (string $pattern, string $string, [int $limit = -1])
DESCRIPTION
Splits a $string into array by regular expression.
Warning
This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged.
PARAMETERS
o $pattern
- Case sensitive regular expression. If you want to split on any of the characters which are considered special by regular
expressions, you'll need to escape them first. If you think split(3) (or any other regex function, for that matter) is doing some-
thing weird, please read the file regex.7, included in the regex/ subdirectory of the PHP distribution. It's in manpage format, so
you'll want to do something along the lines of man /usr/local/src/regex/regex.7 in order to read it.
o $string
- The input string.
o $limit
- If $limit is set, the returned array will contain a maximum of $limit elements with the last element containing the whole rest
of $string.
RETURN VALUES
Returns an array of strings, each of which is a substring of $string formed by splitting it on boundaries formed by the case-sensitive
regular expression $pattern.
If there are n occurrences of $pattern, the returned array will contain n+1 items. For example, if there is no occurrence of $pattern, an
array with only one element will be returned. Of course, this is also true if $string is empty. If an error occurs, split(3) returns FALSE.
EXAMPLES
Example #1
split(3) example
To split off the first four fields from a line from /etc/passwd:
<?php
list($user, $pass, $uid, $gid, $extra) =
split(":", $passwd_line, 5);
?>
Example #2
split(3) example
To parse a date which may be delimited with slashes, dots, or hyphens:
<?php
// Delimiters may be slash, dot, or hyphen
$date = "04/30/1973";
list($month, $day, $year) = split('[/.-]', $date);
echo "Month: $month; Day: $day; Year: $year<br />
";
?>
NOTES
Note
As of PHP 5.3.0, the regex extension is deprecated in favor of the PCRE extension. Calling this function will issue an E_DEPRECATED
notice. See the list of differences for help on converting to PCRE.
Tip
split(3) is deprecated as of PHP 5.3.0. preg_split(3) is the suggested alternative to this function. If you don't require the power
of regular expressions, it is faster to use explode(3), which doesn't incur the overhead of the regular expression engine.
Tip
For users looking for a way to emulate Perl's @chars = split('', $str) behaviour, please see the examples for preg_split(3) or
str_split(3).
SEE ALSO
preg_split(3), spliti(3), str_split(3), explode(3), implode(3), chunk_split(3), wordwrap(3).
PHP Documentation Group SPLIT(3)