PREG_QUOTE(3) 1 PREG_QUOTE(3)preg_quote - Quote regular expression charactersSYNOPSIS
string preg_quote NULL (string $str, [string $delimiter])
DESCRIPTION preg_quote(3) takes $str and puts a backslash in front of every character that is part of the regular expression syntax. This is useful if
you have a run-time string that you need to match in some text and the string may contain special regex characters.
The special regular expression characters are: . + * ? [ ^ ] $ ( ) { } = ! < > | : -
PARAMETERS
o $str
- The input string.
o $delimiter
- If the optional $delimiter is specified, it will also be escaped. This is useful for escaping the delimiter that is required by
the PCRE functions. The / is the most commonly used delimiter.
RETURN VALUES
Returns the quoted (escaped) string.
CHANGELOG
+--------+--------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+--------------------------------+
| 5.3.0 | |
| | |
| | The - character is now quoted |
| | |
+--------+--------------------------------+
EXAMPLES
Example #1
preg_quote(3) example
<?php
$keywords = '$40 for a g3/400';
$keywords = preg_quote($keywords, '/');
echo $keywords; // returns $40 for a g3/400
?>
Example #2
Italicizing a word within some text
<?php
// In this example, preg_quote($word) is used to keep the
// asterisks from having special meaning to the regular
// expression.
$textbody = "This book is *very* difficult to find.";
$word = "*very*";
$textbody = preg_replace ("/" . preg_quote($word, '/') . "/",
"<i>" . $word . "</i>",
$textbody);
?>
NOTES
Note
This function is binary-safe.
SEE ALSO
PCRE Patterns, escapeshellcmd(3).
PHP Documentation Group PREG_QUOTE(3)
For some reason,
@logs is a list of log files
@filter is a list of expressions to grep out
foreach (@logs){
open READ, "<$_" or die $!;
@temp=<READ>;
close READ;
foreach (@filter){
print grep /$_/,@temp ;
}
}
returns a regex error in one of the files... (4 Replies)
Hi,
Can we pass delimiter "|" as reference.
Example:
my $delim = '|';
print "delim = <$delim> \n";
my $word = "I|know|you";
my ($fld1,$fld2,$fld3) = split(/\$delim/,$word);
print "fld1 = $fld1 \n";
print "fld2 = $fld2 \n";
print "fld3 = $fld3 \n";
This above code does not work... (2 Replies)
Hi,
I've a logfile which i need to parse and get the logs depending upon the user input. here, i'm providing an option to enter the string which can be matched with the log entries.
e.g. one of the logfile entry reads like this -
$str = " mpgw(BLUESOAPFramework):... (6 Replies)
Hi
I have 2 directories t1 and t2 with some files in it. I have to see whether the files present in t1 is also there in t2 or not. Currently, both the directories contain the same files as shown below:
$ABC.TXT
def.txt
Now, when I run the below script, it tells def.txt is found,... (5 Replies)
Hi all,
I have 2 files containing data like this:
so if there is same entry repeated in the column like1,2,3,4
I have to check if there is different entries column like 2,4
but similar entries for duplicatein column 2 like1,3
the output shuld be like this for first file
... (5 Replies)
How to find count total number of pattern in a file …
File contains : a.txt
-------------
aaa bbb nnn
ccc aaa bbb
aaa ddd aaa
aaa aaa aaa
grep -c aaa a.txt
Op: 4 ( But my requirement is should count the total no of patterns as 7 ) (4 Replies)
Hello,
I have a spec file that contains a lot of strings that looks like this:
PC DELL OptiPlex 3010MT i3 3220/2GB/500GB/DVD-RW/FREE DOS / 5Y NBD
Intel i3 3220 (Dual Core, 3.30GHz, 3MB, w/ HD2500 Graphics), 2GB (1x2GB) DDR3 PC3-1600MHz, 500GB HDD SATA III 7200rpm, DVD+/-RW (16x),... (9 Replies)