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Full Discussion: How to substitute brackets in the beginning of string in perl?
Top Forums Shell Programming and Scripting How to substitute brackets in the beginning of string in perl? Post 302345737 by vanitham on Thursday 20th of August 2009 05:42:58 AM
Old 08-20-2009
How to substitute brackets in the beginning of string in perl?
Hi,

I have a string like this user can specify different query sets that is why "or" is mentioned:

Code:
$string="[[:<:]](";

or

$string="[[:<:]]((";

or

$string="[[:<:]](((";

or

$string="[[:>:]](((((";


What i have to do is substitute these brackets in the beginning.

I tried like this:

Code:
if($string=~/\[\[:<:\]\]\(/)
{
  $string=~s/\[\[:<:\]\]\(/\(\[\[:<:\]\]/g;
}
elsif($string=~/[[:<:]]\(\(/)
{
   #same here
}
elsif($string=~/[[:<:]]\(\(\(/)
{
  #same here
}
elsif($string=~/[[:<:]]\(\(\(\(/)
{
  #same here
}
elsif($string=~/[[:<:]]\(\(\(\(\(/)
{
  #same here
}

If statement i can use but i will be not be sure how many brackets will be there to substitute in the beginning?

I have to avoid this if loop!!

The output should be like this.

Code:
$string="\([[:<:]]";

or

$string="\(\([[:<:]]";

or

$string="\(\(\([[:<:]]";

etc like this all these different string examples are based on the users query sets that is why i just mentioned or such that user can give either like first string ( [[:<:]]\( ) or like second string ( [[:<:]]\(\( ).

How can i put or substitute brackets in the beginning of the sting?

Any ideas???

Regards
Vanitha
 

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LEARN ABOUT PHP

mysqli_real_query

MYSQLI_REAL_QUERY(3)							 1						      MYSQLI_REAL_QUERY(3)

mysqli::real_query - Execute an SQL query

       Object oriented style

SYNOPSIS

       bool mysqli::real_query (string	$query)

DESCRIPTION

       Procedural style
       bool mysqli_real_query (mysqli  $link, string  $query)

	Executes  a  single  query  against  the  database  whose  result  can	then  be  retrieved  or stored using the mysqli_store_result(3) or
       mysqli_use_result(3) functions.

	In order to determine if a given query should return a result set or not, see mysqli_field_count(3).

PARAMETERS

	      o $
		link -Procedural style only: A link identifier returned by mysqli_connect(3) or mysqli_init(3)

	      o $query
		- The query, as a string.  Data inside the query should be properly escaped.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

SEE ALSO

       mysqli_query(3), mysqli_store_result(3), mysqli_use_result(3).

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