<div>
$welcome_string=~s/\%([\w_<wbr />]+)\%/$par<wbr />ams-&gt;{$1}/<wbr />g;
</div>


$welcome_string=~s/\%([\w_]+)\%/$params->{$1}/g;

<div>
When you say $params-&gt;{'FIRST_NAME'} do you mean that literal string, or do you want the value contained in the hash ref?<br />
<br />
\w includes _<br />
<br />
you don't need to \ the % &gt;&nbsp;{ or ' &nbsp;in this context
</div>


When you say $params->{'FIRST_NAME'} do you mean that literal string, or do you want the value contained in the hash ref?

\w includes _

you don't need to \ the % > { or '  in this context

<div>
Yes, it works.<br />
<br />
Thanks.
</div>


<div>
<div class="content wysiwyg-content">
Hello Experts,<br />
<br />
I have a problem in using regular expression in Perl.<br />
I am fetching a value from database and storing it in a variable '$welcome_string'.<br />
The value fetched is unknown, but it contains value something like,<br />
<br />
'Welcome %FIRST_NAME% %LAST_NAME% to this portal'.<br />
<br />
I want a regular expression which will convert the above string to the following:<br />
<br />
'Welcome $params-&gt;{'FIRST_NAME'} $params-&gt;{'LAST_NAME'} to this portal'.<br />
<br />
Kindly provide solution.<br />
<br />
Thanks.
</div>
</div>


Hello Experts,

I have a problem in using regular expression in Perl.
I am fetching a value from database and storing it in a variable '$welcome_string'.
The value fetched is unknown, but it contains value something like,

'Welcome %FIRST_NAME% %LAST_NAME% to this portal'.

I want a regular expression which will convert the above string to the following:

'Welcome $params->{'FIRST_NAME'} $params->{'LAST_NAME'} to this portal'.

Kindly provide solution.

Thanks.

Replacement in Regular Expression

Perl is a high-level, general-purpose, interpreted, dynamic programming languages with over 25 years of development. Perl 5 runs on over 100 platforms from portables to mainframes and is suitable for both rapid prototyping and large-scale development projects.  Perl gained widespread popularity as a Common Gateway Interface (CGI) scripting language, in part due to its regular expression and string parsing abilities. In addition to CGI, Perl is used for graphics programming, system administration, network programming, finance, bioinformatics, and other applications.