How to Replace a Variable in a Perl String

The Perl Web programming language lets you search for a variable and replace the original value with another. The function leaves other parts of the string intact, but it replaces the characters you set up to create a new string value. The search and replace function is beneficial when you need to replace content in a file or data information retrieved from a table.

Instructions

1. Right-click the Perl file you want to edit. Click "Open With," then click your Perl editor. You can also use Notepad to edit PL files.

2. Create your search and replace string. The following code searches for "red" and replaces each "red" value with "purple"

   $search =~ s/red/purple/;

3. Create the main string. You must define a string that you want to manipulate with the Perl search function. The following code shows you how to create a string in Perl:

   $sentence = "I love the color red.";

4. Replace the variable string with the new value. The following code changes the sentence in step three to "I love the color purple.":

   $sentence =~ $search;

References

• HTMLite: Search and Replace