split Function, delimiter, Regular Expression functions

Tutorials

Perl

Topic

What is split() Function in Perl?
How to split up a string using regular expression delimiter?

Explanation

The split() function is used to split up a string using a regular expression delimiter or a character or a string.

Syntax:

     split (string);

In the above syntax, split() function takes a "string" as the argument.

Example to split string using regular expression delimiter:

    #! C:\programfiles\perl\bin\perl
    print "content-type: text/html\n\n";
    $str1 = "how,are,you";
    $str2 = "how!!are!!you";
    $str3 = "how1are2you";
    @val1 = split(",", $str1);
    @val2 = split('!!', $str2);
    @val3 = split(/\d+/, $str3);
    print "Removed the character Comma","\n";
    print "<br>";
    foreach $val1 (@val1)
     {
       print "$val1\n";
     }
    print "<br>";
    print "Removed the string '!!'";
    print "<br>";
    foreach $val2 (@val2)
     {
       print "$val2\n";
     }
    print "<br>";
    print "Removed the decimals 1,2";
    print "<br>";
    foreach $val3 (@val3)
     {
       print "$val3\n";
     }

Result:

    Removed the character Comma
    how are you
    Removed the string '!!'
    how are you
    Removed the decimals 1,2
    how are you

In the above example the string "howareyou" is seperated first with a comma, then by a string "!!", at last seperated by decimals "1,2", which is removed using a regular expression "/\d+/". All these strings are split and stored in an array, then using a loop its returned one by one.

split() Function of Regular Expression in Perl