How to Check if String contains only Numeric Digits in Perl - Step by Step Examples

How to Check if String contains only Numeric Digits in Perl ?

Answer

To check if a string contains only numeric digits in Perl, you can use regular expressions or functions like 'isdigit' to match numeric patterns in the string.

✐ Examples

1 Check if String contains only Numeric Digits using regular expressions

In this example,

We create a function 'contains_only_numeric_digits' that takes a string as input.
We use a regular expression pattern '^\d+$' to match only numeric digits in the string.
If the entire string matches the pattern, '1' is returned; otherwise, '0'.
Finally, we print the result.

Perl Program

sub contains_only_numeric_digits {
    my ($str) = @_;
    return $str =~ /^\d+$/;
}

my $str = '12345';
my $all_digits = contains_only_numeric_digits($str);
print "String contains only numeric digits: $all_digits\n";

Output

String contains only numeric digits: 1

Summary

In this tutorial, we learned How to Check if String contains only Numeric Digits in Perl language with well detailed examples.

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