#!/usr/bin/perl
while($line = <DATA>){
@valid_entities= ('<a>','<td>','<th>','<var>','<br>');
my %htmlenties = map { $_ =>1 } @valid_entities;

$line =~  s/(<(\w+?)(>))/exists $htmlenties{$1} ? $1 : defined ($2) ? 
+"&lt;$2$3" : '&lt;'/eg;

print $line;
}

__DATA__
<Hello>Hi...<BR>how r u<br>

[download]
Can I replace '<' to '<' and '>' to '>' if it is not a HTML element? I have coded to replace < but not able to add >

In reply to Re^2: close end tag by Anonymous Monk
in thread close end tag by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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