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a simple string substitution does not work

a simple string substitution does not work

a simple string substitution does not work

(OP)
Below is my codes:

CODE

my $string1 = '<td><a href="http://www.aaa.com/downloads/details.aspx?FamilyID=a1b2c3">abcdefg</a><br />(123456)</td>';
my $string2 = 'http://www.aaa.com/downloads/details.aspx?FamilyID=a1b2c3';


print "Before string substitution:\n$string1\n";
$string1 =~ s/$string2//;
print "After string substitution:\n$string1\n"; 

And the actual output:

CODE

Before string substitution:
<td><a href="http://www.aaa.com/downloads/details.aspx?FamilyID=a1b2c3">abcdefg</a><br />(123456)</td>
After string substitution:
<td><a href="http://www.aaa.com/downloads/details.aspx?FamilyID=a1b2c3">abcdefg</a><br />(123456)</td> 

What I expect:

CODE

Before string substitution:
<td><a href="http://www.aaa.com/downloads/details.aspx?FamilyID=a1b2c3">abcdefg</a><br />(123456)</td>
After string substitution:
<td><a href="">abcdefg</a><br />(123456)</td> 

could someone please tell me what is wrong in my code?

Thanks.

RE: a simple string substitution does not work

One way is to escape chars that have special meaning in regexps, or to declare $string2 as a regexp and use the escape character:

CODE -->

my $string2='http:\/\/www\.aaa\.com\/downloads\/details.aspx\?FamilyID=a1b2c3';
my $string2=qr|\Qhttp://www.aaa.com/downloads/details.aspx?FamilyID=a1b2c3|; 

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