I did 4 tries

my $p_sAction = $oCGI->param( "action" );
$p_sAction = decode( 'UTF-8', $p_sAction );
if ( !defined( $p_sAction ) ){
    print $oCGI->redirect( "access-denied.pl?reason=110" );
    exit;
}
print "Content-type: text/html\n\n";
print "<html><head><meta charset=\"UTF-8\"></head>";
print "p_sAction: #" . $p_sAction . "#<br>";
print "1510 --- #$p_sAction# eq #$aText{'1510'}#<br><br>";

[download]

Output:
p_sAction: #Benutzer l&#65533;schen#
1510 --- #Benutzer l&#65533;schen# eq #Benutzer löschen#

[download]
my $p_sAction = $oCGI->param( "action" );
$p_sAction = decode( 'UTF-8', $p_sAction );
if ( !defined( $p_sAction ) ){
    print $oCGI->redirect( "access-denied.pl?reason=110" );
    exit;
}
print "Content-type: text/html\n\n";
print "<html><head><meta charset=\"UTF-8\"></head>";
print "p_sAction: #" . $p_sAction . "#<br>";
$aText{'1530'} = decode( 'UTF-8', $aText{'1510'} );
print "1510 --- #$p_sAction# eq #$aText{'1510'}#<br><br>";

[download]

Output:
p_sAction: #Benutzer l&#65533;schen#
1510 --- #Benutzer l&#65533;schen# eq #Benutzer löschen#

[download]
my $p_sAction = $oCGI->param( "action" );
$p_sAction = decode( 'UTF-8', $p_sAction );
if ( !defined( $p_sAction ) ){
    print $oCGI->redirect( "access-denied.pl?reason=110" );
    exit;
}
print "Content-type: text/html\n\n";
print "p_sAction: #" . $p_sAction . "#<br>";
print "1510 --- #$p_sAction# eq #$aText{'1510'}#<br><br>";

[download]

Output:
p_sAction: #Benutzer löschen#
1530 --- #Benutzer löschen# eq #Benutzer löschen#

[download]
my $p_sAction = $oCGI->param( "action" );
$p_sAction = decode( 'UTF-8', $p_sAction );
if ( !defined( $p_sAction ) ){
    print $oCGI->redirect( "access-denied.pl?reason=110" );
    exit;
}
print "Content-type: text/html\n\n";
print "p_sAction: #" . $p_sAction . "#<br>";
$aText{'1530'} = decode( 'UTF-8', $aText{'1510'} );
print "1510 --- #$p_sAction# eq #$aText{'1510'}#<br><br>";

[download]

Output:
p_sAction: #Benutzer löschen#
1530 --- #Benutzer löschen# eq #Benutzer löschen#

[download]


Still nothing matchs...
Update: If I add 
if ( $p_sAction eq "Benutzer löschen" ){
    print "HELLO WORLD 22222 - Benutzer löschen<br>";
}

[download]
it works ... so it has to be the encoding of $aText{'1510'} I'd say. Doesn't it?
I store the text in db like this: "Benutzer%20l%26ouml%3Bschen" (uriescaped_utf8), when I receive it, I uriunescape it and then I compare...

I read on stackoverflow (http://stackoverflow.com/questions/17599103/perl-comparing-2-accentuated-strings-with-different-encodingone-being-read-from) using Unicode::Normalize::NFD could help. For me it just makes it more worse.

In reply to Re^2: Decode umlauts on CGI-parameters by Yaerox
in thread Decode umlauts on CGI-parameters by Yaerox

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