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Bug #42865 strip_tags() doesn't respect the given allowable tag
Submitted: 2007-10-05 10:51 UTC Modified: 2007-10-06 10:12 UTC
From: kraghuba at in dot ibm dot com Assigned:
Status: Not a bug Package: Strings related
PHP Version: 5CVS-2007-10-05 (snap) OS: windows XP,linux
Private report: No CVE-ID: None
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From: kraghuba at in dot ibm dot com
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 [2007-10-05 10:51 UTC] kraghuba at in dot ibm dot com
strip_tags() doesn't respect the given allowable tag. for example 
  var_dump(strip_tags("<html>Hello World</html>", "<<html>>") );

given the allowable tag as "<<html>>" allows the <html> tag which, i think is not desirable. <<html>> is not same as <html>.

Reproduce code:
   var_dump( strip_tags("<html>Hello World</html>", "<<html>>") );

Expected result:
string(11) "Hello World"

Actual result:
string(24) "<html>Hello World</html>"


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 [2007-10-06 10:12 UTC]
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at and the instructions on how to report
a bug at

This function isn't made for wrong usage.
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