#49437 [NEW]: Can't disable LIBXML_NOENT option

From: matt at matthewfagan dot com Operating system: ALL PHP version: 5.2.10 PHP Bug Type: SimpleXML related Bug description: Can't disable LIBXML_NOENT option Description: ------------ One of the options to simplexml_load_string is LIBXML_NOENT. This option cannot be turned off. Reproduce code: --------------- The prototype for the simplexml_load_string function is: object simplexml_load_string ( string $data [, string $class_name="SimpleXMLElement" [, int $options=0 [, string $ns [, bool $is_prefix=false ]]]] ) Note the "$options=0". However, it actually behaves like "$options=LIBXML_NOENT". There is no way to disable this behavior. Explicitly specifying 0 does not turn off LIBXML_NOENT. Code to reproduce: echo simplexml_load_string("<data>&amp;</data>", "SimpleXMLElement", 0); Expected result: ---------------- This should return "&amp;", because I have explicity turned off the LIBXML_NOENT option. However, "&amp;" is converted to "&" by libxml regardless of the specified options. It's as if the underlying C code is calling: libxml->load_string(data, classname, options | LIBXML_NOENT); (Note: not the real function names...) Actual result: -------------- Resolution: There would seem to be two resolutions. Either: a) Change the prototype so that the default value of $options is LIBXML_NOENT, allowing this to be overridden by specifying the options. OR b) Create a special LIBXML flag especially for PHP, such as LIBXML_KEEPENT that negates the LIBXML_NOENT flag. Note: This is not an important bug for me, because I will just ditch using SimpleXML and find another way, but I think it should still be on the books as a bug. -- Edit bug report at http://bugs.php.net/?id=49437&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49437&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49437&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49437&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49437&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49437&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49437&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49437&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49437&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49437&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49437&r=support Expected behavior: http://bugs.php.net/fix.php?id=49437&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49437&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49437&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49437&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49437&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49437&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49437&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49437&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49437&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49437&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49437&r=mysqlcfg