Bug #73670 [NEW]: simplexml_load_string returns `FALSE` but does not set error (for empty strings

From: zerkms at zerkms dot ru Operating system: Irrelevant PHP version: Irrelevant Package: SimpleXML related Bug Type: Bug Bug description:simplexml_load_string returns FALSE but does not set error (for empty strings Description: ------------ simplexml_load_string() documentation states > Returns an object of class SimpleXMLElement with properties containing the data held within the xml document, or FALSE on failure. So I expect if FALSE is returned - it was failed to parse xml, so the libxml_get_last_error returns the actual error. What happens instead - for the empty string the simplexml_load_string returns false and libxml_get_last_error returns previous non actual error. It should be either a documentation additionally clarify the case, or the implementation behave accordingly. Test script: --------------- $previous = libxml_use_internal_errors(true); $doc = simplexml_load_string('foo'); libxml_use_internal_errors($previous); $result = libxml_get_last_error(); $previous = libxml_use_internal_errors(true); $doc = simplexml_load_string(''); libxml_use_internal_errors($previous); $result = libxml_get_last_error(); var_dump($doc, $result); Expected result: ---------------- bool(false) bool(false) Actual result: -------------- bool(false) object(LibXMLError)#2 (6) { ["level"]=> int(3) ["code"]=> int(4) ["column"]=> int(1) ["message"]=> string(34) "Start tag expected, '<' not found " ["file"]=> string(0) "" ["line"]=> int(1) } -- Edit bug report at https://bugs.php.net/bug.php?id=73670&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73670&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73670&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73670&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73670&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73670&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73670&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73670&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73670&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73670&r=support Expected behavior: https://bugs.php.net/fix.php?id=73670&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73670&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73670&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73670&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73670&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73670&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73670&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73670&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73670&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73670&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73670&r=mysqlcfg