Bug #73731 [NEW]: in_array does not find NAN value

From: desinformatsioon at gmail dot com Operating system: Ubuntu 16.04 PHP version: 7.0.14 Package: Arrays related Bug Type: Bug Bug description:in_array does not find NAN value Description: ------------ Currently in_array(NAN, [0,NAN, null]) results with false but I would expect true would be proper as NAN is indeed in haystack. Test script: --------------- <?PHP echo "in_array(0, [0,NAN, null]) should result true" . PHP_EOL; var_dump(in_array(0, [0,NAN, null])); echo "in_array(null, [0,NAN, null]) should result true" . PHP_EOL; var_dump(in_array(null, [0,NAN, null])); echo "in_array(NAN, [0,NAN, null]) should result true but result false" . PHP_EOL; var_dump(in_array(NAN, [0,NAN, null])); Actual result: -------------- xxxx:~/code/$ php x.php in_array(0, [0,NAN, null]) should result true xxxx/x.php:4: bool(true) in_array(null, [0,NAN, null]) should result true xxxx/x.php:7: bool(true) in_array(NAN, [0,NAN, null]) should result true but result false xxxx/x.php:10: bool(false) -- Edit bug report at https://bugs.php.net/bug.php?id=73731&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73731&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73731&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73731&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73731&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73731&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73731&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73731&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73731&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73731&r=support Expected behavior: https://bugs.php.net/fix.php?id=73731&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73731&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73731&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73731&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73731&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73731&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73731&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73731&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73731&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73731&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73731&r=mysqlcfg