#38986 [NEW]: Wrong example 1 -> Hash values of Password

From: charlie28u798r at web dot de Operating system: PHP version: Irrelevant PHP Bug Type: Documentation problem Bug description: Wrong example 1 -> Hash values of Password Description: ------------ There are 2 examples given in the documentation of crypt(), which cant work the way their shown. Example 2 will, as read in the documentation, give a different hash values each time its called. But it looks like its supposed to give the same hash for same passwords so a user given password can be compared with the one saved in a databank (or the on in htpasswd). <?php // Set the password $password = 'mypassword'; // Get the hash, letting the salt be automatically generated $hash = crypt($password); ?> Reproduce code: --------------- On the other hand example 1 is not clear. This wont work either, unless $user_input is given and it won't really state what it should do. From the code i would state it should be used to compare passwords, but like i said its not clear. <?php $password = crypt('mypassword'); // let the salt be automatically generated /* You should pass the entire results of crypt() as the salt for comparing a password, to avoid problems when different hashing algorithms are used. (As it says above, standard DES-based password hashing uses a 2-character salt, but MD5-based hashing uses 12.) */ if (crypt($user_input, $password) == $password) { echo "Password verified!"; } else echo "Wrong Password"; ?> Expected result: ---------------- Password verified Actual result: -------------- Wrong Password -- Edit bug report at http://bugs.php.net/?id=38986&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=38986&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=38986&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=38986&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=38986&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=38986&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=38986&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=38986&r=needscript Try newer version: http://bugs.php.net/fix.php?id=38986&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=38986&r=support Expected behavior: http://bugs.php.net/fix.php?id=38986&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=38986&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=38986&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=38986&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38986&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=38986&r=dst IIS Stability: http://bugs.php.net/fix.php?id=38986&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=38986&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=38986&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=38986&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=38986&r=mysqlcfg