Doc #75140 [NEW]: session_id max length off 255 is too long with filesystem save handler

From: sebastian dot rapetti at alice dot it Operating system: Ubuntu 16.04 PHP version: 7.1.8 Package: Session related Bug Type: Documentation Problem Bug description:session_id max length off 255 is too long with filesystem save handler Description: ------------ Hi With default filesystem session handler: When use a custom session_id length as provided from php 7.1 with the options session.sid_length and set the value near the max value (251..255), operation fails. OS cannot create the file for store session values because file name is too long. Test script: --------------- //session.sid_bits_per_character default value 4 //work, file system has the 5 characters for the sess_ file name part. ini_set('session.sid_length', '250'); session_start(); //error from 251 to 255 ini_set('session.sid_length', '251'); session_start(); Expected result: ---------------- No error Actual result: -------------- With 251 Warning: session_start(): open(/var/lib/php/sessions/sess_ld3d1ome3tco3348uml0d4jpm4761n3i8lqui62t0aapf674jg3cjll4oehpmm1mi5u5r9jdaa3451f49eq541th9iom92qa062k6uviblshi8sdsbt4k1h82ae6c32gk75m87ub0176eugi812e9gbctkr2be8d51r5qno4racnjgtknf9jarcb3v4250p229mtueb1qecft82l9p16p0d1hh9ng7sfvibtvaj7ofbc16cphnc78j3kjmn, O_RDWR) failed: File name too long (36) in /home/sebastian/html/snippet/test.php on line 6 -- Edit bug report at https://bugs.php.net/bug.php?id=75140&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75140&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75140&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75140&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75140&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75140&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75140&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75140&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75140&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75140&r=support Expected behavior: https://bugs.php.net/fix.php?id=75140&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75140&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75140&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75140&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75140&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75140&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75140&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75140&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75140&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75140&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75140&r=mysqlcfg