note 79430 added to function.shmop-open

=== Checking if a shared memory exists === The solution provided by Mitchell_Shnier at ieee dot orgZ doesn't work on my computer - I get a warning "Invalid flag ac". In order to check if a shared-memory exists, you just have to open it with the "a" or "w" flag, while hiding the warnings using the "@" operator: <?php @$shid = shmop_open($systemId, "a", 0666, 0); if (!empty($shid)) { ... shared memory exists } else { ... shared memory doesn't exist } ?> ---- Server IP: 82.80.248.162 Probable Submitter: 217.132.178.244 ---- Manual Page -- http://www.php.net/manual/en/function.shmop-open.php Edit -- https://master.php.net/note/edit/79430 Del: integrated -- https://master.php.net/note/delete/79430/integrated Del: useless -- https://master.php.net/note/delete/79430/useless Del: bad code -- https://master.php.net/note/delete/79430/bad+code Del: spam -- https://master.php.net/note/delete/79430/spam Del: non-english -- https://master.php.net/note/delete/79430/non-english Del: in docs -- https://master.php.net/note/delete/79430/in+docs Del: other reasons-- https://master.php.net/note/delete/79430 Reject -- https://master.php.net/note/reject/79430 Search -- https://master.php.net/manage/user-notes.php