Re: [PHP] LOCKS???
[email protected] (Paul M Foster)
| Newsgroups | php.general |
|---|---|
| Message-ID | <[email protected]> |
On Sun, Nov 27, 2016 at 07:59:58PM -0500, Aziz Saleh wrote: > On Sun, Nov 27, 2016 at 6:37 PM, Tedd Sperling <[email protected]> > wrote: > > > Hi gang: > > > > I’ve read a bunch about MYSQL LOCKs, but I can seem to get them to work. > > > > For example, I have two computers accessing the same host (i.e., thus each > > with different SIDs) and accessing two different scripts. One script > > performs a "LOCK TABLES t WRITE" and the second script tries to read TABLE > > t. While the LOCK is in place, the second script has no problem reading and > > writing to TABLE t. > > > > I don’t understand what's wrong — any ideas? [snip] > You are running a LOCK on writes, not reads, so the second script is > performing fine. > > Also you don't need multiple sessions to test LOCK mechanism, should be > able to test it with just 1 session. > > http://dev.mysql.com/doc/refman/5.7/en/lock-tables.html Read what Tedd wrote again. The second script is reading and WRITING to the tables. Paul -- Paul M. Foster http://noferblatz.com http://quillandmouse.com