Re: Session: I RTFM

John, PHP looks for "$vars or {$vars} to parse in the string" when double quotes are used... whereas when single quotes are used, it won't parse/substitute the vars. <? // works: echo "My favourite fruit is {$fruit}"; echo "My favourite fruit is $fruit"; echo 'My favourite fruit is '.$fruit; // doesn't work: echo 'My favourite fruit is {$fruit}'; echo 'My favourite fruit is $fruit'; ?> So, when you're not using $vars, using single quotes will be marginally faster... perhaps not important on small sites, but very important on big ones, and a decent habbit to get into :) Justin on 15/12/02 12:30 PM, John Taylor-Johnston (taylorjo@collegesherbrooke.qc.ca) wrote: > Marco (or anyone) > > What is the difference between: > $familyname = getvar("familyname"); > and > $familyname = getvar('familyname'); > > What do single quotes do, as a general rule, that double cannot (he asks > remembering something, but not sure what)? > > > > > Marco Tabini wrote: > >> I haven't followed the rest of the thread, but how about using a >> function? >> >> function getvar ($varname) >> { >> if (isset ($_POST[$varname]) >> { >> $_SESSION[$varname] = $_POST[$varname]; >> return $_POST[$varname]; >> } >> elseif (isset ($_SESSION[$varname])) >> return $_SESSION[$varname]; >> } >> >> session_start(); >> >> // You don't need session_register anymore >> >> $familyname = getvar('familyname'); >> >> and so on--just one line per variable. >> >> Hope this helps. >> >> Cheers, >> >> Marco >> -- >> ------------ >> php|architect - The Magazine for PHP Professionals >> The monthly magazine dedicated to the world of PHP programming >> >> Check us out on the web at http://www.phparch.com! >> >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ----------------------------------------------------------------------------- >> ---------------------------------------------------- >> >> Subject: [PHP] Session: I RTFM >> Date: Sat, 14 Dec 2002 18:41:40 -0500 >> From: John Taylor-Johnston <taylorjo@collegesherbrooke.qc.ca> >> Reply-To: jtjohnston@courrier.usherb.ca >> Organization: FLSH, U-de-S >> To: php-general@lists.php.net >> >>> Jason wrote: >>> RTFM again. >> >> Jason, again, I RTFM, but did not get it working. >> Otherwise I wouldn't have dared ask a question. >> >>> Sessions depends on a number of factors >>> including your version of PHP and the setting of register_globals. >> >> The FM manual says: >> >> "$_SESSION (or $HTTP_SESSION_VARS with PHP 4.0.6 or less) is recommended" >> >> So I am using "PHP Version 4.1.2" (and "4.2.3" on my localhost to test >> offline) >> >> Ok. I quit using $HTTP_POST_VARS["familyname"]. >> >> With a little rethinking, I have this working, I hope. >> >> Now ... is there a cleaner way to assign my variable "familyname"? >> >> Pseudo code: >> >> if _post["familyname"] exists set session variable >> (no sense in setting it until I post it) >> if _session["familyname"] exists, $familyname = >> $_SESSION["familyname"]; >> >> I'll have about 30 variables. Going to be alot of lines. There must be an >> easier, cleaner way? >> >> <?php >> #session_name("TestALS"); >> session_start(); >> >> if (isset($_POST["familyname"])) >> { >> session_register("familyname"); >> $familyname = $_POST["familyname"]; >> echo "Yay: \$familyname= $familyname<br>"; >> } >> >> if (isset($_SESSION["familyname"])) >> { >> $familyname = $_SESSION["familyname"]; >> echo "yay session works, \$familyname= $familyname<br>"; >> } >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php > > -- > John Taylor-Johnston > ----------------------------------------------------------------------------- > "If it's not open-source, it's Murphy's Law." > > ' ' ' Collège de Sherbrooke: > ô¿ô http://www.collegesherbrooke.qc.ca/languesmodernes/ > - Université de Sherbrooke: > http://compcanlit.ca/ > 819-569-2064 > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > Justin French -------------------- http://Indent.com.au Web Development & Graphic Design --------------------