Re: sql query

From: Date: Wed, 02 Mar 2005 16:06:40 +0000
Subject: Re: sql query
References: 1  Groups: php.general 
Request: Send a blank email to php-general+get-209809@lists.php.net to get a copy of this message
On Wed, 2 Mar 2005 13:02:39 +0200, William Stokes <kalles@operamail.com> wrote: > Hello > > Can someone explain this to me. I don't know how to read this. > > if (!$variable = mysql_query("select id,sessid from users where ... > > What is this "if(!" This is a way to run a SQL query, capture the return value, and perform an action if the query failed. For code readability, I would probably write that as two statements: $variable = mysql_query("SELECT * FROM blah"); if(!$variable) { error_handler(mysql_error()); } See the documentation for information on mysql_query return values: http://us2.php.net/manual/en/function.mysql-query.php Jason

« previous php.general (#209809) next »