RE: [PHP] Re: If...Or...Else

On 25 July 2004 21:16, Skippy wrote: > Any idea why the need to have two logical operators with the > same meaning BUT > different precedences? I dig the need to put in OR as an > alias, but why > confuse people with the precedence issue? One would tend to > think || and OR > are perfectly interchangeable. It's a horses for courses situation -- each tends to lead to better readability when used in its appropriate context. For instance (to improve on the above example): $result = mysql_query(.....) or die(mysql_error()); would need extra parentheses if rewritten using the || operator: ($result = mysql_query(.....)) || die(mysql_error()); On the other hand, a construct like: $is_valid = $x>0 || $y>0; would need additional parentheses with or: $is_valid = ($x>0 or $y>0); Cheers! Mike --------------------------------------------------------------------- Mike Ford, Electronic Information Services Adviser, Learning Support Services, Learning & Information Services, JG125, James Graham Building, Leeds Metropolitan University, Headingley Campus, LEEDS, LS6 3QS, United Kingdom Email: m.ford@leedsmet.ac.uk Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211