I dont understand, i assume that would check if name was set, i also set functions like
function foo($name,$bar = null) {
}
so therefore bar doesnt need to be inputted, seeing as i set it to null would i check if $bar===true ? or just isset($bar ) ?
when you have set $bar in that fashion then isset($bar) will come out as false.
And $bar === true will only become true, if $bar is true, look at table K-3 here http://www.php.net/manual/en/types.comparisons.php
/Martin
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