Function:existvalue()

function existValue($testval)
{
if(isset($testval) && !empty($testval))
return 1;
else
return 0;
}

咦?好似有d蹺溪...
呢個function係我用o黎學起php function用o既...
原則上好似若佢唔係empty就係isset...睇o黎要modify喇

anyway,
總之function就要有以上high light左o既元素o既!