Re: [PHP4BETA] suggestion for new function str_change(string str,array transtable [,bool reverse])

On Sat, 20 Nov 1999, Rasmus Lerdorf wrote: > > i think extending strtr() is cooler that creating a new function, but - > > how do we pass the "do-the-reverse" flag to the function? > > > > i think we could instead create an array_switch_key_and_value() function > > (with a nicer name) so that: > > > > $trans = array("ue" => "ü", "oe" => "ö"); > > $str = "oeluebung"; > > $str = strtr($str,$trans); // now $str is "ölübung"; > > $trans = array_switch_key_and_value($trans); // now $trans = array("ü" => > > "ue", "ö" => "oe") > > $str = strtr($str,$trans); // now $str is "oeluebung" again. > > Yes, I like this. How about just naming it flip() ? Or perhaps > array_flip()? There are all sorts of uses for this function on its > own. We'd have to figure out what to do in the case of: > > $a[0]="abc"; > $a[1]="abc"; > > Does $a[abc] become 0 or 1 after the flip? > > Or perhaps it becomes 2 on the theory that it might be cool to count the > number of instances of a particular index. I guess the behaviour could be > chosen with an argument. The choices being: > > - Select lowest value for multiply occurring indices > - Select highest value for multiply occurring indices > - Count number of occurences of index and make that the value for that index i like it, not sure about my girlfriend (it's weekend;-) i'l do the strtr() part now - rest to follow! tc > > -Rasmus > > Thies C. Arntzen "One Big-Mac, Small Fries and a Coke!" Digital Collections Phone +49 40 235350 Fax +49 40 23535180 Hammerbrookstr. 93 20097 Hamburg / Germany