Re: Basic php code question

On Tue, Jan 30, 2018 at 3:07 PM, Dave <dealtek@gmail.com> wrote: > I could use a bit of help making sense of this inherited code... > > $_premises = array( > 'APARTMENTS'=>'APARTMENT','APT', > 'APTS'=>'APT', > 'ROOMS'=>'RM','RMS','RM', > '#'=>'APT#','APT #','SUITE#','SUITE > #','OFFICE#','OFFICE #','Suite'); > > > Q: when i see something like: > > 'APARTMENTS'=>'APARTMENT','APT', > > does that mean... > > 'APARTMENTS' can equal/match 'APARTMENT' ?and/or match? can equal > 'APT' > > or what does this mean? > No, not without writing code to do the mapping. This array mixes integer and string keys which PHP allows but causes confusion. Reformatting gives $_premises = array( 'APARTMENTS' => 'APARTMENT', 'APT', 'APTS' => 'APT', 'ROOMS' => 'RM', 'RMS', 'RM', '#' => 'APT#', 'APT #', 'SUITE#', 'SUITE #', 'OFFICE#', 'OFFICE #', 'Suite', ); The cases without a => will receive integer keys starting from zero. 0 => 'APT', 1 => 'RMS', etc. Likely it's used to validate/map a premise to a normalized form like this: if (!in_array($premise, $_premises)) { // valid premise? if (isset($_premises[$premise]) { // no, maps to a valid premise? $premis = $_premises[$premise]; // yes, map it } else { throw new InvalidArgumentException("Premise $premise is invalid"); } } // $premise is valid... Cheers! David