Re: Weird Behaviour of Array

On Sun, 2012-03-04 at 20:01 +0530, Ruwan Pathmalal wrote: > Hi People, > I confused with weird behaviour of array. Following is my script. > > <?php > $array = array( > '12_1'=>array( > 56=>array( > 23=>'23', > 33=>'33') > ), > '12_5'=>array( > 55=>'55' > ) > ); > > $array['12_5'][55][45] = '45'; > $array['12_5'][55][56] = '76'; > $array['12_5'][55][85] = '85'; > $array['12_5'][55][96] = '96'; > print_r($array); > ?> > > Output is -: > Array ( [12_1] => Array ( [56] => Array ( [23] => 23 [33] => 33 ) ) [12_5] > => Array ( [55] => 55 4 7 8 9 ) ) > > Sometime this is because, first time $array['12_5'][55] not an array. I > assigned value to it like array. (I suppose overwrite key and then assign > given value as key value pair). See this part of output [12_5] => Array ( > [55] => 55 4 7 8 9 ). It compose 4 from 45, 7 from 76, 8 from 85 like that > (first digit of assigned values). > > I manage to overcome this problem by unsettling $array['12_5'][55] before > assigning value to it. > > But I want to know why this happening or is this PHP bug ? (Clear > explanation for situation :) ) > > Thanks > Ruwan I think because $array['12_5'][55] is originally a string, and PHP allows you to treat them as arrays of characters (like C++) what is happening is some odd setting of values within the string. This is why when you unset the value or define it as a blank array it is working as expected. -- Thanks, Ash http://www.ashleysheridan.co.uk