Re: Arrays

As long as you use dont need the index's to be numerically in order. ie. $array[0] = 'c'; $array[1] = 'h'; $array[2] = 'r'; $array[3] = 'i'; $array[4] = 's'; foreach ($array as $pos => $val) { // will display 'chris' echo "$val \n"; } unset $array[1]; foreach ($array as $pos => $val) { // will display 'cris' echo "$val \n"; } Chris Lee On Sun, 13 Aug 2000, Glover George wrote: > This may sound trivial, but its causing me a headache right now. When I > first looked around in php and its similarities to c++ I noticed there are > no std container classes (you know, like the standard template library). > Specifically what I am looking for is the list data structure. The array > seems to do most of the things the list does, such as poping and pushing and > such. But why is there no way to delete an item from the middle of an > array? I forgot the algorithm I used in c++ and that's what's causing me > the headache. I know I can simply create a second array and copy only the > values I want to keep into the temp array, and then after zeroing out the > first array, copy the values back into it. However, that's kinda costly > since I already have the worlds most "for" statements in a page :) > > So 2 questions: > > 1. Does anybody have a good algorithm for deleting a single item out of an > array? > > 2. If I am going to use my method, once I have filled my temporary array > with the wanted values, will somthing like the following work? > > $original_array = array_values($temp_array); > > or will I have to zero the original array out first? > > Thanks. > > >