associative-array

Possible Duplicate: Are PHP Associative Arrays ordered? If I add items to associative array with different keys, does order of addition conserved? How can I access "previous" and "next" elements of given element? Yes, php arrays have an implicit order. Use reset , next , prev and current - or just a foreach loop - to inspect it. Yes, it does preserve the order. you can think of php arrays as ordered hash maps . You can think of the elements as being ordered by "index creation time". For example $a = array(); $a['x'] = 1; $a['y'] = 1; var_dump($a); // x, y $a = array(); $a['x'] = 1; $a['y'] = 1

I am trying to select data into a pl/sql associative array in one query. I know I can do this with a hardcoded key, but I wanted to see if there was some way I could reference another column (the key column) instead. DECLARE TYPE VarAssoc IS TABLE OF varchar2(2) INDEX BY varchar2(3); vars VarAssoc; BEGIN SELECT foo, bar INTO vars(foo) FROM schema.table; END; I get an error saying foo must be declared when I do this. Is there some way to create my associate array in a single query or do I need to fall back on a FOR loop? Just read your comment on APC's answer, it sounds like you figured this

This question already has an answer here: Incompatible types List of List and ArrayList of ArrayList 6 answers Initialize List<List<Integer>> in Java 2 answers I want to understand the difference between the two definitions and why the correct one is correct and the wrong is wrong. The one showing me the compile-error List<List<Integer>> arr2 = new ArrayList<ArrayList<Integer>>(); The error it gave me : try2.java:8: error: incompatible types: ArrayList<ArrayList<Integer>> cannot be converted to List<List<Integer>> List<List<Integer>> arr2 = new ArrayList<ArrayList<Integer>>(); The one which is

At present, I’m struggling to find solution to either of the following problems: how to convert a normal array (indexed array with index starting at 0) into an associative array where value becomes a key and value itself is the value. Create a new assoc array from indexed array where values are keys. And this in a single statement. I know it can very well be done using a loop but for a huge sized array containing almost 500,000 elements, a loop is an overhead. Create an assoc array from the result of mysql sql query. I normally create an indexed array from a mysql sql query result as below:

I open a csv file from a url. Each line has 4 fields and each field has a name: Field1;Field2;Field3;Field4 Now my script handles the csv data as one single line but I want to have it this way: Array ( [0] => array( ['field1'] => 1 ['field2'] => 2 ['field3'] => 3 ['field4'] => 4 ) ) Any ideas? Here is my code: if (($handle = fopen ( $eurl, "r" )) !== FALSE) { while ( ($data = fgetcsv ( $handle, 4096, ";" )) !== FALSE ) { $num = count ( $data ); for($c = 0; $c < $num; $c ++) { echo $data [$c]; } } fclose ( $handle ); } t.csv id;name;sex;age 1;xudong;m;23 2;jack;f;24 3;minjie;f;25 <?php $eurl =

I have nested multidimensional arrays that may be 2 or 3 levels deep. Inside it I may or may not have list arrray. I need to loop over the array: Array ( [0] => Array ( [id] => 1 [name] => cat_name_1 [list] => Array ( [1] => swgdgbdg [2] => xcbcxb ) ) [1] => Array ( [id] => 3 [name] => cat_name_3 [list] => Array ( [0] => Array ( [id] => 1 [name] => cat_name_1 [list] => Array ( [1] => 543h54h [2] => 54hrhhfr2 ) ) [1] => Array ( [id] => 2 [name] => cat_name_2 [list] => Array ( [1] => eherfherh [2] => 4564642 ) ) [2] => Array ( [1] => erggb45yt [2] => jyuk768k ) [3] => Array ( [1] => sdgsdgsdg [2