associative-array

I have this array: $opening_hours = array( 'Monday' => array('09:00', '17:00'), 'Tuesday' => array('09:00', '17:00'), 'Wednesday' => array('08:00', '13:00'), 'Thursday' => array('09:00', '17:00'), 'Friday' => array('09:00', '17:00'), 'Saturday' => array('10:00', '16:00'), 'Sunday' => array('Closed'), ); I need to somehow merge those opening hours to the array which should look like this: $merged_opening_hours = array( 'Monday - Tuesday' => array('09:00', '17:00'), 'Wednesday' => array('08:00', '13:00'), 'Thursday - Friday' => array('09:00', '17:00'), 'Saturday' => array('10:00', '16:00');

Following is the output of my multidimensional array $csmap_data Array ( [0] => Array ( [cs_map_id] => 84 [cs_subject_id] => 1 ) [1] => Array ( [cs_map_id] => 85 [cs_subject_id] => 5 ) [flag] => 1 ) Initially there was no [flag] => 1 key-value in the array, I added it to the array $csmap_data . But I want to add the [flag] => 1 in the above two array elements, not as a separate array element. In short I wanted following output : Array ( [0] => Array ( [cs_map_id] => 84 [cs_subject_id] => 1 [flag] => 1 ) [1] => Array ( [cs_map_id] => 85 [cs_subject_id] => 5 [flag] => 1 ) ) The code I was trying

I've inherited some code which is going to be the base for some additional work. Looking at the stored procs, I see quite a lot of associative-arrays. Some of these are indexed by binary_integers, some by pls_integers. Are there any differences between the two? I had a look at the documentation , but apart from this line: The PL/SQL data types PLS_INTEGER and BINARY_INTEGER are identical. For simplicity, this document uses PLS_INTEGER to mean both PLS_INTEGER and BINARY_INTEGER . I couldn't find any difference between the two. So what's the difference? Are both around for historical

I'm looking for a fast way to turn an associative array in to a string. Typical structure would be like a URL query string but with customizable separators so I can use ' & ' for xhtml links or ' & ' otherwise. My first inclination is to use foreach but since my method could be called many times in one request I fear it might be too slow. <?php $Amp = $IsXhtml ? '&' : '&'; $Parameters = array('Action' => 'ShowList', 'Page' => '2'); $QueryString = ''; foreach ($Parameters as $Key => $Value) $QueryString .= $Amp . $Key . '=' . $Value; Is there a faster way? Greg You can use http_build_query() to

Lets say I have this array: $array = array('a'=>1,'z'=>2,'d'=>4); Later in the script, I want to add the value 'c'=>3 before 'z' . How can I do this? Yes, the order is important. When I run a foreach() through the array, I do NOT want this newly added value added to the end of the array. I am getting this array from a mysql_fetch_assoc() The keys I used above are placeholders. Using ksort() will not achieve what I want. http://www.php.net/manual/en/function.array-splice.php#88896 accomplishes what I'm looking for but I'm looking for something simpler. Take a sample db table with about 30

(This question uses PHP as context but isn't restricted to PHP only. e.g. Any language with built in hash is also relevant) Let's look at this example (PHP): function makeAFredUsingAssoc() { return array( 'id'=>1337, 'height'=>137, 'name'=>"Green Fred"); } Versus: class Fred { public $id; public $height; public $name; public function __construct($id, $height, $name) { $this->id = $id; $this->height = $height; $this->name = $name; } } function makeAFredUsingValueObject() { return new Fred(1337, 137, "Green Fred"); } Method #1 is of course terser, however it may easily lead to error such as

Recently I have read about hash-tables in a very famous book " Introduction to Algorithms ". I haven't used them in any real applications yet, but want to. But I don't know how to start. Can anyone give me some samples of using it, for example, how to realize a dictionary application (like ABBYY Lingvo) using hash-tables? And finally I would like to know what is the difference between hash-tables and associative arrays in PHP, I mean which technology should I use and in which situations? If I am wrong (I beg pardon) please correct me, because actually I am starting with hash-tables and I have