append data in multidimensional array php - php

Question

I want to import my table data into multi-dimensional array in PHP, the table data is continuously updating, so the matrix has to be updated as soon as data is inserted in the table.
How do we create a multi-dimensional array, insert data into it and then append the data dynamically into the array?

Answer 1

Usually, you got a "normal" one-dimensional array out of your table.
To make a multidimensional-array out of it, you have to put the one-dimensional array into a multidimensional array.
To do this, you could use something like:
$i = 0; //initialize i
while ($i < count($array)) { //as long as i is smaller than the array
foreach ($array as $key => $value) { //walk along the array
$newArray[$i][$key] = $value; // set the multidimensional array
}
$i++; // count one up
}
With this, you should get a multidimensional array looking like:
array(
'0' => array(
'0' => 'foo'
'1' => 'bar'
)
'1' => array(
'0' => 'foo'
'1' => 'bar'
)
)
and so on... hope this helps

Answer 2

For what you want to do i think should should look at objects approach because form the following comments
Tom, the scenario is i am maintaining a table for term frequency in the documents, so my column1 will be the different terms in all the documents, and a new column is added for every new document and is inserted with the respective term count, and if it has any new term;
I can identify the following
Team
Document
Rather than make document null only update the required team information
Example
// Porpulate Teams
$teams = array_map(function ($v) {return new Team($v);}, range("A", "Z"));
// Porpulate Documents
$doc = new SplObjectStorage();
for($i = 0; $i < 100; $i ++) {
$doc->attach(new Document($teams[array_rand($teams)]));
}
usort($teams, function($a,$b){ return $b->frequency - $a->frequency;});
//Top 10 Teams
echo "<pre>";
foreach (array_slice($teams, 0,10) as $team ) {
echo "Team ", $team->name, "\t", $team->frequency, PHP_EOL;
}
Output
Team P 9
Team N 8
Team S 7
Team Q 6
Team M 6
Team D 6
Team O 5
Team G 5
Team K 5
Team F 5
Class Used
class Document {
function __construct(Team &$team) {
//Do your metrix
$team->frequency ++;
}
}
class Team {
public $name;
public $frequency = 0;
function __construct($name) {
$this->name = $name;
}
}