CODEWITHSUNDEEP
phparrayskey
user2140857
user2140857

Reputation: 139

How to dynamically build a PHP array with keys and values

Using PHPGraphlib for a project.

The following adds data to the graph. The array values will be the y-axis value.

$graph->addData(array(100,12,43,342,9));

If the array has keys, the keys will be the corresponding x-axis values.

$data = array("1" => 100, "2" => 12, "3" => 43, "4" => 342, "5" => 9);

I need to dynamically build the $data array, starting with a key value of "1", and assign values from a variable separated by commas. The amount of values can change. For example:

$values="100,12,43,342,9,22,33";

I could explode the data into an array

$splits = explode(",",$values);

Now I have the number of values. So how do I code a loop to assign these values to incremental keys so that the $data array is essentially:

$data = array("1" => 100, "2" => 12, "3" => 43, "4" => 342, "5" => 9, "6" => 22, "7"=> 33);

Upvotes: 1

Views: 189

Answers (2)

Thomas Lomas
Thomas Lomas

Reputation: 1553

This should start the array as one indexed.

<?php
$values = "100,12,43,342,9,22,33";
$splits = explode(",", $values);
$data = array_combine(range(1, count($splits)), array_values($splits));
$data = array_map('intval', $data); // converts values to int

var_dump($data);

Upvotes: 2

hounded
hounded

Reputation: 726

something like this ? 

<?php
$values="100,12,43,342,9,22,33";
$splits = explode(",",$values);
$data = array();
for ($x = 0; $x < count($splits); $x++) {
    $data[$x+1] = intval($splits[$x],10);    
}

var_dump($data);

Upvotes: 3

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