PHP - Appending to array within a loop [duplicate]

Question

How do I append elements to an array within a loop? For example, I am using a library to render a graph.

I wish to add values to the graph like so:

$data = array();

for ($x=0; $x<=50; $x++)
{
    $data["00:".x] = rand(-10, 30);
}

So in theory I should have the elements "00:00", "00:01", "00:02" etc. all with a random number as their value. However, the library does not then render the graph.

I'm guessing it's because I don't understand PHP enough. How do I go about trying to achieve this?

You should add error_reporting(-1); to enable proper debugging; also consider adding var_dump($data); to see where things went wrong. — Ja͢ck
– Ja͢ck, Commented Feb 1, 2014 at 2:01

John Conde · Accepted Answer · 2014-02-01 01:58:26Z

3

You're missing the leading zeros for values of $x 0 through 9. You're also missing the dollar sign before your variable $x:

for ($x=0; $x<=50; $x++)
{
    $data["00:".str_pad($x, 2, "0", STR_PAD_LEFT)] = rand(-10, 30);
}

answered Feb 1, 2014 at 1:58

John Conde

220k100 gold badges464 silver badges504 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

PHP - Appending to array within a loop [duplicate]

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related