3

I need to add one array inside of another using array_push or something similar.

What I would like to achieve will look like this:

$years = array(
    "2017" => array("Value01", "Value02"),
    "2016" => array("Value03")
);

What would be the best way to create an array within another? I have tried the following:

array_push($years, "2016" => array());

This just gives a

500 error.

And:

array_push($years, "2016");

This does add a new array within $yearshowever it is called "2018" and the "2016" value is place inside that 2018 array. I have manually created the 2017 array already, so I assume it is just incrementing on that number for some reason.

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3
  • 3
    You can set the nested array by key: $years[2016] = ['value 1', 'value 2', 'value 3']; Commented Jul 19, 2017 at 10:13
  • 2
    no need to use array_push for this, simply write $years["2016"] = $array; Commented Jul 19, 2017 at 10:14
  • 1
    Read about PHP arrays. The answer to your question is in the section "Accessing array elements with square bracket syntax". Commented Jul 19, 2017 at 10:15

3 Answers 3

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3

Correct way to do with array_push():-

array_push($years, array("2016" => array()));

But what you want, for that do:-

$years["2016"]= array();

Output:- https://eval.in/834452

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0

Without push :

<?php 

$years = [];

$years[][] = 'value1';
$years[][] = 'value2';

var_dump($years);
?>

Or:

$years['someKey'] = [value1, value2 ....]
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Comments

0

in this case you dont need to use array_push there are many ways of doing it, for instance :

$years["whatever the key"]= array("whatever the value");

the result will be like :

$years = array(
"2017" => array("Value01", "Value02"),
"whatever the key" => array("whatever the value") );
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1 Comment

Php documentation says: "Note: If you use array_push() to add one element to the array, it's better to use $array[] = because in that way there is no overhead of calling a function."

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