Add array using array_push in multidemsional array php

Question

I have array of data which looks like this:-

$a = array(
    array(
        'amount' => 1.2,
    ),
    array(
        'amount' => 0.53,
    ),
    array(
        'amount' => 25.2,
    )
);

and another array

$n = array(
    'amount' => 12.98,
);

and then I use array_push

$p = array_push($a,$n);
print_r($p);

But the end result I get is

I want the array to be like :-

array(
    array(
        'amount' => 1.2,
    ),
    array(
        'amount' => 0.53,
    ),
    array(
        'amount' => 25.2,
    ),
    array(
        'amount' => 12.98,
    )
);

What is thing which I am doing wrong? How can I fix it? Please help.

Open please a manual.

u_mulder
– u_mulder

2018-08-31 15:42:14 +00:00
Commented Aug 31, 2018 at 15:42 — u_mulder
– u_mulder, Commented Aug 31, 2018 at 15:42

AbraCadaver · Accepted Answer · 2018-08-31 15:45:29Z

1

array_push pushes the second argument onto the array specified in the first argument. It returns the new number of elements, so:

array_push($a, $n);
print_r($a);

Or if you need a new array:

$p = array_merge($a, array($n));
print_r($p);

//or

$p = $a;
$p[] = $n;
print_r($p);

If a new array isn't needed, this is easier:

$a[] = $n;
print_r($a);

edited Aug 31, 2018 at 15:45

answered Aug 31, 2018 at 15:42

AbraCadaver

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Comments

AymDev · Accepted Answer · 2018-08-31 15:55:17Z

0

This behaviour is normal as array_push()'s 1st argument is passed by reference and:

Returns the new number of elements in the array.

You just need to use it as:

array_push($a,$n);
echo '<pre>' . print_r($a, true) . '</pre>';

Or you could use the array_push shorthand:

$a[] = $n;

edited Aug 31, 2018 at 15:55

answered Aug 31, 2018 at 15:42

AymDev

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3 Comments

AymDev Over a year ago

Of course it wasn't you, but I wonder why someone did it without any comment.

AbraCadaver Over a year ago

Before the edit is was the exact same as an existing answer, and that is not short array syntax and has always been available in PHP.

AymDev Over a year ago

You are right about short array syntax, corrected this. We were probably typing at the same time. If I was downvoting for similar answers posted after mine every time I'd be downvoting a lot.

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