What keys are generated when pushing an array element with empty square bracket syntax $array[]?

Question

$a[]="Anna";
$a[]="Brittany";
$a[]="Cinderella";
$a[]="Diana";
$a[]="Eva";
$a[]="Fiona";
$a[]="Gunda";

When declaring it this way, does it automatically increase the index? Why is this ideal?

What happens when you run that code and try to access the array? — Eric J.
– Eric J., Commented May 17, 2010 at 5:23
It's ideal because it makes adding new elements to the array a breeze! You don't have to deal with incrementing the index. — Mitch Dempsey
– Mitch Dempsey, Commented May 17, 2010 at 5:27
you can also do the same thing as: $a = array('Anna', 'Brittany' ... ) — Erik
– Erik, Commented May 17, 2010 at 5:27

Dominic Rodger · Accepted Answer · 2010-05-17 05:22:45Z

5

Yes it does. It may not be ideal for you, but it sure is convenient for most people.

answered May 17, 2010 at 5:22

Dominic Rodger

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Michael Aaron Safyan · Accepted Answer · 2010-05-17 05:35:29Z

1

Yes, it does. See the PHP arrays guide. Note that if you want to delete the array, you can use:

unset($a);

Or if you want to make $a become an empty array, you can use:

$a = array();

answered May 17, 2010 at 5:35

Michael Aaron Safyan

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1 Comment

user7675 Over a year ago

+1 for actually linking to the docs. Seriously, people.

b. e. hollenbeck · Accepted Answer · 2010-05-17 05:23:16Z

0

Yes, it does. It may not be 'ideal' - but considering that you're setting an array equal to a single value, adding to the array is better than overwriting the entire array, which I suppose would be the other option for that statement.

answered May 17, 2010 at 5:23

b. e. hollenbeck

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User123 · Accepted Answer · 2010-05-17 05:26:34Z

0

Yes, It automatically increasing a index but start with '0'.

answered May 17, 2010 at 5:26

User123

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Babiker · Accepted Answer · 2010-05-17 05:48:41Z

0

Yes its ideal, because if its not, then use an associative array.

answered May 17, 2010 at 5:48

Babiker

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