Simpler way to set multiple array slots to one value in PHP

Question

I'm using php, and it is pretty much the same as this C++ question: link I'm wondering if there is an easier way to do it than making a function.

Example code

array[9] = 1;
array[5] = 1;
array[14] = 1;

array[8] = 2;
array[15] = 2;
array[23] = 2;
array[12] = 2;

Edit : by easier I mean less tedious and less lines

Generally speaking, to have exactly this array, you need to code it manually. But there are some functions that may be interesting to you: http://us2.php.net/manual/en/function.array-fill.php and http://us2.php.net/manual/en/function.range.php. — Alex, Nov 18 '13 at 20:56

score 2 · Answer 1 · answered Nov 18 '13 at 21:00

2

you can use PHP 5.4+ array_fill_keys()

$a = array_fill_keys([9,5,14], 1);
$b = array_fill_keys([8,15,23,12], 2);

PHP 5.2+ (thanks jszobody)

$a = array_fill_keys(array(9,5,14), 1);
$b = array_fill_keys(array(8,15,23,12), 2);

answered Nov 18 '13 at 21:00

liam.derossi

Better answer than what I had, deleted mine. Just note that the square bracket syntax only works in PHP 5.4+. Otherwise you have to do `array_fill_keys(array(9,5,14), 1)` – jszobody Nov 18 '13 at 21:01
quick question here: if the array $a already exists and I am just modifying the elements, will this still work? – David Mckee Nov 18 '13 at 21:12
i don´t understand the question. – liam.derossi Nov 18 '13 at 21:37

1 Answers1