newbie question: splitting arrays

[Anon]

simple question

how do I split one huge array in two smaller arrays?

is there a fuction where I can specify start- and end-index to get a part of an array?

e.g. $newarray = getArray(50,300,$hugearray)
would get me $newarray containing all elements from $hugearray[50] up to $hugearray[300]

philippo

[Anon]

In PHP4, there's the array_slice() function :

$newarray=array_slice($array,$offset,$length)

[Anon]

great! thanx!
is there anything similar in PHP3? (3.11)

[Anon]

No, in PHP3, you have to write your own function. Not too difficult if your array is numerically indexed (0,1,...). A bit slow for large arrays, maybe...

[Anon]

here's my own primitive function. It's not as good as the one of PHP4 but for what I'm using it should work fine:

function php3_array_slice($array,$offset,$length) {
$length = abs($length);
if ($length == 0) $high = count($array);
else $high = $offset+$length;
for($i = $offset; $i < $high; $i++) $new_array[$i-$offset] = $array[$i];
return $new_array;
}

If $length is set to 0, it'll return everything from offset up until the end of the array.

do you know any faster way to do it?

Philippo