在PHP中快速创建大型数组[重复]

Question

Possible Duplicate:
How to create an empty array in PHP with predefined size?

In a C-based language, you can very quickly create a large multi-dimensional array that you might use in conjunction with loops for an algorithm or something. Like so:

int foo[50][40];

In PHP, how can you do this? At the moment, the only way I can think of is this:

$bar = array();
for ($a = 0; $a<50; $a++) {
    for ($b = 0; $b++; $b<40) {
        $bar[$a][$b] = 0;
    }
}

Answer 1

In PHP, you don't have to predefine the size of your array, you can dynamically append it with data, like so:

$bar = array();
for($i = 0;$i < 50;$i++) {
    $bar[] = $i;
}

By calling the $bar with [], you'll indicate that a new key should be created and in this case hold value $i.