Re: Need routine to tell me number of dimensions in array.

Peter Lind wrote:

This is one example where references actually decrease memory usage. The main reason is the recursive nature of the function. Try <?php echo memory_get_usage() . PHP_EOL; $array = range(0,1000000); $array[10] = range(0,10); $array[20] = range(0,10); $array[30] = range(0,10); $array[40] = range(0,10); $array[50] = range(0,10); $array[60] = range(0,10); $array[70] = range(0,10); $array[80] = range(0,10); $array[90] = range(0,10); $array[100] = range(0,10); echo memory_get_usage() . PHP_EOL; carray($array); function carray ($array) {

    foreach ($array as $value)
    {
        if (is_array($value)) carray($value);
    }
    echo memory_get_usage() . PHP_EOL;
    echo count($array) . PHP_EOL;

} echo memory_get_usage() . PHP_EOL; And then compare with: <?php echo memory_get_usage() . PHP_EOL; $array = range(0,1000000); $array[10] = range(0,10); $array[20] = range(0,10); $array[30] = range(0,10); $array[40] = range(0,10); $array[50] = range(0,10); $array[60] = range(0,10); $array[70] = range(0,10); $array[80] = range(0,10); $array[90] = range(0,10); $array[100] = range(0,10); echo memory_get_usage() . PHP_EOL; carray($array); function carray (&$array) {

    $i = 0;
    foreach ($array as $value)
    {
        if (is_array($value)) carray($value);
    }
    echo memory_get_usage() . PHP_EOL;
    echo count($array) . PHP_EOL;

} echo memory_get_usage() . PHP_EOL; The memory usage spikes in the first example when you hit the second array level - you don't see the same spike in the second example. Regards Peter

Doh, forgot about that :) Cheers, Rob. -- http://www.interjinn.com Application and Templating Framework for PHP