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

Jim Lucas wrote:

Daevid Vincent wrote:

Anyone have a function that will return an integer of the number of dimensions an array has? I did some quick searches and came up with nothing. The closest was here of someone asking the same thing, but his solution isn't right: http://www.bigresource.com/PHP-count-array-dimensions-VrIahx1b.html http://php.net/manual/en/function.count.php From a human standpoint, it's easy to see, "oh, this is a TWO dimensional"...

How about this... Using a slightly modified array that you posted, I came up with this in about 10 minutes <pre>I am working with the following data structure <?php $in = array( 0 => array(

    0 => array('Flight Number', 'flight_number'),
    1 => array(
        0 => array('Timestamp Departure', 'timestamp_departure'),
        1 => array('Timestamp Arrival', 'timestamp_arrival'),
      )
    ),

1 => array('Departure City', 'departure_city'), 2 => array('Arrival City', 'arrival_city'), ); print_r($in); echo "\n\n"; $max_depth = 0; $cur_depth = 0; function max_array_depth($ar) { global $cur_depth, $max_depth; if ( is_array($ar) ) { $cur_depth++; if ( $cur_depth > $max_depth ) { $max_depth = $cur_depth; } foreach ( $ar AS $row ) { max_array_depth($row); } $cur_depth--; } } max_array_depth($in); echo "Max depth of array is: {$max_depth}"; ?></pre> http://www.cmsws.com/examples/php/testscripts/daevid@daevid.com/0002.php

Globals are dirty for this kind of recursive utility function. Here's a cleaner example: <?php function get_array_depth( $array ) {

    if( !is_array( $array ) )
    {
        return 0;
    }

    $maxDepth = 0;
    foreach( $array as $value )
    {
        if( ($subDepth = get_array_depth( $value )) > $maxDepth )
        {
            $maxDepth = $subDepth;
        }
    }

    return 1 + $maxDepth;

} ?> Cheers, Rob. -- http://www.interjinn.com Application and Templating Framework for PHP