Except that doesn't do what you think it does... $a = [[[1,2]]];
The depth here is clearly 3. But count($a, COUNT_RECURSIVE); gives 4: http://codepad.viper-7.com/7xPYCu It counts the total number of elements in the array, and any child arrays (including the child array)... Also: constants exist for a reason. I'd suggest not doing count($a, 1), but using the reserved constant: count($a, COUNT_RECURSIVE). Not only does it make it future proof (for example, what if the value of 1 changed in the future), it also makes it easier to read the function call... Anthony On Fri, May 18, 2012 at 5:03 PM, Donald Organ <dor...@donaldorgan.com> wrote: > http://us.php.net/count > > $size = count($array, 1); > > > On Fri, May 18, 2012 at 4:54 PM, Anthony Ferrara <ircmax...@gmail.com> > wrote: >> >> Another trick would be to not use function recursion, but a recursive >> iterator: >> >> http://codepad.viper-7.com/9PeM9c >> >> function maxDepth(array $a) { >> $it2 = new RecursiveIteratorIterator( >> new RecursiveArrayIterator($a) >> ); >> $max = 0; >> foreach ($it2 as $val) { >> $max = max($max, $it2->getDepth()); >> } >> return $max; >> } >> >> It will actually process less data, since the >> RecursiveIteratorIterator mode is to skip non-leaf nodes (in other >> words, elements that are arrays). So the max() call will only ever be >> called for non-array values... A micro-optimization for sure, but >> something worth noting... >> >> Anthony >> >> >> On Fri, May 18, 2012 at 4:48 PM, justin <jus...@justinhileman.info> wrote: >> > function array_depth($el) { >> > return is_array($el) ? max(array_map('array_depth', $el)) + 1 : 0; >> > } >> > >> > var_dump(array_depth($array)); >> > >> > >> > -- justin >> > >> > >> > >> > On Fri, May 18, 2012 at 1:27 PM, Joey Derrico <joeyd...@gmail.com> >> > wrote: >> >> I am trying to count the number of dimensions in an array. I used my >> >> google-fu and came up with answers that don't actually work because I >> >> can >> >> have multi-dimensional array's where one int he middle is multi and the >> >> one >> >> after not. Below is my latest set of test code (I have been playing >> >> with it >> >> for hours (with varying results), none correct), It currently returns >> >> 15 >> >> dimensions and should be returning 5 >> >> >> >> <?php >> >> echo "\n"; >> >> $test = new test(); >> >> >> >> $array = array(); >> >> $array[0] = '[0]'; >> >> $array[1][0] = '[1][0]'; >> >> $array[1][1] = '[1][1]'; >> >> $array[2][0][0] = '[2][0][0]'; >> >> $array[2][0][1] = '[2][0][1]'; >> >> $array[2][1][0] = '[2][1][0]'; >> >> $array[2][1][1] = '[2][1][1]'; >> >> $array[3][0][0][0] = '[3][0][0][0]'; >> >> $array[3][0][0][1] = '[3][0][0][1]'; >> >> $array[3][1][0][0] = '[3][1][0][0]'; >> >> $array[3][1][0][1] = '[3][1][0][1]'; >> >> $array[3][1][1][0] = '[3][1][1][0]'; >> >> $array[3][1][1][1] = '[3][1][1][1]'; >> >> $array[4][0][0][0][0] = '[4][0][0][0][0]'; >> >> $array[4][0][0][0][1] = '[4][0][0][0][1]'; >> >> $array[4][1][0][0][0] = '[4][1][0][0][0]'; >> >> $array[4][1][0][0][1] = '[4][1][0][0][1]'; >> >> $array[4][1][1][0][0] = '[4][1][1][0][0]'; >> >> $array[4][1][1][0][1] = '[4][1][1][0][1]'; >> >> $array[4][1][1][1][0] = '[4][1][1][1][0]'; >> >> $array[4][1][1][1][1] = '[4][0][0][0][1]'; >> >> $array[5][0][0][0] = '[5][0][0][0]'; >> >> $array[5][0][0][1] = '[5][0][0][1]'; >> >> $array[5][1][0][0] = '[5][1][0][0]'; >> >> $array[5][1][0][1] = '[5][1][0][1]'; >> >> $array[5][1][1][0] = '[5][1][1][0]'; >> >> $array[5][1][1][1] = '[5][1][1][1]'; >> >> $array[6][0][0] = '[6][0][0]'; >> >> $array[6][0][1] = '[6][0][1]'; >> >> $array[6][1][0] = '[6][1][0]'; >> >> $array[6][1][1] = '[6][1][1]'; >> >> $array[7][0] = '[7][0]'; >> >> $array[7][1] = '[7][1]'; >> >> $array[8] = '[8]'; >> >> >> >> echo 'The array has '.$test->countNumberOfDimensionsOfAnArray($array)." >> >> dimensions\n"; >> >> //echo print_r($array,TRUE); >> >> >> >> >> >> class test >> >> { >> >> public function isMultDimensionalArray($array) >> >> { >> >> $return = FALSE; >> >> >> >> if(is_array($array)){ >> >> foreach($array as $value){ >> >> if(is_array($value)){ >> >> $return = TRUE; >> >> } >> >> } >> >> } >> >> return $return; >> >> } >> >> >> >> public function countNumberOfDimensionsOfAnArray($array) >> >> { >> >> $dimensions = 0; >> >> >> >> if(is_array($array)){ >> >> $dimensions++; >> >> foreach($array as $key=>$value){ >> >> if($this->isMultDimensionalArray($value)){ >> >> $dimensions = $dimensions + >> >> $this->countNumberOfDimensionsOfAnArray($value); >> >> } >> >> } >> >> } >> >> return $dimensions; >> >> } >> >> } >> >> ?> >> >> >> >> Joey Derrico >> >> >> >> _______________________________________________ >> >> New York PHP User Group Community Talk Mailing List >> >> http://lists.nyphp.org/mailman/listinfo/talk >> >> >> >> http://www.nyphp.org/show-participation >> > >> > >> > >> > -- >> > http://justinhileman.com >> > _______________________________________________ >> > New York PHP User Group Community Talk Mailing List >> > http://lists.nyphp.org/mailman/listinfo/talk >> > >> > http://www.nyphp.org/show-participation >> _______________________________________________ >> New York PHP User Group Community Talk Mailing List >> http://lists.nyphp.org/mailman/listinfo/talk >> >> http://www.nyphp.org/show-participation > > > > _______________________________________________ > New York PHP User Group Community Talk Mailing List > http://lists.nyphp.org/mailman/listinfo/talk > > http://www.nyphp.org/show-participation _______________________________________________ New York PHP User Group Community Talk Mailing List http://lists.nyphp.org/mailman/listinfo/talk http://www.nyphp.org/show-participation
