Ascending and Descending dimension processing of PHP arrays

Recently learned a bit of PHP array of ascending and descending dimension, nonsense less, on the demo.

Suppose there is an array before descending, as follows $array = Array (' a ' = = = Array (' b ' = = 1, ' c ' = = = Array (' d ' = = 2, ' E ' + 3) '), ' f ' = = 4, ' g ' = = AR Ray (' H ' =>5));

After dimensionality reduction, the following:

Descending dimension $array = Array (    ' 0 ' = = a->b->1,    ' 1 ' = = a->c->d->2,    ' 2 ' = = A->c->e->3 ,    ' 3 ' = f->4,    ' 4 ' = g->h->5);

The following function is implemented:

/** * dimension arrays are reduced to a one-dimensional array, recursive implementation * @param unknown $arr * @param string $delimiter * @param string $key * @return boolean|  Ambigous <multitype:string, multitype:> */function multitosingle ($arr, $delimiter = ', $key = ') {$resultAry = Array (); if (! ( Is_array ($arr) && count ($arr) >0) {return false;} foreach ($arr as $k = = $val) {$newKey = Trim ($key. $k. $delimiter); if (Is_array ($val) && count ($val) >0) {$re Sultary = Array_merge ($resultAry, Multitosingle ($val, $delimiter, $newKey));} else {$resultAry [] = $newKey. $val;}} return $resultAry;}

The array has a descending must have ascending, ascending dimension comes:

/** * Wi Cheng a one-dimensional array to a multidimensional array * @param unknown $arr * @param string $delimiter * @return Multitype: */function singletomulti ($arr, $d Elimiter = ') {$endAry = array (); foreach ($arr as $key = = $val) {$sAry = explode ($delimiter, $val); $len = count ($sAr y); $ary = Array (); for ($i = $len-2; $i >-1; $i-) {if ($i = = $len-2) {$ary [$sAry [$i]] = $sAry [$i +1];} else {$ary = array ( $sAry [$i] = $ary);}} $endAry = Array_merge_recursive ($endAry, $ary);} return $endAry;}

The realization of the array of ascending and descending dimension, perhaps the implementation of the way is not good enough, please criticize correct!

Ascending and Descending dimension processing of PHP arrays