二維數組排序

<?phpfunction arr_sort($data){    $len = count($data);    for($i=0;$i<$len;$i++){  $ilen = count($data[$i]);for($j=0;$j < $ilen;$j++){  $m = $data[$i][$j]; $mpos1 = $i; $mpos2 = $j; if( !isset($data[$i][$j+1]) ){$ii = $i+1;$jj = 0; }else{$ii = $i;$jj = $j+1; } for($ii; $ii<$len; $ii++){$iilen = count($data[$ii]);for($jj; $jj<$iilen; $jj++){ if($m > $data[$ii][$jj]){$m = $data[$ii][$jj];$mpos1 = $ii;$mpos2 = $jj; } if($jj == ($iilen-1)){$jj = 0;break; }} } if($i!=$mpos1 || $j!=$mpos2){$data[$i][$j] = ($data[$i][$j] + $data[$mpos1][$mpos2]);$data[$mpos1][$mpos2] = ($data[$i][$j] - $data[$mpos1][$mpos2]);$data[$i][$j] = ($data[$i][$j] - $data[$mpos1][$mpos2]); } if($j == ($ilen-1)){$j = 0;break; }}  }  return $data;}$data[0] = array(5,8,11,55,77);$data[1] = array(1,2,3,9);print_r(arr_sort($data));

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