PHP如何统计数组元素个数

3. $arr = array(

4. '1011,1003,1008,1001,1000,1004,1012',
5. '1009',
6. '1011,1003,1111'
7. );
8. $result = array();
9. foreach ($arr as $str) {
10. $str_arr = explode(',', $str);
11. foreach ($str_arr as $v) {
12. $result[$v] = isset($result[$v]) ? $result[$v] : 0;
13. $result[$v] = $result[$v] + 1;
14. }
15. }
16. print_r($result);
17. echo '
    ';
18. $set=array();
19. array_walk($arr,function($c) use (&$set ) {
20. $elements=explode(',',$c);
21. array_walk($elements,function($d) use(&$set){
22. isset($set[$d])? $set[$d]++:$set[$d]=1;
24. });
25. });

26. print_r($set);

27. echo '
    ';
28. $arr[0] = array(1011,1003,1008,1001,1000,1004,1012);
29. $arr[1] = 1009;
30. $arr[2] =array(1011,1003,1111);
31. function m2s($arr){
32. static $new_arr = array();
33. foreach($arr as $k=>$v){
34. if(is_array($v)){
35. m2s($v);

36. }else{

37. $new_arr[]=$v;
38. }
39. }
40. return $new_arr;
41. }
42. $arr_ = m2s($arr);
43. print_r(array_count_values ($arr_));

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