Php checks whether the array is empty for two instances

The following provides the php code for determining whether the array is null. because the array is a composite data type, we cannot process it like other complex data types. let's look at the example below. Method: 1 use count (array

The following provides the php code for determining whether the array is null. because the array is a composite data type, we cannot process it like other complex data types. let's look at the example below.

Method:1. use count (array) to obtain null records. 0 is returned. 2. use the is_null function. the code is as follows:

2. $ A = array ('1', '2', '3 ');
3. Echo count ($ );
4.  
5. If (is_null ($ )){
6. Echo '000 ';
7. } Else {
8. Echo & quot; 1111 & quot ";
9. }
10. ?>

The count method is feasible, but the is_null method is not.

Instance 2,Check whether an array is empty. the code is as follows:

1. /**
2. Array (
3. ); Null
4. Array (
5. Array (
6. ),
7. Array (
8. ),
9. Array (
10. )
11. ); Null
12. Array (
13. Array (
14. ),
15. Array (
16. Array (
17. ),
18. Array (
19. 1 => 1
20. )
21. ),
22. Array (
23. )
24. ); Not empty
25. */
26. Function is_array_null ($ value)
27. {
28. If (emptyempty ($ value ))
29. {
30. Return $ value;
31. }
32. Else
33. {
34. Return is_array ($ value )? Array_map ('Array _ Null', $ value): addslashes ($ value );
35. }
36. }