php数组函数in_array()查找数组中是否存在指定值

3. $people = array("Peter", "Joe", "Glenn", "Cleveland");

4. if (in_array("Glenn",$people))

5. {
6. echo "Match found";
7. }
8. else
9. {
10. echo "Match not found";
11. }
12. ?>

输出： Match found

例2：

3. $people = array("Peter", "Joe", "Glenn", "Cleveland", 23);

4. if (in_array("23",$people, TRUE))

5. {
6. echo "Match found
   ";
7. }
8. else
9. {
10. echo "Match not found
    ";
11. }if (in_array("Glenn",$people, TRUE))
12. {
13. echo "Match found
    ";
14. }
15. else
16. {
17. echo "Match not found
    ";
18. }if (in_array(23,$people, TRUE))
19. {
20. echo "Match found
    ";
21. }
22. else
23. {
24. echo "Match not found
    ";
25. }
26. ?>

输出： Match not found Match found Match found