PHP implements file caching function code_PHP tutorial

2. /**
3. * Read or set cache
4. *
5. * @access public
6. * @param string $name Cache name
7. * @param mixed $value cache content, null delete cache
8. * @param string $path cache path
9. * @return mixed
10. */
11. function cache($name, $value = , $path = )
12. {
13. return false; //During debugging phase, no caching is performed
14. $path = empty($path) ? ROOT_PATH . /Runtime/Data/ : $path;
15. $file = $path . $name . .php;
17. if (empty($value)) {
18. //Cache does not exist
19. if (!is_file($file)) {
20. return false;
21. }
23. // Delete cache
24. If (is_null($value)) {
25. unlink($file);
26. return true;
27. }
29. $data = include $file;
30. return $data;
31. }
33. $value = var_export($value, true);
34. $value = "";
35. return file_put_contents($file, $value);
36. }
38. //Function call
39. cache(name, array(a, b, c)); //The write cache name is the cache name, and the following array is the cache content
40. cache(name); //Read the cache
41. cache(name, null); //Delete cache
42. ?>

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