home-school-contact-app/文档/服务器/ezSQL/mysql/disk_cache_example.php

54 lines
1.2 KiB
PHP

<?php
// Standard ezSQL Libs
include_once "../shared/ez_sql_core.php";
include_once "ez_sql_mysql.php";
// Initialise singleton
$db = new ezSQL_mysql('db_user', 'db_pass', 'db_name');
// Cache expiry
$db->cache_timeout = 24; // Note: this is hours
// Specify a cache dir. Path is taken from calling script
$db->cache_dir = 'ezsql_cache';
// (1. You must create this dir. first!)
// (2. Might need to do chmod 775)
// Global override setting to turn disc caching off
// (but not on)
$db->use_disk_cache = true;
// By wrapping up queries you can ensure that the default
// is NOT to cache unless specified
$db->cache_queries = true;
// At last.. a query!
$db->get_results("SHOW TABLES");
$db->debug();
// Select * from use
$db->get_results("SELECT * FROM User");
$db->debug();
// This ensures only the above querys are cached
$db->cache_queries = false;
// This query is NOT cached
$db->get_results("SELECT * FROM User LIMIT 0,1");
$db->debug();
/*
Of course, if you want to cache EVERYTHING just do..
$db = new ezSQL_mysql('db_user', 'db_pass', 'db_name');
$db->use_disk_cache = true;
$db->cache_queries = true;
$db->cache_timeout = 24;
*/
?>