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Signed-off-by: j502647092 <jtb1@163.com>
2025-11-24 21:26:09 +00:00 · 2015-11-01 22:25:03 +08:00
commit 2003fda7cb
409 changed files with 77938 additions and 0 deletions
--- a/ThinkPHP/Library/Think/Cache/Driver/Sqlite.class.php
+++ b/ThinkPHP/Library/Think/Cache/Driver/Sqlite.class.php
@@ -0,0 +1,119 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+namespace Think\Cache\Driver;
+use Think\Cache;
+defined('THINK_PATH') or exit();
+/**
+ * Sqlite缓存驱动
+ */
+class Sqlite extends Cache {
+
+    /**
+     * 架构函数
+     * @param array $options 缓存参数
+     * @access public
+     */
+    public function __construct($options=array()) {
+        if ( !extension_loaded('sqlite') ) {
+            E(L('_NOT_SUPPORT_').':sqlite');
+        }
+        if(empty($options)) {
+            $options = array (
+                'db'        =>  ':memory:',
+                'table'     =>  'sharedmemory',
+            );
+        }
+        $this->options  =   $options;      
+        $this->options['prefix']    =   isset($options['prefix'])?  $options['prefix']  :   C('DATA_CACHE_PREFIX');
+        $this->options['length']    =   isset($options['length'])?  $options['length']  :   0;        
+        $this->options['expire']    =   isset($options['expire'])?  $options['expire']  :   C('DATA_CACHE_TIME');
+        
+        $func = $this->options['persistent'] ? 'sqlite_popen' : 'sqlite_open';
+        $this->handler      = $func($this->options['db']);
+    }
+
+    /**
+     * 读取缓存
+     * @access public
+     * @param string $name 缓存变量名
+     * @return mixed
+     */
+    public function get($name) {
+        N('cache_read',1);
+		$name   = $this->options['prefix'].sqlite_escape_string($name);
+        $sql    = 'SELECT value FROM '.$this->options['table'].' WHERE var=\''.$name.'\' AND (expire=0 OR expire >'.time().') LIMIT 1';
+        $result = sqlite_query($this->handler, $sql);
+        if (sqlite_num_rows($result)) {
+            $content   =  sqlite_fetch_single($result);
+            if(C('DATA_CACHE_COMPRESS') && function_exists('gzcompress')) {
+                //启用数据压缩
+                $content   =   gzuncompress($content);
+            }
+            return unserialize($content);
+        }
+        return false;
+    }
+
+    /**
+     * 写入缓存
+     * @access public
+     * @param string $name 缓存变量名
+     * @param mixed $value  存储数据
+     * @param integer $expire  有效时间（秒）
+     * @return boolean
+     */
+    public function set($name, $value,$expire=null) {
+        N('cache_write',1);
+        $name  = $this->options['prefix'].sqlite_escape_string($name);
+        $value = sqlite_escape_string(serialize($value));
+        if(is_null($expire)) {
+            $expire  =  $this->options['expire'];
+        }
+        $expire	=	($expire==0)?0: (time()+$expire) ;//缓存有效期为0表示永久缓存
+        if( C('DATA_CACHE_COMPRESS') && function_exists('gzcompress')) {
+            //数据压缩
+            $value   =   gzcompress($value,3);
+        }
+        $sql  = 'REPLACE INTO '.$this->options['table'].' (var, value,expire) VALUES (\''.$name.'\', \''.$value.'\', \''.$expire.'\')';
+        if(sqlite_query($this->handler, $sql)){
+            if($this->options['length']>0) {
+                // 记录缓存队列
+                $this->queue($name);
+            }
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * 删除缓存
+     * @access public
+     * @param string $name 缓存变量名
+     * @return boolean
+     */
+    public function rm($name) {
+        $name  = $this->options['prefix'].sqlite_escape_string($name);
+        $sql  = 'DELETE FROM '.$this->options['table'].' WHERE var=\''.$name.'\'';
+        sqlite_query($this->handler, $sql);
+        return true;
+    }
+
+    /**
+     * 清除缓存
+     * @access public
+     * @return boolean
+     */
+    public function clear() {
+        $sql  = 'DELETE FROM '.$this->options['table'];
+        sqlite_query($this->handler, $sql);
+        return ;
+    }
+}