PHP基础操作类库

lxMiniPHP.php

<?php
/*!
 * PHP基础操作类库
 *
 * @author 老雷 <leizongmin@qq.com>
 * @date 2012-08-23 12:43:45
 */


/**
 * MySQL 数据库操作
 */
class SQL {
  /**
   * 连接到数据库
   * 成功返回true, 失败返回false
   *
   * @param {string} $server
   * @param {string} $username
   * @param {string} $password
   * @param {string} $database
   * @return {bool}
   */
  public static function connect ($server = 'localhost:3306', $username = 'root', $password = '', $database = '') {
    mysql_connect($server, $username, $password);
    $r = mysql_select_db($database);
    // 设置默认字符集为utf-8
    SQL::update('set names utf8');
    return $r;
  }
  
  /**
   * 获取出错信息
   * 返回数据格式：  {id:出错ID, error:出错描述}
   *
   * @return {array}
   */
  public static function error () {
    return array(
      'id'  =>  mysql_errno(),
      'error' =>  mysql_error()
      );
  }

  /**
   * 返回出错代码
   *
   * @return {int}
   */
  public static function errno () {
    return mysql_errno();
  }

  /**
   * 返回出错描述信息
   *
   * @return {string}
   */
  public static function errmsg () {
    return mysql_error();
  }
  
  /**
   * 查询并返回所有数据
   * 格式为： [{字段名:值, 字段名:值 ...}, ...]，返回FALSE表示失败
   *
   * @param {string} $sql
   * @return {array}
   */
  public static function getAll ($sql) {
    $r = mysql_query($sql);
    if (mysql_errno()) {
      return FALSE;
    }
    $data = array();
    while ($row = mysql_fetch_array($r, MYSQL_ASSOC)) {
      $data[] = $row;
    }
    if (count($data) < 1)
      return FALSE;
    else
      return $data;
  }
  public static function getData ($sql) {
    return SQL::getAll($sql);
  }
  
  /**
   * 查询并返回一行数据 格式为 {字段名:值, 字段名:值 ...}，返回FALSE表示失败
   *
   * @param {string} $sql
   * @return {array}
   */
  public static function getOne ($sql) {
    $sql .= ' LIMIT 1';
    $data = SQL::getAll($sql);
    if ($data == FALSE)
      return FALSE;
    else
      return $data[0];
  }
  public static function getLine ($sql) {
    return SQL::getOne($sql);
  }
  
  /**
   * 执行SQL命令 返回影响的记录行数
   *
   * @param {string} $sql
   * @return {int}
   */
  public static function update ($sql) {
    mysql_query($sql);
    return mysql_affected_rows();
  }
  public static function runSql ($sql) {
    return SQL::runSql($sql);
  }
  
  /**
   * 取最后插入ID
   *
   * @return {int}
   */
  public static function id () {
    return mysql_insert_id();
  }
  public static function lastId () {
    return SQL::id();
  }
  
  /**
   * 转换为SQL安全字符串
   *
   * @param {string} $str
   * @return {string}
   */
  public static function escape ($str) {
    return  mysql_escape_string($str);
  }
}

/**
 * 调试信息流操作
 */
class DEBUG {
  public static $stack = '';
  
  /**
   * 添加到DEBUG流
   *
   * @param {string} $msg
   * @param {string} $title
   */
  public static function put ($msg = '', $title = '') {
    if (!empty($title)) {
      $msg = '['.$title.'] '.$msg;
    }
    DEBUG::$stack .= $msg."\r\n";
  }
  
  /**
   * 获取DEBUG流
   *
   * @return {string}
   */
  public static function get () {
    return DEBUG::$stack;
  }
  
  /**
   * 清空DEBUG流，并返回之前的信息
   *
   * @return {string}
   */
  public static function clear () {
    $ret = DEBUG::$stack;
    DEBUG::$stack = '';
    return $ret;
  }
}

/**
 * 上传文件管理
 */
class UPLOAD {
  /**
   * 获取上传文件
   * 返回格式：{name: 名称, type: 文件MIME类型, size: 大小, tmp_name: 临时文件名}
   *
   * @param {string} $filename
   * @return {array}
   */
  public static function get ($filename) {
    if (isset($_FILES[$filename])) {
      $uploaded_file = array(
        'name' => $_FILES[$filename]['name'],
        'type' => $_FILES[$filename]['type'],
        'size' => $_FILES[$filename]['size'],
        'tmp_name' => $_FILES[$filename]['tmp_name']
        );
    } elseif (isset($_POST[$filename])) {
      $uploaded_file = array(
        'name' => $_POST[$filename],
        );
    } elseif (isset($GLOBALS['HTTP_POST_FILES'][$filename])) {
      global $HTTP_POST_FILES;
      $uploaded_file = array(
        'name' => $HTTP_POST_FILES[$filename]['name'],
        'type' => $HTTP_POST_FILES[$filename]['type'],
        'size' => $HTTP_POST_FILES[$filename]['size'],
        'tmp_name' => $HTTP_POST_FILES[$filename]['tmp_name']
        );
    } elseif (isset($GLOBALS['HTTP_POST_VARS'][$filename])) {
      global $HTTP_POST_VARS;
      $uploaded_file = array(
        'name' => $HTTP_POST_VARS[$filename],
        );
    } else {
      $uploaded_file = array(
        'name' => $GLOBALS[$filename . '_name'],
        'type' => $GLOBALS[$filename . '_type'],
        'size' => $GLOBALS[$filename . '_size'],
        'tmp_name' => $GLOBALS[$filename]
      );
    }
    return $uploaded_file;
  }

  /**
   * 移动临时文件
   *
   * @param {array} $file
   * @param {string} $target
   * @return {string}
   */
  public static function move ($file, $target) {
    if (substr($target, -1) != '/') $target .= '/';
    $target .= $file['name'];
    move_uploaded_file($file['tmp_name'], $target);
    return $target;
  }
}

/**
 * 调试输出
 *
 * @param {mixed} $var
 */
function dump ($var) {
  echo '<pre>';
  print_r($var);
  echo '</pre>';
}