廢話不多說了，具體代碼如下所示：

<?php
class mysql {
private $db_host; //數(shù)據(jù)庫主機(jī)
private $db_user; //數(shù)據(jù)庫用戶名
private $db_pwd; //數(shù)據(jù)庫用戶名密碼
private $db_database; //數(shù)據(jù)庫名
private $conn; //數(shù)據(jù)庫連接標(biāo)識;
private $result; //執(zhí)行query命令的結(jié)果資源標(biāo)識
private $sql; //sql執(zhí)行語句
private $row; //返回的條目數(shù)
private $coding; //數(shù)據(jù)庫編碼，GBK,UTF8,gb2312
private $bulletin = true; //是否開啟錯誤記錄
private $show_error = false; //測試階段，顯示所有錯誤,具有安全隱患,默認(rèn)關(guān)閉
private $is_error = false; //發(fā)現(xiàn)錯誤是否立即終止,默認(rèn)true,建議不啟用，因?yàn)楫?dāng)有問題時用戶什么也看不到是很苦惱的
/*構(gòu)造函數(shù)*/
public function __construct($db_host, $db_user, $db_pwd, $db_database, $conn, $coding) {
$this->db_host = $db_host;
$this->db_user = $db_user;
$this->db_pwd = $db_pwd;
$this->db_database = $db_database;
$this->conn = $conn;
$this->coding = $coding;
$this->connect();
}
/*數(shù)據(jù)庫連接*/
public function connect() {
if ($this->conn == "pconn") {
//永久鏈接
$this->conn = mysql_pconnect($this->db_host, $this->db_user, $this->db_pwd);
} else {
//即使鏈接
$this->conn = mysql_connect($this->db_host, $this->db_user, $this->db_pwd);
}
if (!mysql_select_db($this->db_database, $this->conn)) {
if ($this->show_error) {
$this->show_error("數(shù)據(jù)庫不可用：", $this->db_database);
}
}
mysql_query("SET NAMES $this->coding");
}
/*數(shù)據(jù)庫執(zhí)行語句，可執(zhí)行查詢添加修改刪除等任何sql語句*/
public function query($sql) {
if ($sql == "") {
$this->show_error("SQL語句錯誤：", "SQL查詢語句為空");
}
$this->sql = $sql;
$result = mysql_query($this->sql, $this->conn);
if (!$result) {
//調(diào)試中使用，sql語句出錯時會自動打印出來
if ($this->show_error) {
$this->show_error("錯誤SQL語句：", $this->sql);
}
} else {
$this->result = $result;
}
return $this->result;
}
/*創(chuàng)建添加新的數(shù)據(jù)庫*/
public function create_database($database_name) {
$database = $database_name;
$sqlDatabase = &#39;create database &#39; . $database;
$this->query($sqlDatabase);
}
/*查詢服務(wù)器所有數(shù)據(jù)庫*/
//將系統(tǒng)數(shù)據(jù)庫與用戶數(shù)據(jù)庫分開，更直觀的顯示？
public function show_databases() {
$this->query("show databases");
echo "現(xiàn)有數(shù)據(jù)庫：" . $amount = $this->db_num_rows($rs);
echo "<br />";
$i = 1;
while ($row = $this->fetch_array($rs)) {
echo "$i $row[Database]";
echo "<br />";
$i++;
}
}
//以數(shù)組形式返回主機(jī)中所有數(shù)據(jù)庫名
public function databases() {
$rsPtr = mysql_list_dbs($this->conn);
$i = 0;
$cnt = mysql_num_rows($rsPtr);
while ($i < $cnt) {
$rs[] = mysql_db_name($rsPtr, $i);
$i++;
}
return $rs;
}
/*查詢數(shù)據(jù)庫下所有的表*/
public function show_tables($database_name) {
$this->query("show tables");
echo "現(xiàn)有數(shù)據(jù)庫：" . $amount = $this->db_num_rows($rs);
echo "<br />";
$i = 1;
while ($row = $this->fetch_array($rs)) {
$columnName = "Tables_in_" . $database_name;
echo "$i $row[$columnName]";
echo "<br />";
$i++;
}
}
/*
mysql_fetch_row() array $row[0],$row[1],$row[2]
mysql_fetch_array() array $row[0] 或 $row[id]
mysql_fetch_assoc() array 用$row->content 字段大小寫敏感
mysql_fetch_object() object 用$row[id],$row[content] 字段大小寫敏感
*/
/*取得結(jié)果數(shù)據(jù)*/
public function mysql_result_li() {
return mysql_result($str);
}
/*取得記錄集,獲取數(shù)組-索引和關(guān)聯(lián),使用$row[&#39;content&#39;] */
public function fetch_array($resultt="") {
if($resultt<>""){
return mysql_fetch_array($resultt);
}else{
return mysql_fetch_array($this->result);
}
}
//獲取關(guān)聯(lián)數(shù)組,使用$row[&#39;字段名&#39;]
public function fetch_assoc() {
return mysql_fetch_assoc($this->result);
}
//獲取數(shù)字索引數(shù)組,使用$row[0],$row[1],$row[2]
public function fetch_row() {
return mysql_fetch_row($this->result);
}
//獲取對象數(shù)組,使用$row->content
public function fetch_Object() {
return mysql_fetch_object($this->result);
}
//簡化查詢select
public function findall($table) {
$this->query("SELECT * FROM $table");
}
//簡化查詢select
public function select($table, $columnName = "*", $condition = &#39;&#39;, $debug = &#39;&#39;) {
$condition = $condition ? &#39; Where &#39; . $condition : NULL;
if ($debug) {
echo "SELECT $columnName FROM $table $condition";
} else {
$this->query("SELECT $columnName FROM $table $condition");
}
}
//簡化刪除del
public function delete($table, $condition, $url = &#39;&#39;) {
if ($this->query("DELETE FROM $table WHERE $condition")) {
if (!empty ($url))
$this->Get_admin_msg($url, &#39;刪除成功！&#39;);
}
}
//簡化插入insert
public function insert($table, $columnName, $value, $url = &#39;&#39;) {
if ($this->query("INSERT INTO $table ($columnName) VALUES ($value)")) {
if (!empty ($url))
$this->Get_admin_msg($url, &#39;添加成功！&#39;);
}
}
//簡化修改update
public function update($table, $mod_content, $condition, $url = &#39;&#39;) {
//echo "UPDATE $table SET $mod_content WHERE $condition"; exit();
if ($this->query("UPDATE $table SET $mod_content WHERE $condition")) {
if (!empty ($url))
$this->Get_admin_msg($url);
}
}
/*取得上一步 INSERT 操作產(chǎn)生的 ID*/
public function insert_id() {
return mysql_insert_id();
}
//指向確定的一條數(shù)據(jù)記錄
public function db_data_seek($id) {
if ($id > 0) {
$id = $id -1;
}
if (!@ mysql_data_seek($this->result, $id)) {
$this->show_error("SQL語句有誤：", "指定的數(shù)據(jù)為空");
}
return $this->result;
}
// 根據(jù)select查詢結(jié)果計(jì)算結(jié)果集條數(shù)
public function db_num_rows() {
if ($this->result == null) {
if ($this->show_error) {
$this->show_error("SQL語句錯誤", "暫時為空，沒有任何內(nèi)容！");
}
} else {
return mysql_num_rows($this->result);
}
}
// 根據(jù)insert,update,delete執(zhí)行結(jié)果取得影響行數(shù)
public function db_affected_rows() {
return mysql_affected_rows();
}
//輸出顯示sql語句
public function show_error($message = "", $sql = "") {
if (!$sql) {
echo "<font color=&#39;red&#39;>" . $message . "</font>";
echo "<br />";
} else {
echo "<fieldset>";
echo "<legend>錯誤信息提示:</legend><br />";
echo "<div style=&#39;font-size:14px; clear:both; font-family:Verdana, Arial, Helvetica, sans-serif;&#39;>";
echo "<div style=&#39;height:20px; background:#000000; border:1px #000000 solid&#39;>";
echo "<font color=&#39;white&#39;>錯誤號：12142</font>";
echo "</div><br />";
echo "錯誤原因：" . mysql_error() . "<br /><br />";
echo "<div style=&#39;height:20px; background:#FF0000; border:1px #FF0000 solid&#39;>";
echo "<font color=&#39;white&#39;>" . $message . "</font>";
echo "</div>";
echo "<font color=&#39;red&#39;><pre class="brush:php;toolbar:false">" . $sql . "