如何实现PHP自动创建数据库？

你做好程序以后，把数据库导出成sql文件

1、连接数据库

2、读取这个sql文件里的sql语句，并执行

3、生成一个数据库连接参数的php文件

<?php

$con = mysql_connect("localhost","peter","abc123");

if (!$con)

{

die('Could not connect: ' . mysql_error());

}

if (mysql_query("CREATE DATABASE my_db",$con))

{

echo "Database created";

}

else

{

echo "Error creating database: " . mysql_error();

}

mysql_close($con);

?>

<?php

class ReadSql {

//数据库连接

protected $connect = null;

//数据库对象

protected $db = null;

//sql文件

public $sqlFile = "";

//sql语句集

public $sqlArr = array();

public function __construct($host, $user, $pw, $db_name) {

$host = empty($host) ? C("DB_HOST") : $host;

$user = empty($user) ? C("DB_USER") : $user;

$pw = empty($pw) ? C("DB_PWD") : $pw;

$db_name = empty($db_name) ? C("DB_NAME") : $db_name;

//连接数据库

$this->connect = mysql_connect($host, $user, $pw) or die("Could not connect: " . mysql_error());

$this->db = mysql_select_db($db_name, $this->connect) or die("Yon can not select the table:" . mysql_error());

}

//导入sql文件

public function Import($url) {

$this->sqlFile = file_get_contents($url);

if (!$this->sqlFile) {

exit("打开文件错误");

} else {

$this->GetSqlArr();

if ($this->Runsql()) {

return true;

}

}

}

//获取sql语句数组

public function GetSqlArr() {

//去除注释

$str = $this->sqlFile;

$str = preg_replace('/--.*/i', '', $str);

$str = preg_replace('/\/\*.*\*\/(\;)?/i', '', $str);

//去除空格 创建数组

$str = explode(";\n", $str);

foreach ($str as $v) {

$v = trim($v);

if (empty($v)) {

continue;

} else {

$this->sqlArr[] = $v;

}

}

}

//执行sql文件

public function RunSql() {

foreach ($this->sqlArr as $k => $v) {

if (!mysql_query($v)) {

exit("sql语句错误：第" . $k . "行" . mysql_error());

}

}

return true;

}

}

//范例：

header("Content-type:text/html;charset=utf-8");

$sql = new ReadSql("localhost", "root", "", "log_db");

$rst = $sql->Import("./log_db.sql");

if ($rst) {

echo "Success！";

}

?>