概念混乱啊，PHP是一种编程语言，不是文件。
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表是数据库中的对象，通常应该通过数据库管理系统来建立表，然后通过编程语言做出的程序访问表中的数据，而不是动态建立表格。
首先你把这个sql语句赋给一个字符串变量：
$sql="CREATE TABLE IF NOT EXISTS `{$installer-getTable('catalog_category_description')}` (
`category_id` mediumint(8) unsigned NOT NULL,
`language_id` smallint(5) unsigned NOT NULL,
`name` varchar(128) NOT NULL,
`description` text NOT NULL,
`meta_title` varchar(128) NOT NULL,
`meta_description` text NOT NULL,
`meta_keyword` varchar(255) NOT NULL,
PRIMARY KEY (`category_id`,`language_id`),
KEY `i_language_id` (`language_id`),
CONSTRAINT `fk_category_id` FOREIGN KEY (`category_id`) REFERENCES `{$installer-getTable('catalog_category')}` (`id`) ON DELETE CASCADE,
CONSTRAINT `fk_language_id` FOREIGN KEY (`language_id`) REFERENCES `{$installer-getTable('locale_language')}` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC";
然后连接mysql数据库，执行这个语句：
mysql_connect("localhost","root","");
mysql_select_db("dbname");
mysql_query($sql);
就可以了。
注意连接数据库帐号的权限要有创建表的权限，否则创建就不会成功！
if(!is_writable('config.php')){
emMsg('配置文件(config.php)不可写。如果您使用的是Unix/Linux主机，请修改该文件的权限为777。如果您使用的是Windows主机，请联系管理员，将此文件设为可写');
}
if(!is_writable(EMLOG_ROOT.'/content/cache')){
emMsg('缓存文件不可写。如果您使用的是Unix/Linux主机，请修改缓存目录 (content/cache) 下所有文件的权限为777。如果您使用的是Windows主机，请联系管理员，将该目录下所有文件设为可写');
}
$config = "?php\n"
."//mysql database address\n"
."define('DB_HOST','$db_host');"
."\n//mysql database user\n"
."define('DB_USER','$db_user');"
."\n//database password\n"
."define('DB_PASSWD','$db_pw');"
."\n//database name\n"
."define('DB_NAME','$db_name');"
."\n//database prefix\n"
."define('DB_PREFIX','$db_prefix');"
."\n//auth key\n"
."define('AUTH_KEY','".getRandStr(32).md5($_SERVER['HTTP_USER_AGENT'])."');"
."\n//cookie name\n"
."define('AUTH_COOKIE_NAME','EM_AUTHCOOKIE_".getRandStr(32,false)."');"
."\n";
$fp = @fopen('config.php', 'w');
$fw = @fwrite($fp, $config);
if (!$fw){
emMsg('配置文件(config.php)不可写。如果您使用的是Unix/Linux主机，请修改该文件的权限为777。如果您使用的是Windows主机，请联系管理员，将此文件设为可写');
}
fclose($fp);
//密码加密存储
$PHPASS = new PasswordHash(8, true);
$adminpw = $PHPASS-HashPassword($adminpw);
$dbcharset = 'utf8';
$type = 'MYISAM';
$table_charset_sql = $DB-getMysqlVersion() '4.1' ? 'ENGINE='.$type.' DEFAULT CHARSET='.$dbcharset.';' : 'ENGINE='.$type.';';
if ($DB-getMysqlVersion() '4.1' ){
$DB-query("ALTER DATABASE `{$db_name}` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;", true);
}
$widgets = Option::getWidgetTitle();
$sider_wg = Option::getDefWidget();
$widget_title = serialize($widgets);
$widgets = serialize($sider_wg);
define('BLOG_URL', getBlogUrl());
$sql = "
DROP TABLE IF EXISTS {$db_prefix}blog;
CREATE TABLE {$db_prefix}blog (
gid int(10) unsigned NOT NULL auto_increment,
title varchar(255) NOT NULL default '',
date bigint(20) NOT NULL,
content longtext NOT NULL,
excerpt longtext NOT NULL,
alias VARCHAR(200) NOT NULL DEFAULT '',
author int(10) NOT NULL default '1',
sortid int(10) NOT NULL default '-1',
type varchar(20) NOT NULL default 'blog',
views int(10) unsigned NOT NULL default '0',
comnum int(10) unsigned NOT NULL default '0',
attnum int(10) unsigned NOT NULL default '0',
top enum('n','y') NOT NULL default 'n',
sortop enum('n','y') NOT NULL default 'n',
hide enum('n','y') NOT NULL default 'n',
checked enum('n','y') NOT NULL default 'y',
allow_remark enum('n','y') NOT NULL default 'y',
password varchar(255) NOT NULL default '',
template varchar(255) NOT NULL default '',
PRIMARY KEY (gid),
KEY date (date),
KEY author (author),
KEY sortid (sortid),
KEY type (type),
KEY views (views),
KEY comnum (comnum),
KEY hide (hide)
)".$table_charset_sql."
INSERT INTO {$db_prefix}blog (gid,title,date,content,excerpt,author,views,comnum,attnum,top,sortop,hide,allow_remark,password) VALUES (1, '欢迎使用emlog', '".time()."', '恭喜您成功安装了emlog，这是系统自动生成的演示文章。编辑或者删除它，然后开始您的创作吧！', '', 1, 0, 0, 0, 'n', 'n', 'n', 'y', '');
DROP TABLE IF EXISTS {$db_prefix}attachment;
CREATE TABLE {$db_prefix}attachment (
aid int(10) unsigned NOT NULL auto_increment,
blogid int(10) unsigned NOT NULL default '0',
filename varchar(255) NOT NULL default '',
filesize int(10) NOT NULL default '0',
filepath varchar(255) NOT NULL default '',
addtime bigint(20) NOT NULL default '0',
width int(10) NOT NULL default '0',
height int(10) NOT NULL default '0',
mimetype varchar(40) NOT NULL default '',
thumfor int(10) NOT NULL default 0,
PRIMARY KEY (aid),
KEY blogid (blogid)
)".$table_charset_sql."
DROP TABLE IF EXISTS {$db_prefix}comment;
CREATE TABLE {$db_prefix}comment (
cid int(10) unsigned NOT NULL auto_increment,
gid int(10) unsigned NOT NULL default '0',
pid int(10) unsigned NOT NULL default '0',
date bigint(20) NOT NULL,
poster varchar(20) NOT NULL default '',
comment text NOT NULL,
mail varchar(60) NOT NULL default '',
url varchar(75) NOT NULL default '',
ip varchar(128) NOT NULL default '',
hide enum('n','y') NOT NULL default 'n',
PRIMARY KEY (cid),
KEY gid (gid),
KEY date (date),
KEY hide (hide)
)".$table_charset_sql."
DROP TABLE IF EXISTS {$db_prefix}options;
CREATE TABLE {$db_prefix}options (
option_id INT( 11 ) UNSIGNED NOT NULL auto_increment,
option_name VARCHAR( 255 ) NOT NULL ,
option_value LONGTEXT NOT NULL ,
PRIMARY KEY (option_id),
KEY option_name (option_name)
)".$table_charset_sql."
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('blogname','点滴记忆');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('bloginfo','使用emlog搭建的站点');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('site_title','');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('site_description','');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('site_key','emlog');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('log_title_style','0');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('blogurl','".BLOG_URL."');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('icp','');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('footer_info','');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('admin_perpage_num','15');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('rss_output_num','0');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('rss_output_fulltext','y');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('index_lognum','10');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('index_comnum','10');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('index_twnum','10');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('index_newtwnum','5');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('index_newlognum','5');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('index_randlognum','5');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('index_hotlognum','5');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('comment_subnum','20');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('nonce_templet','default');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('admin_style','default');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('tpl_sidenum','1');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('comment_code','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('comment_needchinese','y');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('comment_interval',60);
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('isgravatar','y');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('isthumbnail','y');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('att_maxsize','20480');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('att_type','rar,zip,gif,jpg,jpeg,png,txt,pdf,docx,doc,xls,xlsx');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('att_imgmaxw','420');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('att_imgmaxh','460');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('comment_paging','y');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('comment_pnum','10');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('comment_order','newer');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('login_code','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('reply_code','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('iscomment','y');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('ischkcomment','y');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('ischkreply','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('isurlrewrite','0');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('isalias','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('isalias_html','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('isgzipenable','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('isxmlrpcenable','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('ismobile','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('isexcerpt','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('excerpt_subnum','300');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('istwitter','y');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('istreply','n');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('topimg','content/templates/default/images/top/default.jpg');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('custom_topimgs','a:0:{}');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('timezone','8');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('active_plugins','');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('widget_title','$widget_title');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('custom_widget','a:0:{}');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('widgets1','$widgets');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('widgets2','');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('widgets3','');
INSERT INTO {$db_prefix}options (option_name, option_value) VALUES ('widgets4','');
?php$server = "localhost";
$username = "root";
$password = "";
$database = "myabc";
$ranks = array(
1="newbie",
2="new member",
3="member",
4="high member",
5="very high member",
6="supreme member",
7="ultra member",
8="godlike member",
9="god member",
10="low god",
11="medium god",
12="high god",
13="very high god",
14="supreme god",
15="ultra god",
16="perfect");$couldNotOpenDatabase = "Could not open databaseBR\n please check your settings in config.php";
$couldNotConnectMysql="Could not connect Mysql!";
$conn=mysql_connect($server,$username,$password) or die ($couldNotConnectMysql);
if (mysql_select_db($database,$conn))
{//数据库存在，做相应操作}else{//数据库不存在，创建一个，并做相应操作
创建数据库：create database 数据库名
创建数据表：
CREATE TABLE `users` (
`id` tinyint(10) auto_increment primary key NOT NULL,
`username` varchar(30) NOT NULL,
`age` int(10) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
执行这两个sql语句就行
建立数据表，得是你在cmd窗口或者phpmyadmin、navicat for mysql这类终端软件里进行操作。建立数据表的指令是create table xxx ();
连接数据库使用php封装好的一个函数mysql_connect();
例如：
mysql_connect('127.0.0.1','root','root');
这样的语句来连接，因为连接数据库会生成连接标识资源，你把这个资源赋给一个新变量
$active_connection_sort = mysql_connect('127.0.0.1','root','root');
这样你拿着新变量去玩别的也好下手。
括号中间都是参数，第一个是连接地址，比如localhost，但我个人建议还是127.0.0.1省得还得来一步解析，第二个参数是用户名，第三个参数是密码，都用英文单括号括上。参数和参数之间用英文逗号间隔起来。
用框架做久了这个东西都容易忘，我也是凭记忆写的，你试试看这个能不能过关。
