如何利用PHP执行.SQL文件

/**
* 读取 sql 文件并写入数据库
* @version 1.01 demo.php
*/
class DBManager
{
var $dbHost = '';
var $dbUser = '';
var $dbPassword = '';
var $dbSchema = ''; function __construct($host,$user,$password,$schema)
{
$this->dbHost = $host;
$this->dbUser = $user;
$this->dbPassword = $password;
$this->dbSchema = $schema;
} function createFromFile($sqlPath,$delimiter = '(;/n)|((;/r/n))|(;/r)',$prefix = '',$commenter = array('#','--'))
{
//判断文件是否存在
if(!file_exists($sqlPath))
return false; $handle = fopen($sqlPath,'rb'); $sqlStr = fread($handle,filesize($sqlPath)); //通过sql语法的语句分割符进行分割
$segment = explode(";",trim($sqlStr)); //var_dump($segment); //去掉注释和多余的空行
foreach($segment as & $statement)
{
$sentence = explode("/n",$statement); $newStatement = array(); foreach($sentence as $subSentence)
{
if('' != trim($subSentence))
{
//判断是会否是注释
$isComment = false;
foreach($commenter as $comer)
{
if(eregi("^(".$comer.")",trim($subSentence)))
{
$isComment = true;
break;
}
}
//如果不是注释，则认为是sql语句
if(!$isComment)
$newStatement[] = $subSentence;
}
} $statement = $newStatement;
}
//对表名加前缀
if('' != $prefix)
{
//只有表名在第一行出现时才有效 例如 CREATE TABLE talbeName $regxTable = "^[/`/'/"]{0,1}[/_a-zA-Z]+[/_a-zA-Z0-9]*[/`/'/"]{0,1}$";//处理表名的正则表达式
$regxLeftWall = "^[/`/'/"]{1}"; $sqlFlagTree = array(
"CREATE" => array(
"TABLE" => array(
"$regxTable" => 0
)
),
"INSERT" => array(
"INTO" => array(
"$regxTable" => 0
)
) ); foreach($segment as & $statement)
{
$tokens = split(" ",$statement[0]); $tableName = array();
$this->findTableName($sqlFlagTree,$tokens,$tableName); if(empty($tableName['leftWall']))
{
$newTableName = $prefix.$tableName['name'];
}
else{
$newTableName = $tableName['leftWall'].$prefix.substr($tableName['name'],1);
} $statement[0] = str_replace($tableName['name'],$newTableName,$statement[0]);
} }
//组合sql语句
foreach($segment as & $statement)
{
$newStmt = '';
foreach($statement as $sentence)
{
$newStmt = $newStmt.trim($sentence)."/n";
} $statement = $newStmt;
} //用于测试------------------------
//var_dump($segment);
//writeArrayToFile('data.txt',$segment);
//------------------------------- self::saveByQuery($segment); return true;
} private function saveByQuery($sqlArray)
{
$conn = mysql_connect($this->dbHost,$this->dbUser,$this->dbPassword); mysql_select_db($this->dbSchema); foreach($sqlArray as $sql)
{
mysql_query($sql);
}
mysql_close($conn);
} private function findTableName($sqlFlagTree,$tokensKey=0,& $tableName = array())
{
$regxLeftWall = "^[/`/'/"]{1}"; if(count($tokens)<=$tokensKey)
return false; if('' == trim($tokens[$tokensKey]))
{
return self::findTableName($sqlFlagTree,$tokensKey+1,$tableName);
}
else
{
foreach($sqlFlagTree as $flag => $v)
{
if(eregi($flag,$tokens[$tokensKey]))
{
if(0==$v)
{
$tableName['name'] = $tokens[$tokensKey]; if(eregi($regxLeftWall,$tableName['name']))
{
$tableName['leftWall'] = $tableName['name']{0};
} return true;
}
else{
return self::findTableName($v,& $tableName);
}
}
}
} return false;
}
}
function writeArrayToFile($fileName,$dataArray,$delimiter="/r/n")
{
$handle=fopen($fileName,"wb"); $text = ''; foreach($dataArray as $data)
{
$text = $text.$data.$delimiter;
}
fwrite($handle,$text);
}
//测试
$dbM = new DBManager('localhost','w01f','123456','test');
$dbM->createFromFile('data.sql',null,'fff_');
?>