本文实例讲述了PHP实现基于PDO扩展连接PostgreSQL对象关系数据库的方法。分享给大家供大家参考，具体如下：
$pdo = NULL;
if(version_compare(PHP_VERSION, '5.3.6', '<')){
$pdo = new \PDO('pgsql:host=127.0.0.1;port=5432;dbname=postgredb1','postgres',"123456",array(\PDO::MYSQL_ATTR_INIT_COMMAND=>'SET NAMES \'UTF8\'' ));
}
else{
$pdo = new \PDO('pgsql:host=127.0.0.1;port=5432;dbname=postgredb1','postgres',"123456");
}
try {
$pdo->beginTransaction();
$tableName = 'user';
if($fetch = true){
$myPDOStatement = $pdo->prepare("SELECT * FROM " . $tableName . " WHERE id=:id ");
if(!$myPDOStatement) {
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
$id = 1;
$myPDOStatement->bindParam(":id",$id);
$myPDOStatement->execute();
if($myPDOStatement->errorCode()>0){
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
$item = $myPDOStatement->fetch();
print_r($item);
}
$insertedId = 0;
if($insert = true){
$myPDOStatement = $pdo->prepare("INSERT INTO " . $tableName . "(username,password,status) VALUES(:username,:password,:status)");
if(!$myPDOStatement) {
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
$timestamp = time();
$data = array(
'username' =>'usernamex',
'password' =>'passwordx',
'status' =>'1',
);
$myPDOStatement->bindParam(":username",$data['username']);
$myPDOStatement->bindParam(":password",$data['password']);
$myPDOStatement->bindParam(":status",$data['status']);
$myPDOStatement->execute();
if($myPDOStatement->errorCode()>0){
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
$affectRowCount = $myPDOStatement->rowCount();
if($affectRowCount>0){
$insertedId = $pdo->lastInsertId();
}
print_r('$insertedId = '.$insertedId);//PostgreSQL不支持
print_r('$affectRowCount = '.$affectRowCount);
}
if($update = true){
$myPDOStatement = $pdo->prepare("UPDATE " . $tableName . " SET username=:username, status=:status WHERE id=:id");
if(!$myPDOStatement) {
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
$id = 1;
$username = 'username update';
$status = 0;
$myPDOStatement->bindParam(":id",$id);
$myPDOStatement->bindParam(":username",$username);
$myPDOStatement->bindParam(":status",$status);
$myPDOStatement->execute();
if($myPDOStatement->errorCode()>0){
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
$affectRowCount = $myPDOStatement->rowCount();
print_r('$affectRowCount = '.$affectRowCount);
}
if($fetchAll = true){
$myPDOStatement = $pdo->prepare("SELECT * FROM " . $tableName ." WHERE id > :id");
if(!$myPDOStatement) {
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
$id = 0;
$myPDOStatement->bindParam(":id",$id);
$myPDOStatement->execute();
if($myPDOStatement->errorCode()>0){
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
$list = $myPDOStatement->fetchAll();
print_r($list);
}
if($update = true){
$myPDOStatement = $pdo->prepare("DELETE FROM " . $tableName . " WHERE id=:id");
if(!$myPDOStatement) {
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
//$insertedId = 10;
$myPDOStatement->bindParam(":id",$insertedId);
$myPDOStatement->execute();
if($myPDOStatement->errorCode()>0){
$errorInfo = $myPDOStatement->errorInfo();
throw new \Exception($errorInfo[0].'###'.$errorInfo[1].'###'.$errorInfo[2]);
}
$affectRowCount = $myPDOStatement->rowCount();
print_r('$affectRowCount = '.$affectRowCount);
}
$pdo->commit();
} catch (\Exception $e) {
$pdo->rollBack();
// print_r($e);
}
$pdo = null;
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