PHP Implementation Based on PDO Extension Connection PostgreSQL Object Relational Database Example

This paper gives an example of how PHP connects PostgreSQL object relational database based on PDO extension. Share it for your reference, as follows:

$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 = '.$insertedId);//PostgreSQL Not supported 
    print_r('$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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