Yii框架批量插入数据扩展类的简单实现方法

本文实例讲述了Yii框架批量插入数据扩展类的简单实现方法。分享给大家供大家参考，具体

本文实例讲述了Yii框架批量插入数据扩展类的简单实现方法。分享给大家供大家参考，具体如下：

MySQL INSERT语句允许插入多行数据，如下所示：

INSERT INTO tbl_name (a,b,c) VALUES(1,2,3),(4,5,6),(7,8,9);

那么要实现批量插入，主要的任务就是按照列顺序，把数据组装成上述格式即可，可以使用sprintf和vsprintf函数来实现。

下面是一个实现批量插入的Yii扩展类的简单示例（支持VARCHAR类型数据）：

<?php
/**
 * class for sql batch insert
 */
class CDbBICommand extends CDbCommand{
 /** @var CActiveRecord $class */
 private $class;
 /** @var string $insert_tpl */
 private $insert_tpl = "insert into %s(%s) ";
 /** @var string $value_tpl */
 private $value_tpl = "(%s)";
 /** @var string $query */
 public $query;
 /** @var CDbColumnSchema[] $columns */
 private $columns;
 /** @var boolean $fresh */
 private $fresh;
 /** @param CActiveRecord $class
 * @param CDbConnection $db
 */
 public function __construct($class,$db){
 $this->class = $class;
 $this->createtpl();
 parent::_construct($db);
 }
 private function createtpl(){
 $this->fresh = true;
 $value_tpl = "";
 $columns_string = "";
 $this->columns = $this->class->getMetaData()->tableSchema->columns;
 $counter = 0;
 foreach($this->columns as $column){
 /** @var CDbColumnSchema $column */
 if($column->autoIncrement){
 $value_tpl .= "0";
 }else{
 $value_tpl .= "\"%s\"";
 }
 $columns_string .= $column->name;
 $counter ++;
 if($counter != sizeof($this->columns)){
 $columns_string .= ", ";
 $value_tpl .= ", ";
 }
 }
 $this->insert_tpl = sprintf($this->insert_tpl, $this->class->tableName(), $columns_string);
 $this->value_tpl = sprintf($this->value_tpl, $value_tpl);
 }
 /**
 * @param CActiveRecord $record
 */
 public function add($record){
 $values = array();
 $i = 0;
 foreach($this->columns as $column){
 if($column->autoIncrement){
 continue;
 }
 $values[$i] = $this->class->{$column->name};
 $i ++;
 }
 if(!$this->fresh){
 $this->query .= ",";
 }else{
 $this->query = "values";
 }
 $this->fresh = false;
 $this->query .= vsprintf($this->value_tpl, $values);
 return true;
 }
 public function execute(){
 $this->setText($this->insert_tpl." ".$this->query);
 return parent::execute();
 }
}

使用方法是通过add方法逐个加入数据，然后调用execute执行。

Yii框架 批量插入 数据 扩展类