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：
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INSERT INTO tbl_name (a,b,c) VALUES(1,2,3),(4,5,6),(7,8,9);
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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）：
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<?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();
}
}
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使用方法是通过add方法逐个加入数据，然后调用execute执行。
希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。