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); |
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(); }} |
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。
