如何使用codeigniter动态创建数组中的值并将其作为单独的列爆炸 [英] How to explode the values in the array and it as a separate columns by creating it dynamically using codeigniter
问题描述
public function addDynFields()
{
$checkedfileds=$_POST['CheckedFileds'];
$fields=implode(',',$checkedfileds);
$dynflds = strtolower($fields);
$dynclmns = 'add_to'.'_'.$dynflds;
if($fields == 'Title')
{
$this->db->query("ALTER TABLE `pm1asset_dynamic_fields` ADD ".$dynclmns." int(11) NOT NULL");
}
else
{
$this->db->query("ALTER TABLE `pm1asset_dynamic_fields` ADD ".$dynclmns." varchar(255) NOT NULL");
}
}
上面的代码是控制器代码。这里的 $ checkedfileds
是数组形式的多个复选框值。在这里,我想爆炸 $ checkedfileds(Array)
值,并将其存储为表中的单独列。
Here above code is a controller code. Here $checkedfileds
is a multiple check box values in the array form. Here i want to explode the $checkedfileds(Array)
values and store it as a separate columns in a table.
如果我在 $ this-> db->查询中包含
它被创建为一个数组,作为表中的列名,如果我包括<$ c $ $ checkedfileds
( ALTER TABLE pm1asset_dynamic_fields ADD。$ checkedfileds。 varchar(255)NOT NULL); $ this-> db-> query( ALTER TABLE pm1asset_dynamic_fields ADD。$ dynclmns。 varchar(255)NOT NULL)中的c> $ dynclmns
/ code>它创建为add_to_title,但未创建下一列,我不知道为什么不创建它。谁能帮助我。.
If i include $checkedfileds
in $this->db->query("ALTER TABLE pm1asset_dynamic_fields ADD ".$checkedfileds." varchar(255) NOT NULL");
it is created as a Array as a column name in a table, suppose if i include $dynclmns
in $this->db->query("ALTER TABLE pm1asset_dynamic_fields ADD ".$dynclmns." varchar(255) NOT NULL");
it created as a add_to_title but next column is not created, i don't know why it's not going to create. can any one please help me..
推荐答案
尝试修复您的SQL查询语法并修改您的代码,如下所示:
Try to repair your sql query syntax and modify your codes like this :
$checkedfileds = $_POST['CheckedFileds'];
$qry = "ALTER TABLE `pm1asset_dynamic_fields` ";
foreach ($checkedfileds as $key => $value) {
$dynflds = strtolower($value);
$dynclmns = 'add_to' . '_' . $dynflds;
if ($value == 'Title') {
$qry .= "ADD COLUMN `" . $dynclmns . "` int(11) NOT NULL";
} else {
$qry .= "ADD COLUMN `" . $dynclmns . "` varchar(255) NOT NULL";
}
end($checkedfileds);
// use (;) for the last row, otherwise use (,)
if ($key === key($checkedfileds)) {
$qry .= ";";
} else {
$qry .= ", ";
}
}
$this->db->query($qry);
这将生成如下查询:
ALTER TABLE `pm1asset_dynamic_fields`
ADD COLUMN `add_to_title` int(11) NOT NULL,
ADD COLUMN `add_to_col2` varchar(255) NOT NULL,
ADD COLUMN `add_to_col3` varchar(255) NOT NULL;
这篇关于如何使用codeigniter动态创建数组中的值并将其作为单独的列爆炸的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!