PHP数组序列化键值CodeIgniter缓存
我有表名“首选项”列(键、值) 我在codeigniter中使用缓存 看看这个:PHP数组序列化键值CodeIgniter缓存,php,codeigniter,Php,Codeigniter,我有表名“首选项”列(键、值) 我在codeigniter中使用缓存 看看这个: $pref = $this->ci->db->get('preferences')->result(); $this->ci->cache->save('preferences', $pref, 30000); 保存缓存: (3)s:3:s:3:s:4:4:3:s:3:3:“ttl”i:3万;s:4:“数据”a:87:{i:0;0:0:0:O:8:“stdcclass
$pref = $this->ci->db->get('preferences')->result();
$this->ci->cache->save('preferences', $pref, 30000);
保存缓存:
(3)s:3:s:3:s:4:4:3:s:3:3:“ttl”i:3万;s:4:“数据”a:87:{i:0;0:0:0:O:8:“stdcclass”:2:{s:3:1:3:1:3:3:3:1:{s:1:3:a:a:a:a:1:a:a:a:1:a:a:a:1:a:a:1:a:1:a:a:1:1:a:a:1:1:2::::::,2:2:{s:2:{s:2:{s:2:{s:2:{s:s:s:s:s:s:s:s:s:3:3:3:3:3:3:2:3:3:3:3:3:3:3:3:“关键:3:2:::::
调用缓存使用:
$data = $this->ci->cache->get('preferences');
print_r($data);
输出:
Array(
[0] => Array
(
[key] => site_title
[value] => CARS Big
)
[1] => Array
(
[key] => forum_title
[value] => CARS Big forum
)
[2] => Array
(
[key] => forum_per_page
[value] => 10
)
[3] => Array
(
[key] => forum_section_per_page
[value] => 10
)
[4] => Array
(
[key] => forum_replies_per_page
[value] => 5
)
[5] => Array
(
[key] => forum_can_add_pictures
[value] => 1
)
[6] => Array
(
[key] => forum_can_add_poll
[value] => 1
)
[7] => Array
(
[key] => forum_can_set_time_to_close
[value] => 1
)
[8] => Array
(
[key] => forum_can_set_replies_to_close
[value] => 1
)
[9] => Array
(
[key] => forum_auto_active_topics
[value] => 1
)
[10] => Array
(
[key] => market_title
[value] => market CARS Big
)
[11] => Array
(
[key] => market_per_page
[value] => 5
)
[12] => Array
(
[key] => market_section_per_page
[value] => 3
)
)
如何使列的内容键是键
列值就是内容
这样地:
我需要$data['site_title']来打印:汽车大
以便调用此函数
**您不能,因为缓存保存实现是一个固定的过程。只有在您创建自己的缓存实现时才可以 但是您可以像这样执行返回函数
function pref($key=NULL)
{
// call pref data
$data = $this->ci->cache->get('preferences');
if( ! $data ) {
// cache not present request new
$data = $this->ci->db->get('preferences')->result();
$this->ci->cache->save('preferences', $data, 30000);
}
// loop
foreach( $data as $preferences ) {
if( isset( $preferences['key'] ) && $preferences['key'] == $key ){
return $preferences['value'];
}
}
return false;
}
基本上,您希望循环值并重新分配键,这样类似的事情就可以工作了:
// loop through data
foreach($data as $k=>$v)
{
// unset the original array item to get rid of $data[0], $data[1], $data[2] as so forth
unset($data[$k]);
// $k is a digit (0,1,2,3,4,5,....)
// $v is the array of values so $v['key'] is 'site_title' and $v['value'] is 'CARS Big'
// so essentially we are doing $data['site_title'] = 'CARS Big'; in the line below
$data[$v['key']] = $v['value'];
}
谢谢你的尝试:)它坏了吗?我没有测试它或检查语法错误,哈哈。很高兴你得到了答案!真的,这是个聪明的主意:)很高兴听到它帮助了你:)
function pref($key=NULL)
{
// call pref data
$data = $this->ci->cache->get('preferences');
if( ! $data ) {
// cache not present request new
$data = $this->ci->db->get('preferences')->result();
$this->ci->cache->save('preferences', $data, 30000);
}
// loop
foreach( $data as $preferences ) {
if( isset( $preferences['key'] ) && $preferences['key'] == $key ){
return $preferences['value'];
}
}
return false;
}
// loop through data
foreach($data as $k=>$v)
{
// unset the original array item to get rid of $data[0], $data[1], $data[2] as so forth
unset($data[$k]);
// $k is a digit (0,1,2,3,4,5,....)
// $v is the array of values so $v['key'] is 'site_title' and $v['value'] is 'CARS Big'
// so essentially we are doing $data['site_title'] = 'CARS Big'; in the line below
$data[$v['key']] = $v['value'];
}