关于PHP变量的问题 这样构建数组可以么:db_array = array("aa"=>array("a","b","c"),"bb"=>array("1","1","2")); 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 $db_array = array("aa"=>array("a","b","c"),"bb"=>array("1","1","2"));print_r($db_array);打印:Array ( [aa] => Array ( [0] => a [1] => b [2] => c ) [bb] => Array ( [0] => 1 [1] => 1 [2] => 2 ) ) 模拟数据库数据:$db_array = array("aa"=>array("a","b","c"),"bb"=>array("1","1","2"));模拟where bb=1:$result = array_search(1,$db_array['bb']);模拟输出aa字段:foreach($result as $key) echo $db_array['aa'][$key]; 如果只依赖于原数组 不管怎么查都要遍历整个数组既然需求速度 就生成树形索引吧$index = array( 'aa' => array( 'a' => array(0), 'b' => array(1), 'c' => array(2), ), 'bb' => array( '1' => array(0, 1), '2' => array(2), ),);查到where bb = 1 时 就直接访问$index['bb']['1'],获得符合条件的有0和1,即原数组的key ebay 后台数据本地化管理 小问题求助 请问如何将JavaScript中的变量转换为PHP变量? 帮忙把一段php代码转换成asp代码 求一开源的网店系统 请大家帮忙解决一下,PHP如何判断上传的CSV文件的编码 一个小问题 如何在网站中插入表格 并实现搜索 php自动跳转到Home模块 数组遍历导入mysql的问题请教 php html 分离 php 怎么确定用户已经登录
$db_array = array("aa"=>array("a","b","c"),"bb"=>array("1","1","2"));
print_r($db_array);打印:Array ( [aa] => Array ( [0] => a [1] => b [2] => c ) [bb] => Array ( [0] => 1 [1] => 1 [2] => 2 ) )
$db_array = array("aa"=>array("a","b","c"),"bb"=>array("1","1","2"));
模拟where bb=1:
$result = array_search(1,$db_array['bb']);
模拟输出aa字段:
foreach($result as $key)
echo $db_array['aa'][$key];
既然需求速度 就生成树形索引吧$index = array(
'aa' => array(
'a' => array(0),
'b' => array(1),
'c' => array(2),
),
'bb' => array(
'1' => array(0, 1),
'2' => array(2),
),
);查到where bb = 1 时 就直接访问$index['bb']['1'],获得符合条件的有0和1,即原数组的key