从现有数组创建另一个多维数组并对多维数组进行排序 [英] create another muti dimentional array from exsisting array and sort a muti dimentional array
问题描述
我对php数组有疑问。我有$ data这样的数组。
i have question about php arrays. i have array like $data.
$data=array(
array('a'='1','b'='2','c'='3','d'='4'), array('a'='5','b'='6','c'='7','d'='8'), array('a'='9','b'='10','c'='11','d'='12')
);
i只想获得a,c,d元素并创建另一个多维数组,如$ data1。
i want to get only a,c,d element and create another multi dimensional array like $data1.
$data1=array(
array('a'='1','c'='3','d'='4'),
array('a'='5','c'='7','d'='8'),
array('a'='9','c'='11','d'='12')
);
下一步我想按d元素的第一个值然后按c元素的值对$ data1数组进行排序最后由一个元素获取数组,如$ data2。
as a next step i wanted to sort $data1 array by first value of d elements then by value of c elements and finally by a elements and get array like $data2.
$data2=array(
array('a'='9','c'='11','d'='12')
array('a'='5','c'='7','d'='8'),
array('a'='1','c'='3','d'='4')
);
我需要对每一步做出一点解释。我在这里遇到了这个问题。我想要帮助..
并且是否有任何php数组函数可以轻松地从$ data获取$ data1数组?
i need little bit explained answer to each step. i''m stuck in here this problem. i want help..
and are there any php array function available for get $data1 array from $data easily?
推荐答案
数据。
data.
data = array(
array('/ span> a' = ' 1' ,' b' = ' 2',' c' = ' 3',' d' = ' 4'),array(' a' = ' 5' 跨度>,' b' = ' < span class =code-string> 6',' c' = ' 7',' d' = ' 8'),数组(' a' = ' 9',' b' = ' 10', c' = ' 11',' d' = ' 12)
);
data=array( array('a'='1','b'='2','c'='3','d'='4'), array('a'='5','b'='6','c'='7','d'='8'), array('a'='9','b'='10','c'='11','d'='12') );
i只想获得a,c,d元素创建另一个多维数组,如
i want to get only a,c,d element and create another multi dimensional array like
data1。
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