PHP分裂阵列成组基于一个字段的值 [英] PHP splitting arrays into groups based on one field's value
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问题描述
我有一个包含姓名和其他细节的数组的数组,按字母顺序排列。每个阵列包括与名称相关联的第一个字母。
I have an array containing arrays of names and other details, in alphabetical order. Each array includes the first letter associated with the name.
Array
(
[0] => Array
(
[0] => a
[1] => Alanis Morissette
)
[1] => Array
(
[0] => a
[1] => Alesha Dixon
)
[2] => Array
(
[0] => a
[1] => Alexandra Burke
)
[3] => Array
(
[0] => b
[1] => Britney Spears
)
[4] => Array
(
[0] => b
[1] => Bryan Adams
)
)
我想显示它们由首字母组合,如:
I'd like to display them grouped by that first initial, eg:
A
-
Alanis Morissette
Alesha Dixon
Alexandra Burke
B
-
Britney Spears
Bryan Adams
etc...
这是在所有可能的?
Is this at all possible?
推荐答案
您可以将它们很容易,即使他们没有排序:
You can group them easily, even if they aren't sorted:
$groups=array();
foreach ($names as $name) {
$groups[$name[0]][] = $name[1];
}
您甚至不需要到第一个初始存储组他们:
You don't even need to store the first initial to group them:
$names = array(
'Alanis Morissette',
'Alesha Dixon',
'Alexandra Burke',
'Britney Spears',
'Bryan Adams',
...
);
$groups=array();
foreach ($names as $name) {
$groups[$name[0]][] = $name;
}
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