php foreach 为key,每两个数字为一组
<?php
$data=array('1','2','3','4','5','6','7','8','9','10','11');
foreach($data as $key=> $element){
if($key % 2 != 0){
echo $element.'<br />';
}
echo '<hr />';
}
?>
php foreach 作为key,如何让每两个数字为一组?
php foreach as key, how to make every two number as a group?
我要输出:
1,2
_____
3,4
_____
5,6
_____
7,8
_____
9,10
_____
11
推荐答案
查看 array_chunk()
函数.
Have a look at the array_chunk()
function.
在你的情况下,你会像这样使用它:
In your case you'd use it like this:
foreach(array_chunk($data, 2) as $values) {
echo implode(',', $values)."
";
}
在最后一次迭代中 $values
将只有一个元素,所以如果你打算使用它们的索引直接访问元素,请记住使用 count()
来检查数组的元素计数.
During the last iteration $values
will have only one element so if you plan to access the elements directly using their index remember to use count()
to check the array's element count.
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