给数组排序的问题,wellcome
如何按数组单元中某位置所含的数字顺序给该数组排序?如:
$arr[0] = "xxxxxx<!-- 1 -->xxx";
$arr[1] = "xxxx<!-- 6 -->xxxxx";
$arr[2] = "xxxx<!-- 8 -->xxxxxx";
$arr[3] = "xxxxxx<!-- 5 -->xxxxx";
$arr[4] = "xxxxx<!-- 6 -->xxxxx"; //并可能与上面数字有重复
$arr[5] = "xxxxx<!-- 2 -->xxxx";
...
让输出变成:
"xxxxxx<!-- 1 -->xxx"
"xxxxx<!-- 2 -->xxxx"
"xxxxxx<!-- 5 -->xxxxx"
"xxxx<!-- 6 -->xxxxx"
"xxxxx<!-- 6 -->xxxxx"
"xxxx<!-- 8 -->xxxxx"
...