php基于字符串排序数组

我有这样一个数组：

['ball', 'football', 'volleyball', 'football player', 'football league', 'tennis']

我想基于“football”关键字将其排序为以下内容：

['football', 'football player', 'football league', 'ball', 'volleyball', 'tennis']

我怎样才能做到这一点？

解决方法:

您需要创建自定义排序功能,然后将其与usort一起使用.

$array=["ball","football","volleyball","football player","football league","tennis"];

function footsort($a,$b) {
    $afoot=substr($a,0,8)=="football";
    $bfoot=substr($b,0,8)=="football";
    if ($afoot==$bfoot) return strcmp($a,$b);
    /*else*/ 
    if ($afoot) return -1;
    if ($bfoot) return 1;
}

usort($array,"footsort");

print_r($array);

响应：

Array
(
    [0] => football
    [1] => football league
    [2] => football player
    [3] => ball
    [4] => tennis
    [5] => volleyball
)