php - PHP将数组随机匹配到自身中

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Using PHP, randomly pair up group of items, not pairing any with itself, no direct pairings
（7个答案）
示例数组：

$player = array("lawrence","joey","jason","joel","bianca","paulo","albert");

我要将数组与自身匹配，以便它从自身获取值而不获取重复值：

"lawrence" => "lawrence"; //must not contain itself
"joey" => "lawrence"; //must not assign value already assigned to that value

简而言之：
就像交换礼物的算法

最佳答案

$player = array("lawrence","joey","jason","joel","bianca","paulo","albert");
shuffle($player);
$player2 = $player;
array_unshift($player2, array_pop($player2));

$combined = array_combine($player, $player2);

洗牌它，把它转1来创建保证唯一的匹配，重新组合。