我试图将一维数组中的值插入到php中的2d矩阵中，将Notice：Array转换为字符串转换

I have an array

我有一个阵列

$re_arr=array("ask","bat","cod","dig","egg","fur","gap","hay","ice","jar","kin","lee","mux","nod","odd","pro","qat","raw","sad","tax","ups","vet","wed","xis","yak");
$re_arr=array("ask",