php字符串函数str_shuffle,join(php常用数组字符串函数)

打乱字符串顺序

echo str_shuffle("Hello World");

//lolWo drHle

拼接数组为字符串

$arr = 

生成数组

$arr = range(0,5)；

//Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 )

echo join(‘ ’，$arr);

// 1 2 3 4 5