// 数组转字符串,用","分隔
$array = array('a', 's', 'd');
$new_array = implode(",", $array);
// 字符串转数组
$array = "a,s,d";
$new_array = explode(",", $array );
PHP字符串和数组的互相转化
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转载自blog.csdn.net/weixin_46304253/article/details/108529408
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