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$arr = array('a' , 'b', 'c'); json_encode($arr); 输出: ["a","b","c"]
$arr = array('1' => 'a' , '2' => 'b', '3' => 'c');json_encode($arr); 输出: {"1":"a","2":"b","3":"c"}
如果仍然想转换为数组可使用sort函数排序$arr = array('1' => 'a' , '2' => 'b', '3' => 'c'); sort($arr); json_encode($arr); 输出: ["a","b","c"]
原文链接:https://blog.csdn.net/maisiji_cn/article/details/84338155