$str = '[[{"id":"","url":"","title":""xxxxxxxxxxxxxxxxxxxxxxx"","thumb":"","description":"","color":"","size":"14px"}]]';
先需要"title":" 开头 以","thumb" 结尾 替换"xxxxxxxxxxxxxxxxxxxxxxx" 为 "xxxxxxxxxxxxxxxxxxxxxxx" 请大神们指导指导
看看是不是你想要的结果
preg_replace("/title":""(.*)"","thumb/i","title:"\"\1\"","thumb",$str);
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