php排除雷同的字符留一个

php排除相同的字符留一个

$a = "'你好','你好啊','他好','他好啊','我好','我好啊','他好啊','我好'";

怎么$a里以,为分隔，把里面相同的排除掉一个

麻烦知道的大哥直接给完整代码

'你好','你好啊','他好','他好啊','我好','我好啊','他好啊','我好'

就是把绿色和红色部分相同的取其中一个，有时会出现3个，4个，5个相同的但都取一个
'你好','你好啊','他好','他好啊','我好','我好啊','他好啊','我好','他好啊','我好','我好'

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------解决办法--------------------

$b=join(',' , array_unique(explode(",",$a)));

Related labels：

array explode join nbsp unique

source：php.cn

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