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字符串匹配问题:求大神指导。

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Release: 2016-06-23 13:34:15
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$a="1,2,3,4,5"
$b="1,2,3,4,6"
$c="1,2,4,5,6"
$d="2,3,4,5,6"
$f="7,8,9,10,11"
如何判断出$b,$c,$d,$f和$a的相似度呢?然后,判断出他们的百分比。


回复讨论(解决方案)

快来帮帮忙啊

前提:
1.都能以,拆分
2.拆分后的数量必须相同
3.不进行顺序比较

function similarity($a,$b){	$a_arr=explode(',',$a);	$b_arr=explode(',',$b);	$num=count(array_intersect($a_arr,$b_arr));	$count=count($a_arr);	return ($num/$count*100).'%';}$a="1,2,3,4,5";$b="1,2,3,4,6";$c="1,2,4,5,6";$d="2,3,4,5,6";$f="7,8,9,10,11";echo similarity($a,$b).'<br>';echo similarity($a,$c).'<br>';echo similarity($a,$d).'<br>';echo similarity($a,$f).'<br>';
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谢谢啦,昨天晚上我也找到这个函数了。

php自带一个类似的,我想从数据库中提取用户的选择然后分别对其他用户匹配。嘿嘿

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