This time I will bring you JS and php keywordsSearchFunctionDetailed explanation of usage, what are the precautionswhen using JS and php keyword search functions , the following is a practical case, let’s take a look.
a. Code:
/* @desc:js搜索函数,可用于关键字匹配 @param key 关键字 @param str 要搜索的字符串 @return out 匹配关键字前后出现的位置 */ function search(key,str){ var min = 0 var max = str.length var index = str.indexOf(key) var left = index - 10 var right = index + 10 if(left<min){ left = min } if(right>max){ right = max } var out = str.slice(left,right) return out }
b. Test:
var str = '你好吗?你在哪里呀?我可以过来找你玩吗?你怎么不回答我呀!' var key = '玩' var res = search(key,str) console.log(res)
c. Output:
? Can I come over and play with you? Why don't you answer me
php:
a. Code:
<?php /* @desc:php搜索函数,可用于关键字匹配 @param key 关键字 @param str 要搜索的字符串 @return out 匹配关键字前后出现的位置 */ function search($key,$str){ $min = 0; $max = mb_strlen($str); $index = mb_strpos($str,$key); $left = $index - 10; $right = $index + 10; if($left<$min){ $left = $min; } if($right>$max){ $right = $max; } $len = $right - $left; $out = mb_substr($str,$left,$len); return $out; }
b. Test:
$str = '你好吗?你在哪里呀?我可以过来找你玩吗?你怎么不回答我呀!'; $key = '玩'; $res = search($key,$str); echo $res;
c. Output: Where is
? Can I come over and play with you? Why don't you answer me
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
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Detailed explanation of the three usage cases of js (with code)
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