


Detailed explanation on how to use JS and PHP keyword search functions
May 31, 2018 pm 02:21 PMThis 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搜索函數(shù),可用于關(guān)鍵字匹配 @param?key?關(guān)鍵字 @param?str?要搜索的字符串 @return?out?匹配關(guān)鍵字前后出現(xiàn)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?=?'你好嗎?你在哪里呀?我可以過來找你玩嗎?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搜索函數(shù),可用于關(guān)鍵字匹配 @param key 關(guān)鍵字 @param str 要搜索的字符串 @return out 匹配關(guān)鍵字前后出現(xiàn)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?=?'你好嗎?你在哪里呀?我可以過來找你玩嗎?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!
Recommended reading:
Detailed explanation of the three usage cases of js (with code)
How to operate JS generation Refers to random numbers and random sequences
The above is the detailed content of Detailed explanation on how to use JS and PHP keyword search functions. For more information, please follow other related articles on the PHP Chinese website!

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