Home> php教程> php手册> body text

php中最简单的字符串匹配算法

WBOY
Release: 2016-06-06 20:15:52
Original
1501 people have browsed it

这篇文章主要介绍了php中最简单的字符串匹配算法,可实现简单的字符串查找与匹配位置显示功能,是比较实用的字符串操作技巧,需要的朋友可以参考下

本文实例讲述了php中最简单的字符串匹配算法。分享给大家供大家参考。具体实现方法如下:

复制代码代码如下:

/*
最简单字符串匹配算法php实现方式

T: ababcabc
P: abc

0. 1. 2.
ababcabc ababcabc ababcabc
||| ||| |||
abc abc abc
(X) (X) (O)

3. 4. 5.
ababcabc ababcabc ababcabc

||| ||| |||

abc abc abc

(X) (X) (O)
*/

$str="ababcabc";
$search="abc";

$strlen=strlen($str);
$searchlen=strlen($search);

//1.遍历$str字符串
for($i=0;$i if($i+$searchlen>$strlen){
echo '超出长度';break;
}

$match=true;


//2.遍历要搜索的字符串$search,进行对比
for($j=0;$j
if($str[$i+$j]!=$search[$j]){
$match=false;
break;
}
$k=$i+$j;
if($match){
if($j==$searchlen-1){
echo "{$str}第{$i}个位置开始为{$search}\n";break;
}
}
}
}
?>

希望本文所述对大家的PHP程序设计有所帮助。

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Recommendations
    Latest Downloads
    More>
    Web Effects
    Website Source Code
    Website Materials
    Front End Template
    About us Disclaimer Sitemap
    php.cn:Public welfare online PHP training,Help PHP learners grow quickly!