search
Homephp教程php手册php中最简单的字符串匹配算法

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。

Statement
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

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!