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Homephp教程php手册php中字符查找函数strpos、strrchr与strpbrk用法

这篇文章主要介绍了php中字符查找函数strpos、strrchr与strpbrk用法,以实例形式较为详细的分析了php中字符查找函数strpos、strrchr与strpbrk的具体用法及相关注

本文实例讲述了php中字符查找函数strpos、strrchr与strpbrk用法。分享给大家供大家参考。具体如下:

① strpos() 函数返回字符串在另一个字符串中第一次出现的位置,如果没有找到该字符串,则返回 false.

语法:strpos(string,find,start),代码如下:

复制代码 代码如下:

$str="hello world";          //定义字符串1
$result=strpos($str,"ll");         //执行查找最早出现的位置
echo $result;           //输出结果,,2

② strrchr() 函数查找字符串在另一个字符串中最后一次出现的位置,并返回从该位置到字符串结尾的所有字符,如果成失败,否则返回 false.

语法:strrchr(string,char),代码如下:

复制代码 代码如下:

$str="hello world";          //定义字符串1
$result=strrchr($str,"o");         //执行查找最末出现的位置
echo $result;

③ strpbrk() 函数在字符串中搜索指定字符中的任意一个,该函数返回指定字符第一次出现的位置开始的剩余部分,如果没有找到,则返回 false.

语法:strpbrk(string,charlist),代码如下:

复制代码 代码如下:

$str="hello world";    //定义字符串1
$result=strpbrk($str,"oe");       //执行查找操作
echo $result;     //输出结果,hello world


提示和注释.

注释:该函数对大小写敏感.

希望本文所述对大家的PHP程序设计有所帮助。

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