99久久精品费精品国产一区二区,av人摸人人人澡人人超碰

Home

php教程

php手冊(cè)

PHP study notes: Enter a sentence and output the words in reverse order

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Sep 26, 2016 am 08:26 AM

Convention: Sentences use spaces as word separators and periods as end symbols.

Implementation ideas:

Use the function explode(separator, string, limit) to split the string, and then split and cut off the symbol from the last member of the obtained data. Use a new array to receive the string in reverse order and add periods.

Code implementation:

<?php<br />/**<br /> * Created by PhpStorm.<br /> * User: Administrator<br /> * Date: 2016/9/25 0025<br /> * Time: 22:29<br /> */<br />//需要被倒序的字符串<br />$str="I am a handsome boy.";<br />$str_len=strlen($str);<br />//echo $str_len;輸出結(jié)果為20，確認(rèn)沒(méi)問(wèn)題。<br />//截取.號(hào)之前的字符substr(string,start,length)<br />$str=substr($str,0,$str_len-1);<br />//echo $str;得出I am a handsome boy，語(yǔ)句沒(méi)問(wèn)題<br />//轉(zhuǎn)為數(shù)組<br />$str_arr=explode(' ',$str);<br />//var_dump($str_arr);結(jié)果無(wú)誤<br />//倒序接收<br />$str_str_new=array_reverse($str_arr);<br />//數(shù)組轉(zhuǎn)為字符串<br />$str_str_new_str=implode(' ',$str_str_new);<br />echo '轉(zhuǎn)換前：'.$str."<br/>".'轉(zhuǎn)換后：'.$str_str_new_str.'.';

Effect:

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