今天在处理删除字符串两端的特定字符时遇到了下面的问题,先看例子 $str = 'akmumu/writedb.json'; 我要做的是删除开始的akmumu,再删除末尾的.json,这样只保留有用的字符/writedb 开始我使用的ltrim删除akmumu,再使用rtrim删除.json 结果发现我理解trim错
今天在处理删除字符串两端的特定字符时遇到了下面的问题,先看例子
$str = 'akmumu/writedb.json';
我要做的是删除开始的akmumu,再删除末尾的.json,这样只保留有用的字符/writedb
开始我使用的ltrim删除akmumu,再使用rtrim删除.json
结果发现我理解trim错误了,trim的参数如下
rtrim(string,charlist)
他的参数时charlist,也就是不一定按照顺序查找,比如我给一个
$str = 'akmumu/writedbsojn.json';
结果还是/write,我想要的/writedbsojn没有出现,也就是说只要charlist中的任意字符匹配就一直这么下去了。。。
所以就用别的了
str_replace,substr_replace即可
安全起见,增加了代码,防止再截取错误
if(strpos($str,'akmumu/') !== FALSE $str = substr($str,7); if(strpos($str,'.json') !== FALSE) { if(substr($str,-5,5) == '.json') { $str = substr_replace($str,'',-5); } } }
这样就可以了

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

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

Hot Article

Hot Tools

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Zend Studio 13.0.1
Powerful PHP integrated development environment

SublimeText3 Mac version
God-level code editing software (SublimeText3)

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool