PHP取整函数的具体使用方法介绍
对于功能强大的ceil -- 进一法取整
说明
float ceil ( float value )
返回不小于 value 的下一个整数,value 如果有小数部分则进一位。ceil() 返回的类型仍然是 float,因为 float 值的范围通常比 integer 要大。
PHP取整函数例子 1. ceil() 例子
<ol class="dp-xml"> <li class="alt"><span><span class="tag"><span> ?php </span></span></span></li> <li><span>echo ceil(4.3); // 5 </span></li> <li class="alt"><span>echo ceil(9.999); // 10 </span></li> <li> <span class="tag">?></span><span> </span> </li> <li class="alt"><span> </span></li> </ol>
floor -- 舍去法取整
说明
float floor ( float value )
返回不大于 value 的下一个整数,将 value 的小数部分舍去取整。floor() 返回的类型仍然是 float,因为 float 值的范围通常比 integer 要大。
PHP取整函数例子 1. floor() 例子
<ol class="dp-xml"> <li class="alt"><span><span class="tag"><span> ?php </span></span></span></li> <li><span>echo floor(4.3); // 4 </span></li> <li class="alt"><span>echo floor(9.999); // 9 </span></li> <li> <span class="tag">?></span><span> </span> </li> <li class="alt"><span> </span></li> </ol>
round -- 对浮点数进行四舍五入
说明
float round ( float val [, int precision] )
返回将 val 根据指定精度 precision(十进制小数点后数字的数目)进行四舍五入的结果。precision 也可以是负数或零(默认值)。
PHP取整函数例子 1. round() 例子
<ol class="dp-xml"> <li class="alt"><span><span class="tag"><span> ?php </span></span></span></li> <li><span>echo round(3.4); // 3 </span></li> <li class="alt"><span>echo round(3.5); // 4 </span></li> <li><span>echo round(3.6); // 4 </span></li> <li class="alt"><span>echo round(3.6, 0); // 4 </span></li> <li><span>echo round(1.95583, 2); // 1.96 </span></li> <li class="alt"><span>echo round(1241757, -3); // 1242000 </span></li> <li><span>echo round(5.045, 2); // 5.05 </span></li> <li class="alt"><span>echo round(5.055, 2); // 5.06 </span></li> <li> <span class="tag">?></span><span> </span> </li> <li class="alt"><span> </span></li> </ol>
intval---对变数转成整数型态
PHP取整函数例子intval()
<ol class="dp-xml"> <li class="alt"><span><span class="tag"><span> ?php </span></span></span></li> <li><span>echo intval(4.3); //4 </span></li> <li class="alt"><span>echo intval(4.6); // 4 </span></li> <li> <span class="tag">?></span><span> </span> </li> <li class="alt"><span> </span></li> </ol>

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

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

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),

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.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

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
