简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
Home > php教程 > php手册 > body text

What do {} braces mean in php_php basics

WBOY
Release： 2016-05-16 08:59:56
Original
2734 people have browsed it

1. {} represents the beginning and end of the program block

For example

Copy code The code is as follows:

if ($x==$y)
{
do_nothing();
}


2. {} is used to represent string subscripts

For example
(quoting the words of the longnetpro brothers)
$s{1} represents the second byte (not the first) of the string $s, which is basically the same as $s[1], except The latter is the old way of writing, the PHP manual recommends the first way of writing www.444p.com All Rights Reserved

3. Separate variables

For example

Copy code The code is as follows:

$s = "Di, ";
echo ("${s}omething");
//Output: Di, something

And if you use echo ("$something");
then it will output $ something is the variable.
Related labels：
big parantheses
source：php.cn
Previous article：Basic knowledge of php study notes Next article：Dynamically modify ini configuration in php_php basics
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
Latest Articles by Author
Latest Issues
My multiply (*) command doesn't calculate My asterisk is not working, when I do the calc() function and do the multiplication notati...
From 2024-04-04 21:18:17
0
1
315
How to find JSON data based on other content in a JSON object when duplicates exist? I'm currently implementing some data charts on a website, and I have a JSON that contains ...
From 2024-04-04 10:57:45
0
1
413
Prettier removed curly brackets "{ }" in .jsx file I have the following code block in my .jsx file: <divclassName=""><h1cl...
From 2024-04-03 17:29:10
0
1
356
Problem: MySQL regular expression (limiter not working) Mod Note: Do Not Remove/Do Not Close I asked this question before and the admins closed it...
From 2024-04-02 23:35:21
0
1
263
How to check width property of CSS class selector? An example is .label{} Here is my comment on the css code, where I chose a width of 270 for the .label: If you in...
From 2024-04-01 17:45:11
0
1
338
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn：Public welfare online PHP training，Help PHP learners grow quickly！