Home Backend Development PHP Tutorial Analysis of the advantages of PHP strtok() function_PHP tutorial

Analysis of the advantages of PHP strtok() function_PHP tutorial

Jul 21, 2016 pm 03:40 PM
php strtok advantage function analyze delimiter Can exist Multiple definition yes of

其优点是:

1、可以一次定义多个分隔符。函数在执行时,是按单个分隔符来切割,而不是按整个分隔符,而explode则是按整个分隔串来切割的。正因此,explode可以用中文切割,而strtok则不行,会乱码。

2、在使用while或for配合strtok()遍历时,可以随时更换分隔符,也可以随时用break跳出终止切割。

示例1:演示用中文+explode来切割

$string = "这是PHP论坛 论坛版块 论坛栏目 论坛H管理员 论坛会员";
$arr = explode("论坛",$string);
foreach($arr as $v)
{
echo $v."
";
}
echo "-------------
";

返回:

这是PHP

版块
栏目
H管理员
会员
-------------

示例2:演示更换切割符,注意后面WHILE中不再带有“H”分隔符。而只是用空格。

$string = "这是PHP论坛 论坛版块 论坛栏目 论坛H管理员 论坛会员";
$tok = strtok($string, " H"); //空格+H
$n=1;
while ($tok !== false) {
echo "$tok
";
$tok = strtok(" "); //空格
//if($n>2)break; //可以随时跳出。
//$n++;
}
echo "-------------
";

返回:

这是P
P论坛
论坛版块
论坛栏目
论坛H管理员
论坛会员
-------------

示例3:演示多分隔符。

$string = "This is\tan example\nstring";
$tok = strtok($string, " \n\t"); #空格,换行,TAB
while ($tok !== false) {
echo "$tok
";
$tok = strtok(" \n\t");
}
echo "-------------
";

返回:

This
is
an
example
string
-------------

$string = "abcde 123c4 99sadbc99b5232";
$tok = strtok($string, "bc");
while ($tok !="") {
echo "$tok
";
$tok = strtok("bc");
}
echo "-------------
";

返回:

a
de 123
4 99sad
99
5232
-------------

Example 4: Demonstrates using for to traverse:

$line = "leontatkinsontleon@clearink.com";
for($token = strtok($line,"t");$token!="";$token=strtok("t"))
{
print("token: $token
n");
}

Return:

token: leon
token: atkinson
token: leon@clearink.com

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/321404.htmlTechArticleThe advantages are: 1. Multiple separators can be defined at one time. When the function is executed, it cuts by a single delimiter instead of the entire delimiter, while explode cuts by the entire delimiter string...
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

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

Repo: How To Revive Teammates
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

To work on file upload we are going to use the form helper. Here, is an example for file upload.

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

In this chapter, we are going to learn the following topics related to routing ?

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

CakePHP Creating Validators CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

Validator can be created by adding the following two lines in the controller.

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

See all articles