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 ------------- |
示例4:演示用for来遍历:
$line = "leon\tatkinson\tleon@clearink.com"; for($token = strtok($line,"\t");$token!="";$token=strtok("\t")) { print("token: $token \n"); } |
返回:
token: leon token: atkinson token: leon@clearink.com |

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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