php中的getop是用于接收cmd参数的时候用的
例如当你再linxu 中 需要用php调试的时候,往往需要带参数调试
getopt就是可以实现带参数传入的命令
使用方式:
array getopt ( string $options [, array $longopts ] )
注意: $options字符串中的每个字符将被用来作为选项字符和对传递给脚本用一个连字符开始匹配选项( - )。例如,一个选项字符“x”对应一个选项-x。只有a - z,A - Z和0-9是允许的 空格是不能作为选项字符的。
note: 包含当运行于命令行下时传递给当前脚本的参数的数组。
Note: 这个变量仅在 register_argc_argv 打开时可用。
例1: 首先认识一下php变量 $argv
<?php var_dump($argv);?>
使用命令: php script.php arg1 arg2 arg3
则会输出以下内容:
array(4) { [0]=> string(10) "script.php" [1]=> string(4) "arg1" [2]=> string(4) "arg2" [3]=> string(4) "arg3"}
例2: getopt 简单示例
<?php $options = getopt("f:hp:"); var_dump($options);?>
使用命令: php script.php -f value -h 或者 php script.php -fvalue -h
则会输出一下内容:
array(2) { ["f"]=> string(5) "value" ["h"]=> bool(false)}
例3:getopt
<?php$shortopts = "";$shortopts .= "f:"; // Required value$shortopts .= "v::"; // Optional value$shortopts .= "abc"; // These options do not accept values$longopts = array( "required:", // Required value "optional::", // Optional value "option", // No value "opt", // No value);$options = getopt($shortopts, $longopts);var_dump($options);?>php script.php -f "value for f" -v -a --required value --optional="optional value" --option will output:
输出:
array(6) { ["f"]=> string(11) "value for f" ["v"]=> bool(false) ["a"]=> bool(false) ["required"]=> string(5) "value" ["optional"]=> string(14) "optional value" ["option"]=> bool(false)}

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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