3.新手尝试php mail发送遇到:Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() in.....
原因:smtp服务器不正确或端口不正确。。我这里用到的是qq邮箱发送。
解决方法:在php.ini 仲设置,并重启。
[mail function]; For Win32 only.SMTP = smtp.qq.com smtp_port = 25; For Win32 only.sendmail_from = PHP_INI_ALL
设置后,开启qq邮箱smtp/pop3服务,
重新测试出现如下问题:SMTP server response: 503 Error: need EHLO and AUTH first !
原因,可能进行了多次恶意登陆,这是由于自己写的php发送邮箱步骤不正确。
在发送邮箱前,需进行登陆握手。
2.试着写几句php 命令遇到:parse error, unexpected T_CONSTANT_ENCAPSED_STRING
原因:词法分析错误,不被期望的字符常量问题。可能是关键字打错,或者{},“”之类的不匹配。
解决方法:在指定的错误行仔细检查一遍。
1.在安装完成后运行PHP测试文件,遇到:403 Forbidden:You don't have permission to access XXX.php/ on this server
原因:文件访问权限
解决办法:打开apache的httpd.conf,找到<Directory />,把整个区块替换成:<Directory /> Options FollowSymLinks AllowOverride None Order allow,deny allow from all ;这里把deny设置为allow.</Directory>保存,重启apache,OK了。

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.

In PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.


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