Comments cannot be careless because they want to explain the reasons for the existence of the code rather than the functions, such as compatibility with old interfaces or third-party restrictions, otherwise people who read the code can only rely on guessing. The areas that must be commented include complex conditional judgments, special error handling logic, and temporary bypass restrictions. A more practical way to write comments is to select single-line comments or block comments based on the scene. Use document block comments to explain parameters and return values at the beginning of functions, classes, and files, and keep comments updated. For complex logic, you can add a line to the previous one to summarize the overall intention. At the same time, do not use comments to seal code, but use version control tools.

The key to writing good comments is to explain "why" rather than just "what was done" to improve the readability of the code. 1. Comments should explain logical reasons, such as considerations behind value selection or processing; 2. Use paragraph annotations for complex logic to summarize the overall idea of functions or algorithms; 3. Regularly maintain comments to ensure consistency with the code, avoid misleading, and delete outdated content if necessary; 4. Synchronously check comments when reviewing the code, and record public logic through documents to reduce the burden of code comments.

The key to setting up PHP is to clarify the installation method, configure php.ini, connect to the web server and enable necessary extensions. 1. Install PHP: Use apt for Linux, Homebrew for Mac, and XAMPP recommended for Windows; 2. Configure php.ini: Adjust error reports, upload restrictions, etc. and restart the server; 3. Use web server: Apache uses mod_php, Nginx uses PHP-FPM; 4. Install commonly used extensions: such as mysqli, json, mbstring, etc. to support full functions.

To adjust the PHP configuration of WAMPServer, you must first find the path of the php.ini file currently used, click the WAMP icon in the system tray, and hover over "PHP" and "php.ini" to display the correct position. Secondly, if you need to upload a large file, set upload_max_filesize and post_max_size to 64M, and restart Apache to take effect. Third, turn on display_errors=On and error_reporting=E_ALL in the debugging phase, change it to Off before going online and enable logging. Fourth, enable common extensions such as mysqli, curl, gd, mbstring and xm

PHPblockcommentsareusefulforwritingmulti-lineexplanations,temporarilydisablingcode,andgeneratingdocumentation.Theyshouldnotbenestedorleftunclosed.BlockcommentshelpindocumentingfunctionswithPHPDoc,whichtoolslikePhpStormuseforauto-completionanderrorche

PHPprovidestwomainwaystowritecomments:single-lineandmultiline,withthelatterbeingidealforlongerexplanationsordocumentation-stylenotesusingthe//syntax.Usemultilinecommentswhenwritingdetaileddescriptions(morethan2–3lines),documentingfunctionsorfileheade

To make Apache support PHP, you need to install PHP and its Apache module. The steps are as follows: 1. Install PHP: sudoaptinstallphp; 2. Install Apache's PHP module: sudoaptinstalllibapache2-mod-php; 3. If the module is not automatically enabled, manually execute a2enmodphp; 4. Restart Apache: sudosystemctlrestartapache2. Make sure that AllowOverrideAll is in the site configuration and set DirectoryIndex to include index.php. Create a phpinfo() page during testing to verify whether it is

TolearnPHPeffectively,startbysettingupalocalserverenvironmentusingtoolslikeXAMPPandacodeeditorlikeVSCode.1)InstallXAMPPforApache,MySQL,andPHP.2)Useacodeeditorforsyntaxsupport.3)TestyoursetupwithasimplePHPfile.Next,learnPHPbasicsincludingvariables,ech