PHP Tutorial
In this tutorial, you will be introduced to PHP from scratch, master the necessary skills for web development, and build your own dynamic website.
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PHP Installation
Unlocking Peak PHP Performance: Configuring OPcache and JIT Compilation
OPcache and JIT are the core tools for PHP8.0 performance optimization. Correct configuration can significantly improve execution efficiency; 1. Enable OPcache and set opcache.enable=1, opcache.memory_consumption=192, opcache.max_accelerated_files=20000, opcache.validate_timestamps=0 to implement opcode caching and reduce parsing overhead; 2. Configure JIT to enable tracking JIT through opcache.jit_buffer_size=256M and opcache.jit=1254
Jul 24, 2025 pm 09:58 PM
Setting Up PHP on macOS
It is recommended to use Homebrew to install PHP, run /bin/bash-c"$(curl-fsSLhttps://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" to install Homebrew, and then execute brewinstallphp or a specified version such as brewinstallphp@8.1; after installation, edit the php.ini file in the corresponding path to adjust memory_limit, upload_max_filesize, post_max_size and display_
Jul 17, 2025 am 04:15 AM
Demystifying PHP Compilation: Building a Custom PHP from Source for Optimal Performance
CompilingPHPfromsourceisnotnecessaryformostprojectsbutprovidesfullcontrolforpeakperformance,minimalbloat,andspecificoptimizations.2.ItinvolvesconvertingPHP’sCsourcecodeintoexecutables,allowingcustomizationlikestrippingunusedextensions,enablingCPU-spe
Jul 25, 2025 am 06:59 AM
Juggling PHP Versions: Managing Multiple Environments with a Single Server
Yes, multiple PHP versions can be run on a single server, and can be implemented in conjunction with Nginx or Apache through PHP-FPM; 1. Install multiple PHP versions of FPM packages (such as php7.4-fpm, php8.3-fpm); 2. Ensure that each FPM service is running normally; 3. Configure server blocks for different sites in Nginx, point to the corresponding PHP-FPM socket through fastcgi_pass; 4. If using Apache, enable mod_proxy_fcgi module and specify FPM sockets through SetHandler in the virtual host; 5. You can switch the CLI default through update-alternatives.
Jul 24, 2025 pm 07:55 PM
Building a Production-Ready PHP Stack on CentOS 9
InstallNginxorApachewithfirewallconfigurationforHTTP/HTTPS.2.InstallPHP8.2 fromtheRemirepositoryandverifyversion.3.ConfigurePHP-FPMwithoptimizedphp.iniandOPcachesettings.4.InstallandsecureMariaDB,thencreateadedicateddatabaseanduser.5.Securethestackus
Jul 25, 2025 am 09:48 AMPHP Syntax
Mastering PHP-FPM and Nginx: A High-Performance Setup Guide
NginxhandlesstaticfilesandroutesdynamicrequeststoPHP-FPM,whichprocessesPHPscriptsviaFastCGI;2.OptimizePHP-FPMbyusingUnixsockets,settingpm=dynamicwithappropriatemax_children,spareservers,andmax_requeststobalanceperformanceandmemory;3.ConfigureNginxwit
Jul 25, 2025 am 05:48 AM
An Introduction to PHP 8 Attributes: Replacing DocBlocks with Structured Metadata
PHP8attributesreplaceDocBlocksformetadatabyprovidingtype-safe,nativelysupportedannotations.1.Attributesaredefinedusing#[Attribute]andcantargetclasses,methods,properties,etc.2.Theyenablecompile-timevalidation,IDEsupport,andbetterperformancebyeliminati
Jul 25, 2025 pm 12:27 PM
Is PHP syntax easy?
Yes,PHPsyntaxiseasy,especiallyforbeginners,becauseitisapproachable,integrateswellwithHTML,andrequiresminimalsetup.Itssyntaxisstraightforward,allowingdirectembeddingintoHTMLwithtags,using$forvariables,semicolonsforstatements,andfamiliarC-stylestructur
Jul 17, 2025 am 04:12 AM
Understanding Variadic Functions and Argument Unpacking in PHP
PHP's variable functions and parameter unpacking is implemented through the splat operator (...). 1. Variable functions use...$params to collect multiple parameters as arrays, which must be at the end of the parameter list and can coexist with the required parameters; 2. Parameter unpacking uses...$array to expand the array into independent parameters and pass it into the function, suitable for numerical index arrays; 3. The two can be used in combination, such as passing parameters in the wrapper function; 4. PHP8 supports matching named parameters when unpacking associative arrays, and it is necessary to ensure that the key name is consistent with the parameter name; 5. Pay attention to avoid using unpacking for non-traversable data, prevent fatal errors, and pay attention to the limit of parameter quantity. These features improve code flexibility and readability, reducing func_get_args() and so on
Jul 25, 2025 am 04:50 AM
Callable Syntax Explained: From String Names to First-Class Callable Objects
PHP supports a variety of callable types, including string function names, static method arrays, instance method arrays, closures, callable objects (__invoke) and higher-order functions simulated by Closure::fromCallable; although the first type of callable syntax such as strlen(...) has not been implemented before PHP 8.3, closures and invokableobjects have effectively supported functional programming styles. It is recommended to select appropriate types based on the scenario and pay attention to scope and security.
Jul 25, 2025 am 10:03 AM
The 'match' Expression: A Superior Alternative to PHP's 'switch' Statement
match eliminates the unexpected fall-through problem of switch, without breaking; 2.match is an expression, which can directly return values, simplifying assignment and inline use; 3.match uses strict comparison by default (===) to avoid accidents caused by implicit type conversion; 4. In PHP8.3, match supports multi-value matching and complex condition judgment; therefore, if you map value to value and run in PHP8, match should be preferred, which is safer, concise and more expressive.
Jul 25, 2025 am 09:27 AM
Leveraging Named Arguments and Constructor Property Promotion in Modern PHP
PHP8.0'snamedargumentsandconstructorpropertypromotionimprovecodeclarityandreduceboilerplate:1.Namedargumentsletyoupassparametersbyname,enhancingreadabilityandallowingflexibleorder;2.Constructorpropertypromotionautomaticallycreatesandassignsproperties
Jul 24, 2025 pm 10:28 PMPHP Comments
Mastering PHP Array Destructuring and the Spread Operator
PHP's array deconstruction and expansion operators can improve code readability and flexibility through concise syntax. 1. Array deconstruction supports extracting values from indexes and associative arrays, such as [$first,$second]=$colors, which can be assigned separately; elements can be skipped through empty placeholders, such as [,,$third]=$colors; associative array deconstruction requires the => matching key, such as ['name'=>$name]=$user, which supports renaming variables and setting default values to deal with missing keys. 2. Expand operator (...) can expand and merge arrays, such as [...$colors,'blue'], which supports majority combination and associative array overwrite, but subsequent keys will overwrite the former and do not replenish.
Jul 25, 2025 am 04:44 AM
Do Comments Slow Down PHP?
PHP ignores the execution overhead of comments, because comments are discarded during the compilation stage and will not enter the opcode execution process; 2. The only negligible performance impact is the microsecond parsing time when the script is first loaded, and there is almost no impact after OPcache is enabled; 3. Priority should be paid to the real performance bottlenecks such as database queries and loops, rather than the number of comments.
Jul 23, 2025 am 04:24 AM
PHP Comments: The Why vs. The What
Priority is given to the use of "why" comments rather than "what to do" comments, because the former provides background or business logic that the code cannot express; 2. Avoid duplication of content that has been clearly expressed by the code, and improve readability by improving variable or function naming; 3. Use PHPDoc block comments to explain the function function function, and keep inline comments focused on explaining the reasons for decision-making, thereby improving code maintainability and saving subsequent development time.
Jul 23, 2025 am 04:17 AM
When to Comment Your PHP Code
Explain non-obvious logic, such as bypassing third-party library bugs or performance optimization; 2. Record complex algorithms or mathematical formulas such as compound interest calculations; 3. Mark to-do items or temporary fixes, use //TODO: or //FIXME; 4. Use useful and concise PHPDoc to explain intention rather than duplicate syntax in public methods - in short, comment when others may be confused "why write this way", otherwise keep the code clean.
Jul 23, 2025 am 04:20 AM
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