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Both Swoole and RoadRunner can break through the concurrency bottleneck of PHP-FPM. Swoole provides high-performance asynchronous processing through C extension, which is suitable for real-time applications; 1. RoadRunner is written in Go without PHP extension, suitable for seamless acceleration of traditional frameworks such as Laravel/Symfony; 2. The choice depends on performance requirements, deployment environment and team technology stack, both of which significantly improve high concurrency capabilities, and the specific selection should be based on actual scenarios.
Aug 04, 2025 pm 04:09 PM![Performance Analysis: The `[]` Operator vs. `array_push` for Appending Elements](https://img.php.cn/upload/article/001/253/068/175429482123140.jpg?x-oss-process=image/resize,m_fill,h_135,w_420)
The[]operatorisfasterthanarray_pushforsingle-elementappendsduetoloweroverhead,asitisalanguageconstructhandleddirectlybythePHPengine.2.array_pushismorepracticalforaddingmultipleelementsatonce,offeringcleanersyntaxwhenusingmultipleargumentsorthesplatop
Aug 04, 2025 pm 04:07 PM
TocheckApacheconfigurationforsyntaxerrorswithoutrestarting,usetheapachectlconfigtestcommand.1.Runsudoapachectlconfigtesttotestsyntax.2.Errorslikemissingtagsin,typosindirectives,incorrectpaths,ormisconfigured.htaccessrulesarereported.3.OnDebian/Ubuntu
Aug 04, 2025 pm 04:01 PM
$GLOBALS and global are both used to access global variables in functions, but there are key differences: 1.$GLOBALS is a hyperglobal array that accesses variables through key names, such as $GLOBALS['var'], while global is a language structure, and global $var needs to be declared; 2.$GLOBALS does not require pre-declaration and can be used directly, global must be declared first and then used; 3.$GLOBALS supports dynamic access, such as $GLOBALS[$varName], global does not support dynamic declaration; 4.unset($GLOBALS['var']) will delete the global variable itself, while unset($var) is in global$v
Aug 04, 2025 pm 03:59 PM
Use return instead of break to search or verify in functions. 1. When the purpose of the loop is to find the result and exit immediately, use return to avoid flag variables and additional logic; 2. Return can reduce cognitive burden, eliminate unnecessary iterations, avoid temporary variables, and make sure that the function has been completed; 3. However, break should be retained when continuing to execute after a non-function environment, processing nested loops or multi-step cumulative results; 4. During reconstruction, the loop can be moved into an independent function, and the result is found, that is, return, and if it does not match, it will return, thereby improving the readability and simplicity of the code.
Aug 04, 2025 pm 03:49 PM
Use the correct encoding format and input method to correctly handle special characters in Notepad. 1. Select UTF-8 encoding when saving the file to support more characters; 2. Use the Alt key plus the numeric keypad to enter special symbols, such as Alt 0169 as ?; 3. You can copy and paste special characters from the web page or character map table; 4. Pay attention to the hidden control characters in the file that may cause abnormal display.
Aug 04, 2025 pm 03:45 PM
NamedcapturegroupsinPHPprovideaclearandmaintainablewaytoextractmatchedtextbyassigningmeaningfulnamesinsteadofrelyingonnumericindices.1.Use(?pattern)or('name'pattern)syntaxtodefinenamedgroupsinPCRE.2.Inpreg_match,capturedgroupsareaccessiblevia$matches
Aug 04, 2025 pm 03:44 PM
InternalfunctionsinPHParefasterthanuser-definedonesbecausetheyarewritteninCandcompiledintotheZendEngine,bypassinginterpretationoverhead.1.Whencallinganinternalfunctionlikestrlen(),PHPperformsafunctiontablelookup,parsesparametersviazend_parse_paramete
Aug 04, 2025 pm 03:42 PM
The CHECK constraint in MySQL8.0 does not really work because it parses but ignores the constraint; 1. It retains CHECK for compatibility and future extensions; 2. CHECK can be used as a document description; 3. Alternative methods include using triggers, application layer verification and stored procedures; 4. When using it, be careful not to rely on it for data verification. Multiple CHECK constraints are invalid, and migration scripts require additional processing, and some tools may prompt that they do not support it.
Aug 04, 2025 pm 03:35 PM
Switchcanbeslightlyfasterthanif-elseif-elsewhencomparingonevariableagainstmanyscalarvaluesduetopossiblejumptableoptimization,buttheperformancedifferenceisnegligibleinmostreal-worldcases,especiallywithfewerthan10conditions.2.Useswitchwhenperformingmul
Aug 04, 2025 pm 03:34 PM
Foreach only accesses public attributes when traversing objects in PHP; 2. Protected and private attributes are not visible, even if you use foreach($thisas...) inside the class; 3. To customize the traversal behavior, you can implement the Iterator or IteratorAggregate interface; 4. To check the properties that include private and protected, you need to use the Reflection class; 5.get_object_vars() also only returns the public attributes under the current scope. Therefore, foreach's behavior is the embodiment of PHP encapsulation characteristics, and non-public attributes will not be traversed.
Aug 04, 2025 pm 03:22 PM
Bun is a full-stack JavaScript toolchain designed to replace Node.js, npm, Webpack and other tools. 1. It provides ultra-fast TypeScript/JS runtime, cold start is 3 to 5 times faster than Node.js and natively supports TS; 2. Built-in package manager buninstall, parsing package.json and download dependencies are 5 to 10 times faster than npm, and uses binary lock file bun.lockb to improve efficiency; 3. Integrated packaging function bunbuild, supports tree-shaking, compression and multiple output formats, and can replace Webpack or Vite; 4. Built-in test runner buntest, fast startup
Aug 04, 2025 pm 03:17 PM
Using break's numerical parameters can break out of multi-layer nested loops and avoid using flag variables; for example, break2 can directly exit the two-layer loop, improving code readability and maintenance, and is suitable for scenarios where execution is terminated based on condition in multi-layer loops.
Aug 04, 2025 pm 03:16 PM
Array deconstruction is a function of extracting values from arrays and assigning them to variables in PHP7.1 and above through list() or [] syntax. 1. It can be used for indexing and associating array value extraction; 2. Support skipping elements and setting default values to enhance robustness; 3. Applicable to scenarios such as multiple return values of functions, traversing key-value pairs and variable exchange; 4. Pay attention to array structure matching and avoiding excessive deconstruction to maintain readability; this feature improves the simplicity and maintainability of the code, making PHP closer to modern programming practices.
Aug 04, 2025 pm 03:11 PM
TypeScriptcatchesbugsearlywithtypesafetybyidentifyingerrorsatcompiletimeinsteadofruntime.2.Itenhancesdeveloperexperiencewithsuperiortoolinglikeintelligentautocompletion,inlinedocumentation,andsaferefactoring.3.Itimprovesteamcollaborationandcodemainte
Aug 04, 2025 pm 03:08 PM
A distributed transaction is a set of operations performed between multiple databases or servers, ensuring that all operations are either successful or fail. Its core is to ensure cross-system data consistency and rely on MSDTC service coordination. The steps to enable: 1. Ensure the server accesses MSDTC; 2. Open the firewall port; 3. Set up the linked server to enable distributed transactions; 4. Use the BEGINDISTRIBUTEDTRANSACTION command. Common problems include timeout deadlock, DTC configuration errors, and performance degradation. Solutions include reducing transaction operations, checking network configuration, and avoiding unnecessary queries and connection pool interference. Whether to use it depends on the scene. High consistency across systems is suitable for use. Otherwise, local transactions or asynchronous operations are recommended.
Aug 04, 2025 pm 02:59 PM
When encountering the "InvalidValueforRegistry" error, a key value in the Windows registry is usually set to an unsupported or illegal format. It can be solved through the following steps: 1. Find the registry key that is problematic, locate it in the registry editor according to the path in the error prompt and check whether the value is wrong; 2. Check the recently installed or uninstalled software, try to uninstall the software that may cause problems or use the system restore; 3. Use the system file inspection tool to repair the system files through the administrator command prompt; 4. Carefully modify or delete the illegal registry value, back up the registry or create a system restore point before operation, and ensure that the correct data type is entered.
Aug 04, 2025 pm 02:54 PM
ThekeytomasteringLinuxnetworkingliesinunderstandingsixcoreareas:1.NetworkinterfacesandIPconfigurationusingcommandslikeipaddr,iplink,andiproute,withpersistentsettingsviadistribution-specificfilessuchas/etc/sysconfig/network-scripts/ifcfg-eth0orNetplan
Aug 04, 2025 pm 02:52 PM
JavaScriptenhancesparallaxscrollingbyenablingprecisecontroloverscrollspeed,scroll-basedtriggers,independentlayeranimation,andbettermobilesupportcomparedtoCSSalone;1.Usetransform:translateY()withdata-speedattributestomovebackgroundlayersatdifferentspe
Aug 04, 2025 pm 02:47 PM
The accuracy of database statistics directly affects the optimization effect of SQL query plan. Statistics are metadata about the distribution of tables and index data, including the number of rows, the number of different values, data distribution and index selectivity, etc., for the optimizer to estimate the cost of execution paths and select the optimal plan. Inaccurate statistical information will lead to problems such as misselecting the full table scan, unused indexes, improper parallel planning, and unreasonable association order. Maintenance methods include: 1. Regular update of statistical information; 2. Pay attention to high-frequency query columns; 3. Avoid over-update; 4. Use sampling to reduce overhead; 5. Pay attention to partition table configuration. Determining whether it is a statistical information problem can be achieved by checking the changes in the execution plan, index usage, result set estimation deviation and recent data changes. Mastering statistical information maintenance strategies can show
Aug 04, 2025 pm 02:45 PM
Wrapsuperglobalsinarequestobjecttoimprovetestabilityandmaintainability;2.Alwaysvalidateandsanitizeinputusingstructuredmethodsorlibraries;3.Abstractfileuploadswithadedicatedclasstocentralizesecuritychecks;4.ImplementCSRFprotectionforformsanduseauthent
Aug 04, 2025 pm 02:44 PM
TheViewTransitionsAPIsolvesthechallengeofcreatingsmooth,animatedtransitionsbetweenUIstatesinwebappsbyenablingdeclarative,browser-drivenanimations.1.ItworksbycapturingsnapshotsoftheDOMbeforeandafterachange,thenanimatingthedifferences—suchaselementmove
Aug 04, 2025 pm 02:30 PM
Keepcasesfocusedbydelegatingcomplexlogictodedicatedfunctions;2.Alwaysincludeadefaultcasetohandleunexpectedvaluessafely;3.Avoidfall-throughlogicunlessintentionalandclearlycommented;4.Usereturninsteadofbreakinfunctionstoreducevariableusageandenableearl
Aug 04, 2025 pm 02:26 PM
PHPautomaticallyparsesarray-likequerystringsintostructured$_GETarrays,enablingcomplexdatahandling.1.Use?colors[]=red&colors[]=bluetogetindexedarrays.2.Use?user[name]=Alice&user[age]=25forassociativearrays.3.Nestwith?data0[]=phpformultidimensi
Aug 04, 2025 pm 02:22 PM
Checkifthenetworkinterfaceisupusingipaandbringitupwithsudoiplinksetupifnecessary;2.VerifyIPconfigurationandrenewDHCPleasewithsudodhclientorcorrectstatic/Netplansettings;3.Testconnectivitylocallywithping127.0.0.1,thentothegateway(e.g.,ping192.168.1.1)
Aug 04, 2025 pm 02:15 PM
Using$GLOBALSmaybeacceptableinlegacysystemslikeWordPresspluginswhereitensurescompatibility,2.Itcanbeusedtemporarilyduringbootstrappingbeforedependencyinjectionisavailable,3.Itissuitableforread-onlydebuggingtoolsindevelopmentenvironments.Despitethesec
Aug 04, 2025 pm 02:10 PM
Using nested arrays is suitable for data with hierarchical relationships. 1. Use nested arrays when representing organizational structures, menus or classifications; 2. Keep the array structure consistent and unify key names and data types; 3. Use recursive functions to traverse deep structures; 4. Convert flat data into tree structures to build hierarchies; 5. Pay attention to performance, avoid excessive nesting, and use cache or object optimization if necessary. Reasonable design of array structures can improve code maintainability and execution efficiency.
Aug 04, 2025 pm 02:07 PM
TocreateandmanageswapspaceonLinux,firstcheckexistingswapandmemoryusingsudoswapon--showorfree-h,thencreateaswapfilewithfallocateordd,setpermissionswithchmod600,formatitwithmkswap,andenableitviaswapon.Next,makeitpermanentbyaddinganentryto/etc/fstab,and
Aug 04, 2025 pm 02:04 PM
BEMisanamingmethodologythatsolvesCSSscalabilityissuesbyintroducingaclearstructureusingBlock,Element,andModifier.1.Itavoidsnamingconflictsthroughuniqueclassnameslikeblock__element.2.Itreducesspecificitywarsbypromotingflat,independentselectors.3.Itimpr
Aug 04, 2025 pm 01:46 PM
useMemo is used to cache expensive computed values, and useCallback is used to cache function instances to avoid unnecessary re-rendering of child components. 1. UseMemo recalculates the value when the dependency changes, which is suitable for filtering large arrays or complex calculations; 2. useCallback keeps the function reference unchanged, and is suitable for callback functions passed to subcomponents optimized by React.memo; 3. Both should be used with caution and only applies when performance bottlenecks are found to avoid over-optimization affecting code readability. Using them correctly can significantly improve React application performance.
Aug 04, 2025 pm 01:32 PM
