Welcome to Exakat’s documentation!¶
Contents:
- 1. Introduction
- 2. Exakat features
- 2.1. Features list
- 2.2. 389 analyzers
- 2.3. Compatible with PHP 5.2 to 8.0-dev
- 2.4. Migration guide from 5.2 to 8.0-dev
- 2.5. Modernize your code
- 2.6. Bug fixes that impact the code
- 2.7. appinfo(): the list of PHP features
- 2.8. List of significant PHP directives
- 2.9. Framework and application support
- 2.10. Hierarchy Diagrams
- 2.11. Code visualizations
- 3. Installation
- 3.1. Summary
- 3.2. Requirements
- 3.3. Download Exakat
- 3.4. Quick installation with exakat.phar
- 3.5. Quick installation with OSX
- 3.6. Full installation with Debian/Ubuntu
- 3.7. Quick installation with Debian/Ubuntu
- 3.8. Installation guide with Composer
- 3.9. Using multiple PHP versions
- 3.10. Optional installations
- 3.11. Installation guide with Docker
- 3.12. Installation guide with Vagrant and Ansible
- 4. Upgrading
- 5. Tutorials
- 6. Frequently Asked Questions
- 6.1. Summary
- 6.2. I need special command to get my code
- 6.3. Can I checkout that branch?
- 6.4. Can I clone with my ssh keys?
- 6.5. After init, my project has no code!
- 6.6. The project is too big
- 6.7. Java Out Of Memory Error
- 6.8. How can I run a very large project?
- 6.9. Does exakat runs on Java 8?
- 6.10. Where can I find the report
- 6.11. Can I run exakat on local code?
- 6.12. Can I ignore a dir or a file?
- 6.13. Can I audit only one folder in vendor?
- 6.14. Can I run Exakat with PHP 5?
- 6.15. I get the error ‘The executable ‘ansible-playbook’ Vagrant is trying to run was not found’
- 6.16. Can I run exakat on Windows?
- 6.17. Does exakat send my code to a central server?
- 6.18. “cat: write error: Broken pipe” : is it bad?
- 7. Exakat commands
- 8. Rulesets
- 9. Rules list
- 9.1. Introduction
- 9.2. $HTTP_RAW_POST_DATA Usage
- 9.3. $this Belongs To Classes Or Traits
- 9.4. $this Is Not An Array
- 9.5. $this Is Not For Static Methods
- 9.6. ** For Exponent
- 9.7. ::class
- 9.8. @ Operator
- 9.9. Abstract Or Implements
- 9.10. Abstract Static Methods
- 9.11. Access Protected Structures
- 9.12. Accessing Private
- 9.13. Add Default Value
- 9.14. Adding Zero
- 9.15. Aliases Usage
- 9.16. All Uppercase Variables
- 9.17. Already Parents Interface
- 9.18. Already Parents Trait
- 9.19. Altering Foreach Without Reference
- 9.20. Alternative Syntax Consistence
- 9.21. Always Anchor Regex
- 9.22. Always Positive Comparison
- 9.23. Always Use Function With array_key_exists()
- 9.24. Ambiguous Array Index
- 9.25. Ambiguous Static
- 9.26. Ambiguous Visibilities
- 9.27. Anonymous Classes
- 9.28. Argument Should Be Typehinted
- 9.29. Assert Function Is Reserved
- 9.30. Assign And Compare
- 9.31. Assign Default To Properties
- 9.32. Assign With And
- 9.33. Assigned Twice
- 9.34. Autoappend
- 9.35. Avoid Concat In Loop
- 9.36. Avoid Large Array Assignation
- 9.37. Avoid Optional Properties
- 9.38. Avoid Parenthesis
- 9.39. Avoid Real
- 9.40. Avoid Self In Interface
- 9.41. Avoid Substr() One
- 9.42. Avoid Those Hash Functions
- 9.43. Avoid Using stdClass
- 9.44. Avoid array_push()
- 9.45. Avoid array_unique()
- 9.46. Avoid get_class()
- 9.47. Avoid glob() Usage
- 9.48. Avoid mb_dectect_encoding()
- 9.49. Avoid option arrays in constructors
- 9.50. Avoid set_error_handler $context Argument
- 9.51. Avoid sleep()/usleep()
- 9.52. Bad Constants Names
- 9.53. Bad Typehint Relay
- 9.54. Bail Out Early
- 9.55. Binary Glossary
- 9.56. Bracketless Blocks
- 9.57. Break Outside Loop
- 9.58. Break With 0
- 9.59. Break With Non Integer
- 9.60. Buried Assignation
- 9.61. Cache Variable Outside Loop
- 9.62. Callback Needs Return
- 9.63. Calltime Pass By Reference
- 9.64. Can’t Count Non-Countable
- 9.65. Can’t Extend Final
- 9.66. Can’t Throw Throwable
- 9.67. Cant Implement Traversable
- 9.68. Cant Inherit Abstract Method
- 9.69. Cant Instantiate Class
- 9.70. Cant Use Return Value In Write Context
- 9.71. Case Insensitive Constants
- 9.72. Cast To Boolean
- 9.73. Casting Ternary
- 9.74. Catch Overwrite Variable
- 9.75. Check All Types
- 9.76. Check Crypto Key Length
- 9.77. Check JSON
- 9.78. Check On __Call Usage
- 9.79. Child Class Removes Typehint
- 9.80. Class Const With Array
- 9.81. Class Could Be Final
- 9.82. Class Function Confusion
- 9.83. Class Should Be Final By Ocramius
- 9.84. Class Without Parent
- 9.85. Class, Interface Or Trait With Identical Names
- 9.86. Classes Mutually Extending Each Other
- 9.87. Clone With Non-Object
- 9.88. Close Tags
- 9.89. Closure Could Be A Callback
- 9.90. Closure May Use $this
- 9.91. Coalesce And Concat
- 9.92. Coalesce Equal
- 9.93. Common Alternatives
- 9.94. Compact Inexistant Variable
- 9.95. Compare Hash
- 9.96. Compared Comparison
- 9.97. Complex Dynamic Names
- 9.98. Concat And Addition
- 9.99. Concat Empty String
- 9.100. Concrete Visibility
- 9.101. Configure Extract
- 9.102. Const Visibility Usage
- 9.103. Const With Array
- 9.104. Constant Class
- 9.105. Constant Comparison
- 9.106. Constant Scalar Expressions
- 9.107. Constants Created Outside Its Namespace
- 9.108. Constants With Strange Names
- 9.109. Continue Is For Loop
- 9.110. Could Be Abstract Class
- 9.111. Could Be Class Constant
- 9.112. Could Be Constant
- 9.113. Could Be Else
- 9.114. Could Be Private Class Constant
- 9.115. Could Be Protected Class Constant
- 9.116. Could Be Protected Method
- 9.117. Could Be Protected Property
- 9.118. Could Be Static
- 9.119. Could Be Static Closure
- 9.120. Could Be Typehinted Callable
- 9.121. Could Make A Function
- 9.122. Could Return Void
- 9.123. Could Type With Array
- 9.124. Could Type With Boolean
- 9.125. Could Type With Int
- 9.126. Could Type With Iterable
- 9.127. Could Type With String
- 9.128. Could Typehint
- 9.129. Could Use Alias
- 9.130. Could Use Compact
- 9.131. Could Use Short Assignation
- 9.132. Could Use Try
- 9.133. Could Use __DIR__
- 9.134. Could Use array_fill_keys
- 9.135. Could Use array_unique
- 9.136. Could Use self
- 9.137. Could Use str_repeat()
- 9.138. Crc32() Might Be Negative
- 9.139. Dangling Array References
- 9.140. Deep Definitions
- 9.141. Define With Array
- 9.142. Dependant Abstract Classes
- 9.143. Dependant Trait
- 9.144. Deprecated Functions
- 9.145. Dereferencing String And Arrays
- 9.146. Detect Current Class
- 9.147. Direct Call To __clone()
- 9.148. Direct Injection
- 9.149. Directly Use File
- 9.150. Disconnected Classes
- 9.151. Do In Base
- 9.152. Don’t Be Too Manual
- 9.153. Don’t Change Incomings
- 9.154. Don’t Echo Error
- 9.155. Don’t Loop On Yield
- 9.156. Don’t Read And Write In One Expression
- 9.157. Don’t Send $this In Constructor
- 9.158. Don’t Unset Properties
- 9.159. Dont Change The Blind Var
- 9.160. Dont Collect Void
- 9.161. Dont Mix ++
- 9.162. Double Assignation
- 9.163. Double Instructions
- 9.164. Double array_flip()
- 9.165. Drop Else After Return
- 9.166. Drop Substr Last Arg
- 9.167. Duplicate Literal
- 9.168. Dynamic Library Loading
- 9.169. Echo Or Print
- 9.170. Echo With Concat
- 9.171. Ellipsis Usage
- 9.172. Else If Versus Elseif
- 9.173. Empty Blocks
- 9.174. Empty Classes
- 9.175. Empty Function
- 9.176. Empty Instructions
- 9.177. Empty Interfaces
- 9.178. Empty List
- 9.179. Empty Namespace
- 9.180. Empty Slots In Arrays
- 9.181. Empty Traits
- 9.182. Empty Try Catch
- 9.183. Empty With Expression
- 9.184. Encoded Simple Letters
- 9.185. Eval() Usage
- 9.186. Exceeding Typehint
- 9.187. Exception Order
- 9.188. Exit() Usage
- 9.189. Exponent Usage
- 9.190. Failed Substr Comparison
- 9.191. Fetch One Row Format
- 9.192. Filter To add_slashes()
- 9.193. Final Class Usage
- 9.194. Final Methods Usage
- 9.195. Flexible Heredoc
- 9.196. Fn Argument Variable Confusion
- 9.197. For Using Functioncall
- 9.198. Foreach Don’t Change Pointer
- 9.199. Foreach On Object
- 9.200. Foreach Reference Is Not Modified
- 9.201. Foreach With list()
- 9.202. Forgotten Interface
- 9.203. Forgotten Thrown
- 9.204. Forgotten Visibility
- 9.205. Forgotten Whitespace
- 9.206. Fossilized Method
- 9.207. Fully Qualified Constants
- 9.208. Function Subscripting
- 9.209. Function Subscripting, Old Style
- 9.210. Functions Removed In PHP 5.4
- 9.211. Functions Removed In PHP 5.5
- 9.212. Generator Cannot Return
- 9.213. Getting Last Element
- 9.214. Global Inside Loop
- 9.215. Global Usage
- 9.216. Group Use Declaration
- 9.217. Group Use Trailing Comma
- 9.218. Hardcoded Passwords
- 9.219. Hash Algorithms
- 9.220. Hash Algorithms Incompatible With PHP 5.3
- 9.221. Hash Algorithms Incompatible With PHP 5.4/5.5
- 9.222. Hash Algorithms Incompatible With PHP 7.1-
- 9.223. Hash Algorithms Incompatible With PHP 7.4-
- 9.224. Hash Will Use Objects
- 9.225. Heredoc Delimiter
- 9.226. Hexadecimal In String
- 9.227. Hidden Nullable
- 9.228. Hidden Use Expression
- 9.229. Htmlentities Calls
- 9.230. Identical Conditions
- 9.231. Identical Consecutive Expression
- 9.232. Identical On Both Sides
- 9.233. If With Same Conditions
- 9.234. Iffectations
- 9.235. Illegal Name For Method
- 9.236. Implement Is For Interface
- 9.237. Implemented Methods Are Public
- 9.238. Implied If
- 9.239. Implode One Arg
- 9.240. Implode() Arguments Order
- 9.241. Inclusion Wrong Case
- 9.242. Incompatible Signature Methods
- 9.243. Incompatible Signature Methods With Covariance
- 9.244. Incompilable Files
- 9.245. Inconsistent Elseif
- 9.246. Indices Are Int Or String
- 9.247. Indirect Injection
- 9.248. Infinite Recursion
- 9.249. Instantiating Abstract Class
- 9.250. Insufficient Property Typehint
- 9.251. Insufficient Typehint
- 9.252. Integer As Property
- 9.253. Integer Conversion
- 9.254. Interfaces Is Not Implemented
- 9.255. Interpolation
- 9.256. Invalid Constant Name
- 9.257. Invalid Octal In String
- 9.258. Invalid Pack Format
- 9.259. Invalid Regex
- 9.260. Is Actually Zero
- 9.261. Is_A() With String
- 9.262. Isset Multiple Arguments
- 9.263. Isset() On The Whole Array
- 9.264. Joining file()
- 9.265. Keep Files Access Restricted
- 9.266. List Short Syntax
- 9.267. List With Appends
- 9.268. List With Keys
- 9.269. List With Reference
- 9.270. Locally Unused Property
- 9.271. Logical Mistakes
- 9.272. Logical Operators Favorite
- 9.273. Logical Should Use Symbolic Operators
- 9.274. Logical To in_array
- 9.275. Lone Blocks
- 9.276. Long Arguments
- 9.277. Lost References
- 9.278. Magic Visibility
- 9.279. Make Global A Property
- 9.280. Make Magic Concrete
- 9.281. Make One Call With Array
- 9.282. Malformed Octal
- 9.283. Max Level Of Nesting
- 9.284. Mbstring Third Arg
- 9.285. Mbstring Unknown Encoding
- 9.286. Memoize MagicCall
- 9.287. Merge If Then
- 9.288. Method Collision Traits
- 9.289. Method Could Be Private Method
- 9.290. Method Could Be Static
- 9.291. Method Signature Must Be Compatible
- 9.292. Methodcall On New
- 9.293. Methods Without Return
- 9.294. Minus One On Error
- 9.295. Mismatch Type And Default
- 9.296. Mismatched Default Arguments
- 9.297. Mismatched Ternary Alternatives
- 9.298. Mismatched Typehint
- 9.299. Missing Abstract Method
- 9.300. Missing Cases In Switch
- 9.301. Missing Include
- 9.302. Missing New ?
- 9.303. Missing Parenthesis
- 9.304. Missing Typehint
- 9.305. Mistaken Concatenation
- 9.306. Mixed Concat And Interpolation
- 9.307. Mixed Keys Arrays
- 9.308. Mkdir Default
- 9.309. Modernize Empty With Expression
- 9.310. Multiple Alias Definitions
- 9.311. Multiple Alias Definitions Per File
- 9.312. Multiple Class Declarations
- 9.313. Multiple Classes In One File
- 9.314. Multiple Constant Definition
- 9.315. Multiple Definition Of The Same Argument
- 9.316. Multiple Exceptions Catch()
- 9.317. Multiple Identical Trait Or Interface
- 9.318. Multiple Index Definition
- 9.319. Multiple Type Variable
- 9.320. Multiple Unset()
- 9.321. Multiple Usage Of Same Trait
- 9.322. Multiples Identical Case
- 9.323. Multiply By One
- 9.324. Must Call Parent Constructor
- 9.325. Must Return Methods
- 9.326. Named Regex
- 9.327. Negative Power
- 9.328. Nested Ifthen
- 9.329. Nested Ternary
- 9.330. Nested Ternary Without Parenthesis
- 9.331. Never Used Parameter
- 9.332. Never Used Properties
- 9.333. New Constants In PHP 7.2
- 9.334. New Constants In PHP 7.4
- 9.335. New Functions In PHP 5.4
- 9.336. New Functions In PHP 5.5
- 9.337. New Functions In PHP 5.6
- 9.338. New Functions In PHP 7.0
- 9.339. New Functions In PHP 7.1
- 9.340. New Functions In PHP 7.2
- 9.341. New Functions In PHP 7.3
- 9.342. New Functions In PHP 7.4
- 9.343. New Functions In PHP 8.0
- 9.344. Next Month Trap
- 9.345. No Append On Source
- 9.346. No Boolean As Default
- 9.347. No Choice
- 9.348. No Class As Typehint
- 9.349. No Class In Global
- 9.350. No Count With 0
- 9.351. No Direct Call To Magic Method
- 9.352. No Direct Usage
- 9.353. No ENT_IGNORE
- 9.354. No Empty Regex
- 9.355. No Garantee For Property Constant
- 9.356. No Hardcoded Hash
- 9.357. No Hardcoded Ip
- 9.358. No Hardcoded Path
- 9.359. No Hardcoded Port
- 9.360. No List With String
- 9.361. No Literal For Reference
- 9.362. No Magic With Array
- 9.363. No More Curly Arrays
- 9.364. No Need For Else
- 9.365. No Need For get_class()
- 9.366. No Net For Xml Load
- 9.367. No Parenthesis For Language Construct
- 9.368. No Plus One
- 9.369. No Public Access
- 9.370. No Real Comparison
- 9.371. No Reference For Static Property
- 9.372. No Reference For Ternary
- 9.373. No Reference On Left Side
- 9.374. No Return For Generator
- 9.375. No Return Or Throw In Finally
- 9.376. No Return Used
- 9.377. No Self Referencing Constant
- 9.378. No Spread For Hash
- 9.379. No String With Append
- 9.380. No Substr Minus One
- 9.381. No Weak SSL Crypto
- 9.382. No array_merge() In Loops
- 9.383. No get_class() With Null
- 9.384. No isset() With empty()
- 9.385. No mb_substr In Loop
- 9.386. Non Ascii Variables
- 9.387. Non Nullable Getters
- 9.388. Non Static Methods Called In A Static
- 9.389. Non-constant Index In Array
- 9.390. Non-lowercase Keywords
- 9.391. Not A Scalar Type
- 9.392. Not Equal Is Not !==
- 9.393. Not Not
- 9.394. Null On New
- 9.395. Null Or Boolean Arrays
- 9.396. Nullable Without Check
- 9.397. Numeric Literal Separator
- 9.398. Objects Don’t Need References
- 9.399. Old Style Constructor
- 9.400. Old Style __autoload()
- 9.401. One If Is Sufficient
- 9.402. One Letter Functions
- 9.403. One Variable String
- 9.404. Only Variable For Reference
- 9.405. Only Variable Passed By Reference
- 9.406. Only Variable Returned By Reference
- 9.407. Or Die
- 9.408. Order Of Declaration
- 9.409. Overwritten Exceptions
- 9.410. Overwritten Literals
- 9.411. Overwritten Source And Value
- 9.412. PHP 7.0 New Classes
- 9.413. PHP 7.0 New Interfaces
- 9.414. PHP 7.0 Removed Directives
- 9.415. PHP 7.0 Removed Functions
- 9.416. PHP 7.0 Scalar Typehints
- 9.417. PHP 7.1 Microseconds
- 9.418. PHP 7.1 Removed Directives
- 9.419. PHP 7.1 Scalar Typehints
- 9.420. PHP 7.2 Deprecations
- 9.421. PHP 7.2 Object Keyword
- 9.422. PHP 7.2 Removed Functions
- 9.423. PHP 7.2 Scalar Typehints
- 9.424. PHP 7.3 Last Empty Argument
- 9.425. PHP 7.3 Removed Functions
- 9.426. PHP 7.4 Constant Deprecation
- 9.427. PHP 7.4 Removed Directives
- 9.428. PHP 7.4 Removed Functions
- 9.429. PHP 7.4 Reserved Keyword
- 9.430. PHP 74 New Directives
- 9.431. PHP 8.0 Removed Constants
- 9.432. PHP 8.0 Removed Functions
- 9.433. PHP Keywords As Names
- 9.434. PHP5 Indirect Variable Expression
- 9.435. PHP7 Dirname
- 9.436. Parameter Hiding
- 9.437. Parent First
- 9.438. Parent, Static Or Self Outside Class
- 9.439. Parenthesis As Parameter
- 9.440. Pathinfo() Returns May Vary
- 9.441. Php 7 Indirect Expression
- 9.442. Php 7.1 New Class
- 9.443. Php 7.2 New Class
- 9.444. Php 7.4 New Class
- 9.445. Php 8.0 Only TypeHints
- 9.446. Php 8.0 Variable Syntax Tweaks
- 9.447. Php7 Relaxed Keyword
- 9.448. Phpinfo
- 9.449. Possible Increment
- 9.450. Possible Infinite Loop
- 9.451. Possible Missing Subpattern
- 9.452. Pre-increment
- 9.453. Prefix And Suffixes With Typehint
- 9.454. Preprocess Arrays
- 9.455. Preprocessable
- 9.456. Print And Die
- 9.457. Printf Number Of Arguments
- 9.458. Processing Collector
- 9.459. Property Could Be Local
- 9.460. Property Could Be Private Property
- 9.461. Property Used In One Method Only
- 9.462. Property Variable Confusion
- 9.463. Queries In Loops
- 9.464. Raised Access Level
- 9.465. Random Without Try
- 9.466. Randomly Sorted Arrays
- 9.467. Redeclared PHP Functions
- 9.468. Redefined Class Constants
- 9.469. Redefined Default
- 9.470. Redefined Private Property
- 9.471. Redefined Property
- 9.472. Reflection Export() Is Deprecated
- 9.473. Regex On Arrays
- 9.474. Register Globals
- 9.475. Relay Function
- 9.476. Repeated Interface
- 9.477. Repeated Regex
- 9.478. Repeated print()
- 9.479. Reserved Keywords In PHP 7
- 9.480. Results May Be Missing
- 9.481. Rethrown Exceptions
- 9.482. Return True False
- 9.483. Return With Parenthesis
- 9.484. Reuse Variable
- 9.485. Safe Curl Options
- 9.486. Safe HTTP Headers
- 9.487. Same Conditions In Condition
- 9.488. Same Variables Foreach
- 9.489. Scalar Are Not Arrays
- 9.490. Scalar Or Object Property
- 9.491. Self Using Trait
- 9.492. Semantic Typing
- 9.493. Session Lazy Write
- 9.494. Set Aside Code
- 9.495. Set Cookie Safe Arguments
- 9.496. Setlocale() Uses Constants
- 9.497. Several Instructions On The Same Line
- 9.498. Short Open Tags
- 9.499. Short Syntax For Arrays
- 9.500. Should Be Single Quote
- 9.501. Should Chain Exception
- 9.502. Should Deep Clone
- 9.503. Should Have Destructor
- 9.504. Should Make Alias
- 9.505. Should Make Ternary
- 9.506. Should Preprocess Chr()
- 9.507. Should Typecast
- 9.508. Should Use Coalesce
- 9.509. Should Use Constants
- 9.510. Should Use Explode Args
- 9.511. Should Use Foreach
- 9.512. Should Use Function
- 9.513. Should Use Local Class
- 9.514. Should Use Math
- 9.515. Should Use Operator
- 9.516. Should Use Prepared Statement
- 9.517. Should Use SetCookie()
- 9.518. Should Use array_column()
- 9.519. Should Use array_filter()
- 9.520. Should Use session_regenerateid()
- 9.521. Should Yield With Key
- 9.522. Signature Trailing Comma
- 9.523. Silently Cast Integer
- 9.524. Similar Integers
- 9.525. Simple Global Variable
- 9.526. Simple Switch
- 9.527. Simplify Regex
- 9.528. Slice Arrays First
- 9.529. Slow Functions
- 9.530. Sqlite3 Requires Single Quotes
- 9.531. Static Loop
- 9.532. Static Methods Called From Object
- 9.533. Static Methods Can’t Contain $this
- 9.534. Strange Name For Constants
- 9.535. Strange Name For Variables
- 9.536. Strict Comparison With Booleans
- 9.537. String Initialization
- 9.538. String May Hold A Variable
- 9.539. Strings With Strange Space
- 9.540. Strpos()-like Comparison
- 9.541. Strtr Arguments
- 9.542. Substr To Trim
- 9.543. Substring First
- 9.544. Suspicious Comparison
- 9.545. Switch Fallthrough
- 9.546. Switch To Switch
- 9.547. Switch With Too Many Default
- 9.548. Switch Without Default
- 9.549. Ternary In Concat
- 9.550. Test Then Cast
- 9.551. Throw Functioncall
- 9.552. Throw In Destruct
- 9.553. Throw Was An Expression
- 9.554. Throws An Assignement
- 9.555. Timestamp Difference
- 9.556. Too Many Array Dimensions
- 9.557. Too Many Children
- 9.558. Too Many Dereferencing
- 9.559. Too Many Finds
- 9.560. Too Many Injections
- 9.561. Too Many Local Variables
- 9.562. Too Many Native Calls
- 9.563. Too Many Parameters
- 9.564. Trailing Comma In Calls
- 9.565. Trait Not Found
- 9.566. Typed Property Usage
- 9.567. Typehint Must Be Returned
- 9.568. Typehinted References
- 9.569. Unbinding Closures
- 9.570. Uncaught Exceptions
- 9.571. Unchecked Resources
- 9.572. Unconditional Break In Loop
- 9.573. Undefined ::class
- 9.574. Undefined Caught Exceptions
- 9.575. Undefined Class Constants
- 9.576. Undefined Classes
- 9.577. Undefined Constants
- 9.578. Undefined Functions
- 9.579. Undefined Insteadof
- 9.580. Undefined Interfaces
- 9.581. Undefined Parent
- 9.582. Undefined Properties
- 9.583. Undefined Trait
- 9.584. Undefined Variable
- 9.585. Undefined static:: Or self::
- 9.586. Unicode Escape Partial
- 9.587. Unicode Escape Syntax
- 9.588. Uninited Property
- 9.589. Union Typehint
- 9.590. Unitialized Properties
- 9.591. Unknown Pcre2 Option
- 9.592. Unkown Regex Options
- 9.593. Unpacking Inside Arrays
- 9.594. Unpreprocessed Values
- 9.595. Unreachable Class Constant
- 9.596. Unreachable Code
- 9.597. Unresolved Catch
- 9.598. Unresolved Classes
- 9.599. Unresolved Instanceof
- 9.600. Unresolved Use
- 9.601. Unserialize Second Arg
- 9.602. Unset In Foreach
- 9.603. Unthrown Exception
- 9.604. Unused Arguments
- 9.605. Unused Class Constant
- 9.606. Unused Classes
- 9.607. Unused Constants
- 9.608. Unused Functions
- 9.609. Unused Global
- 9.610. Unused Inherited Variable In Closure
- 9.611. Unused Interfaces
- 9.612. Unused Label
- 9.613. Unused Methods
- 9.614. Unused Private Methods
- 9.615. Unused Private Properties
- 9.616. Unused Protected Methods
- 9.617. Unused Returned Value
- 9.618. Unused Trait In Class
- 9.619. Unused Use
- 9.620. Unusual Case For PHP Functions
- 9.621. Upload Filename Injection
- 9.622. Use === null
- 9.623. Use Array Functions
- 9.624. Use Basename Suffix
- 9.625. Use Case Value
- 9.626. Use Class Operator
- 9.627. Use Const And Functions
- 9.628. Use Constant
- 9.629. Use Constant As Arguments
- 9.630. Use Count Recursive
- 9.631. Use DateTimeImmutable Class
- 9.632. Use Instanceof
- 9.633. Use List With Foreach
- 9.634. Use Lower Case For Parent, Static And Self
- 9.635. Use Named Boolean In Argument Definition
- 9.636. Use Nullable Type
- 9.637. Use PHP Object API
- 9.638. Use PHP7 Encapsed Strings
- 9.639. Use Pathinfo
- 9.640. Use Positive Condition
- 9.641. Use System Tmp
- 9.642. Use The Blind Var
- 9.643. Use Url Query Functions
- 9.644. Use With Fully Qualified Name
- 9.645. Use array_slice()
- 9.646. Use const
- 9.647. Use is_countable
- 9.648. Use json_decode() Options
- 9.649. Use password_hash()
- 9.650. Use pathinfo() Arguments
- 9.651. Use random_int()
- 9.652. Use session_start() Options
- 9.653. Used Once Property
- 9.654. Used Once Variables
- 9.655. Used Once Variables (In Scope)
- 9.656. Useless Abstract Class
- 9.657. Useless Alias
- 9.658. Useless Argument
- 9.659. Useless Brackets
- 9.660. Useless Casting
- 9.661. Useless Catch
- 9.662. Useless Check
- 9.663. Useless Constructor
- 9.664. Useless Default Argument
- 9.665. Useless Final
- 9.666. Useless Global
- 9.667. Useless Instructions
- 9.668. Useless Interfaces
- 9.669. Useless Parenthesis
- 9.670. Useless Referenced Argument
- 9.671. Useless Return
- 9.672. Useless Switch
- 9.673. Useless Type Check
- 9.674. Useless Unset
- 9.675. Uses Default Values
- 9.676. Using $this Outside A Class
- 9.677. Usort Sorting In PHP 7.0
- 9.678. Var Keyword
- 9.679. Variable Global
- 9.680. Variable Is Not A Condition
- 9.681. Variables With One Letter Names
- 9.682. Weak Typing
- 9.683. Weird Array Index
- 9.684. While(List() = Each())
- 9.685. Written Only Variables
- 9.686. Wrong Access Style to Property
- 9.687. Wrong Case Namespaces
- 9.688. Wrong Class Name Case
- 9.689. Wrong Function Name Case
- 9.690. Wrong Number Of Arguments
- 9.691. Wrong Optional Parameter
- 9.692. Wrong Parameter Type
- 9.693. Wrong Range Check
- 9.694. Wrong Returned Type
- 9.695. Wrong Type With Call
- 9.696. Wrong Typed Property Init
- 9.697. Wrong Typehinted Name
- 9.698. Wrong fopen() Mode
- 9.699. Yoda Comparison
- 9.700. __DIR__ Then Slash
- 9.701. __debugInfo() Usage
- 9.702. __toString() Throws Exception
- 9.703. array_key_exists() Speedup
- 9.704. array_key_exists() Works On Arrays
- 9.705. array_merge() And Variadic
- 9.706. crypt() Without Salt
- 9.707. curl_version() Has No Argument
- 9.708. error_reporting() With Integers
- 9.709. eval() Without Try
- 9.710. ext/apc
- 9.711. ext/dba
- 9.712. ext/ereg
- 9.713. ext/fdf
- 9.714. ext/mcrypt
- 9.715. ext/mhash
- 9.716. ext/ming
- 9.717. ext/mysql
- 9.718. filter_input() As A Source
- 9.719. fputcsv() In Loops
- 9.720. func_get_arg() Modified
- 9.721. idn_to_ascii() New Default
- 9.722. include_once() Usage
- 9.723. isset() With Constant
- 9.724. list() May Omit Variables
- 9.725. mb_strrpos() Third Argument
- 9.726. mcrypt_create_iv() With Default Values
- 9.727. move_uploaded_file Instead Of copy
- 9.728. openssl_random_pseudo_byte() Second Argument
- 9.729. parse_str() Warning
- 9.730. preg_match_all() Flag
- 9.731. preg_replace With Option e
- 9.732. self, parent, static Outside Class
- 9.733. set_exception_handler() Warning
- 9.734. strip_tags Skips Closed Tag
- 9.735. strpos() Too Much
- 9.736. time() Vs strtotime()
- 9.737. var_dump()… Usage
- 10. Real Code Cases
- 11. Reports
- 12. Configuration
- 13. Extensions
- 14. Custom analysis
- 15. Glossary
- 16. Definitions
- 17. Ideas
- 18. List of contributors
- 19. Annex