| Ambiguous Array Index | Analyze, All, Simple, Level 2, Semantics, ChangedBehavior | 5 | 2 | Minor | 10 % | 
| Append And Assign Arrays | Analyze, Internal, All, ChangedBehavior | 2 | 1 | Minor | 0 % | 
| Multiple Index Definition | Analyze, OneFile, All, Simple, Rector, CI-checks, CE | 2 | 2 | Minor | 33 % | 
| Null Or Boolean Arrays | Analyze, All | 12 | 4 | Minor | 0 % | 
| Too Many Array Dimensions | Analyze, All | 1 | 1 | Minor | 0 % | 
| Weak Type With Array | Analyze, All, ChangedBehavior | 269 | 50 | Minor | 0 % | 
| Abstract Or Implements | Analyze, All, LintButWontExec, ChangedBehavior | 3 | 3 | Major | 24 % | 
| Access Protected Structures | Analyze, All, Simple, ChangedBehavior | 6 | 3 | Major | 17 % | 
| Ambiguous Static | Analyze, All, Semantics, ChangedBehavior | 86 | 50 | Minor | 66 % | 
| Ambiguous Visibilities | Analyze, All, Semantics, ChangedBehavior | 45 | 27 | Minor | 70 % | 
| Avoid Optional Properties | Analyze, All, ChangedBehavior | 200 | 55 | Major | 84 % | 
| Class, Interface, Enum Or Trait With Identical Names | Analyze, All, ChangedBehavior | 2 | 2 | Minor | 19 % | 
| Clone With Non-Object | Analyze, All, LintButWontExec, ChangedBehavior | 6 | 4 | Minor | 33 % | 
| Could Be Abstract Class | Analyze, All, ClassReview, ChangedBehavior | 9 | 9 | Minor | 65 % | 
| Class Could Be Final | Analyze, All, ClassReview, ChangedBehavior | 263 | 260 | Minor | 96 % | 
| Method Could Be Static | Analyze, All, ClassReview, ChangedBehavior | 209 | 88 | Minor | 92 % | 
| Could Inject Parameter | Analyze, All, ClassReview, ChangedBehavior | 19 | 10 | Minor | 0 % | 
| Dependant Abstract Classes | Analyze, All, ClassReview, ChangedBehavior | 2 | 2 | Minor | 0 % | 
| Different Argument Counts | Analyze, All, ClassReview, ChangedBehavior | 7 | 7 | Minor | 0 % | 
| No Direct Call To Magic Method | Analyze, All, Level 2, CI-checks, CE | 1 | 1 | Major | 43 % | 
| Don't Unset Properties | Analyze, All, Top10, php-cs-fixable, CI-checks, CE, ChangedBehavior | 1 | 1 | Major | 42 % | 
| Empty Classes | Analyze, All, Simple, ChangedBehavior | 4 | 4 | Minor | 60 % | 
| Implicit Nullable Type | Analyze, All, ClassReview, ChangedBehavior | 13 | 4 | Minor | 0 % | 
| Incompatible Signature Methods With Covariance | Analyze, All, ChangedBehavior | 39 | 28 | Critical | 0 % | 
| Instantiating Abstract Class | Analyze, All, Simple | 9 | 3 | Major | 13 % | 
| Locally Unused Property | Dead code, All, Simple, Unused, ChangedBehavior | 57 | 18 | Minor | 76 % | 
| Assign Default To Properties | Analyze, ClearPHP, All, Simple, Level 2, ChangedBehavior | 3 | 2 | Minor | 71 % | 
| Make Global A Property | Analyze, All, Simple, ChangedBehavior | 1 | 1 | Minor | 37 % | 
| Method Signature Must Be Compatible | Analyze, All, LintButWontExec, ChangedBehavior | 7 | 7 | Critical | 53 % | 
| Mismatch Properties Types | Analyze, All, LintButWontExec, ClassReview, ChangedBehavior | 10 | 6 | Minor | 0 % | 
| New Object Then Immediate Call | Analyze, All, ClassReview | 66 | 36 | Minor | 0 % | 
| No Public Access | Analyze, All, ChangedBehavior | 56 | 24 | Minor | 61 % | 
| Non Nullable Getters | Analyze, All, ClassReview, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| Forgotten Visibility | Analyze, ClearPHP, All, Simple, Level 1, CI-checks, CE | 1161 | 233 | Minor | 42 % | 
| Non Static Methods Called In A Static | Analyze, CompatibilityPHP54, CompatibilityPHP55, CompatibilityPHP56, CompatibilityPHP53, All, Simple, CI-checks, CE, ChangedBehavior | 2 | 1 | Minor | 20 % | 
| Parent First | Analyze, All, Suggestions, ChangedBehavior | 7 | 7 | Minor | 56 % | 
| Parent Is Not Static | Analyze, All, ClassReview, ChangedBehavior | 1 | 1 | Major | 0 % | 
| Property Could Be Local | Analyze, All, ClassReview, ChangedBehavior | 20 | 14 | Minor | 76 % | 
| Same Name For Property And Method | Analyze, All, ClassReview, Semantics, ChangedBehavior | 60 | 6 | Minor | 0 % | 
| Never Used Properties | Analyze, All, Simple, Unused, ChangedBehavior | 10 | 7 | Minor | 71 % | 
| Property Used In One Method Only | Analyze, All, ChangedBehavior | 37 | 26 | Minor | 84 % | 
| Scalar Or Object Property | Analyze, All | 3 | 2 | Minor | 32 % | 
| Could Use self | Analyze, All, Simple, Suggestions, Level 3, ClassReview, ChangedBehavior | 62 | 23 | Minor | 63 % | 
| Should Use Local Class | Analyze, ClearPHP, All, Simple, ChangedBehavior | 194 | 69 | Minor | 95 % | 
| Static Methods Called From Object | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 1 | 1 | Minor | 50 % | 
| $this Belongs To Classes Or Traits | Analyze, All, Simple, LintButWontExec, ChangedBehavior | 458 | 176 | Major | 32 % | 
| Wrong Access Style to Property | Analyze, All, Level 2, ClassReview, CI-checks, CE | 144 | 17 | Critical | 37 % | 
| Undefined Classes | Analyze, All, Stubs, Undefined | 238 | 80 | Major | 91 % | 
| Undefined Class Constants | Analyze, All, LintButWontExec, CI-checks, CE, Stubs, ChangedBehavior, Undefined | 6 | 3 | Major | 62 % | 
| Undefined Properties | Analyze, ClearPHP, All, Simple, CI-checks, CE, CompatibilityPHP82, ChangedBehavior, Undefined | 590 | 131 | Major | 61 % | 
| Undefined static:: Or self:: | Analyze, All, Simple, ChangedBehavior, Undefined | 5 | 2 | Minor | 35 % | 
| Unfinished Object | Analyze, All, ClassReview, ChangedBehavior | 4 | 4 | Major | 0 % | 
| Unreachable Method | Analyze, Dead code, All, ClassReview, Unused, ChangedBehavior | 4 | 2 | Minor | 0 % | 
| Unresolved Catch | Dead code, ClearPHP, All, ChangedBehavior | 3 | 3 | Major | 52 % | 
| Unresolved Classes | Analyze, All, Stubs, ChangedBehavior | 49 | 25 | Major | 76 % | 
| Unresolved Instanceof | Analyze, Dead code, ClearPHP, All, Simple, Top10, ChangedBehavior | 7 | 5 | Major | 48 % | 
| Unused Classes | Analyze, Dead code, All, Simple, Unused, ChangedBehavior | 21 | 21 | Major | 67 % | 
| Unused Methods | Dead code, All, Simple, Unused, ChangedBehavior | 699 | 252 | Minor | 96 % | 
| Unused Private Methods | Dead code, OneFile, All, Simple, Unused, ChangedBehavior | 1 | 1 | Minor | 50 % | 
| Unused Private Properties | Dead code, OneFile, All, Simple, Unused | 3 | 3 | Minor | 51 % | 
| Unused Protected Methods | Dead code, All, Unused, ChangedBehavior | 4 | 2 | Major | 68 % | 
| Unused Public Methods | Analyze, All, ChangedBehavior | 170 | 69 | Minor | 0 % | 
| Use ::Class Operator | Analyze, Performances, All, Simple, CI-checks, CE, ChangedBehavior | 179 | 32 | Minor | 71 % | 
| Use Instanceof | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 2 | 2 | Major | 63 % | 
| Used Once Property | Analyze, All, ChangedBehavior | 2 | 2 | Minor | 74 % | 
| Useless Abstract Class | Analyze, All, Simple, ChangedBehavior | 6 | 6 | Minor | 33 % | 
| Useless Method | Analyze, All, ChangedBehavior | 2 | 2 | Minor | 0 % | 
| Illegal Name For Method | Analyze, OneFile, All, Simple | 3 | 3 | Major | 20 % | 
| Wrong Typed Property Default | Analyze, All, LintButWontExec, ClassReview, CI-checks, CE | 8 | 7 | Minor | 0 % | 
| Use const | Analyze, Coding Conventions, All, Top10, CI-checks, CE | 8 | 4 | Minor | 54 % | 
| Undefined Constants | stubs | 3 | 2 | Minor | 71 % | 
| Unused Constants | Dead code, All, Simple, Unused, ChangedBehavior | 1 | 1 | Minor | 39 % | 
| Could Be A Constant | All, Dump, ChangedBehavior | 143 | 55 | Minor | 0 % | 
| Catch With Undefined Variable | Analyze, All, ChangedBehavior, Undefined | 2 | 2 | Minor | 0 % | 
| Undefined Caught Exceptions | Dead code, All, ChangedBehavior | 3 | 3 | None | 53 % | 
| Caught Exceptions | All, Dump, ChangedBehavior | 66 | 32 | None | 100 % | 
| Converted Exceptions | Analyze, All, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| Could Drop Variable | Dead code, All, Suggestions, ChangedBehavior | 16 | 10 | Minor | 0 % | 
| Throw Raw Exceptions | Analyze, All, Suggestions, ChangedBehavior | 54 | 23 | Minor | 0 % | 
| Uncaught Exceptions | Analyze, All, ChangedBehavior | 64 | 28 | Minor | 84 % | 
| Useless Try | Analyze, All, ChangedBehavior | 49 | 28 | Minor | 0 % | 
| Missing Include | Analyze, All, ChangedBehavior | 6 | 5 | Critical | 65 % | 
| Native Alias Functions Usage | Analyze, OneFile, ClearPHP, All, Simple, Level 1, CI-checks, CE, ChangedBehavior | 17 | 10 | Minor | 20 % | 
| Use Named Boolean In Argument Definition | Analyze, All, ChangedBehavior | 77 | 38 | Minor | 84 % | 
| Callback Function Needs Return | Analyze, All, CI-checks, CE | 1 | 1 | Major | 42 % | 
| Could Make A Function | Analyze, All, Suggestions, ChangedBehavior | 326 | 114 | Minor | 66 % | 
| Deep Definitions | Analyze, Appinfo, All, Simple, CE, ChangedBehavior | 2 | 2 | Major | 13 % | 
| Don't Collect Void | Analyze, All, ChangedBehavior | 26 | 17 | Minor | 0 % | 
| Empty Function | Analyze, All, Simple, ChangedBehavior | 7 | 3 | Minor | 74 % | 
| Hardcoded Passwords | Analyze, Security, OneFile, All, Simple, Level 3, ChangedBehavior | 59 | 15 | Major | 70 % | 
| Insufficient Type | Analyze, All, Typechecks, ChangedBehavior | 1 | 1 | Major | 43 % | 
| Method Is Not An If | Analyze, All | 74 | 45 | Minor | 0 % | 
| Mismatch Parameter Name | Analyze, All, CompatibilityPHP80, CE, ChangedBehavior | 11 | 9 | Minor | 0 % | 
| Mismatched Default Arguments | Analyze, All, Typechecks, ChangedBehavior | 32 | 16 | Minor | 80 % | 
| Mismatched Type | Analyze, All, Typechecks, ChangedBehavior | 19 | 10 | Major | 66 % | 
| Modified Typed Parameter | Analyze, All, ClassReview, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| Must Return Methods | Analyze, All, Simple, Level 2, LintButWontExec, CI-checks, CE, ChangedBehavior | 1 | 1 | Major | 34 % | 
| Never Called Parameter | Analyze, All, Suggestions, Rector, Unused | 39 | 18 | Minor | 92 % | 
| No Boolean As Default | Analyze, All | 80 | 39 | Minor | 84 % | 
| No Default For Referenced Parameter | Analyze, All, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| No Return Used | Analyze, All, Suggestions, Level 4, ChangedBehavior | 34 | 18 | Minor | 69 % | 
| Redeclared PHP Functions | Analyze, Appinfo, All, Simple, CI-checks, CE, ChangedBehavior | 1 | 1 | Minor | 26 % | 
| Too Many Local Variables | Analyze, All | 13 | 10 | Minor | 64 % | 
| Class-typed References | Analyze, All, CI-checks, CE | 21 | 2 | Minor | 37 % | 
| Undefined Functions | stubs | 2 | 1 | Major | 68 % | 
| Unused Parameter | Analyze, All, Simple, Unused | 25 | 19 | Major | 90 % | 
| Unused Returned Value | Analyze, Dead code, OneFile, All, Simple, Unused | 207 | 65 | Minor | 41 % | 
| Use Constant As Arguments | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 2 | 2 | Major | 30 % | 
| Useless Referenced Argument | Analyze, All, ChangedBehavior | 1 | 1 | Minor | 58 % | 
| Useless Return | Analyze, OneFile, All, Simple, Level 4 | 7 | 6 | Minor | 30 % | 
| Uses Default Values | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 3361 | 466 | Minor | 98 % | 
| Using Deprecated Method | Analyze, All, Attributes | 102 | 34 | Minor | 0 % | 
| Wrong Number Of Arguments | Analyze, OneFile, All, Simple, CI-checks, CE, Stubs, ChangedBehavior | 51 | 33 | Major | 81 % | 
| Wrong Type Returned | Analyze, All, LintButWontExec, ClassReview, CI-checks, CE, ChangedBehavior | 338 | 68 | Minor | 0 % | 
| Wrong Type With Call | Analyze, All, Typechecks, CI-checks, CE, ChangedBehavior | 12 | 4 | Minor | 0 % | 
| Already Parents Interface | Analyze, All, Suggestions, Level 3, ChangedBehavior | 1 | 1 | Minor | 26 % | 
| Forgotten Interface | Analyze, All, ChangedBehavior | 5 | 5 | Minor | 48 % | 
| Empty Interfaces | Analyze, All, Simple, ChangedBehavior | 1 | 1 | Minor | 41 % | 
| Repeated Interface | Analyze, All, LintButWontExec, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| Undefined Interfaces | Analyze, All, LintButWontExec, CI-checks, CE, ChangedBehavior, Undefined | 26 | 11 | Major | 72 % | 
| Unused Interfaces | Dead code, All, Simple, Suggestions, Level 2, Unused, ChangedBehavior | 2 | 2 | Minor | 26 % | 
| Useless Interfaces | Analyze, ClearPHP, All, Simple, ClassReview, Typechecks, ChangedBehavior | 7 | 7 | Minor | 59 % | 
| Hidden Use Expression | Analyze, OneFile, All, Simple, CI-checks, CE, ChangedBehavior | 8 | 3 | Minor | 23 % | 
| Multiple Alias Definitions | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 3 | 3 | Minor | 44 % | 
| Should Make Alias | Analyze, OneFile, All, Simple, CI-checks, CE, ChangedBehavior | 233 | 39 | Minor | 46 % | 
| Unresolved Use | Analyze, ClearPHP, All, Simple, ChangedBehavior | 11 | 9 | Major | 69 % | 
| Unused Use | Dead code, ClearPHP, All, Simple, php-cs-fixable, Unused, ChangedBehavior | 24 | 18 | Major | 60 % | 
| Use With Fully Qualified Name | Analyze, Coding Conventions, PHP recommendations, All, Simple, ChangedBehavior | 2 | 2 | Minor | 18 % | 
| No array_merge() In Loops | Analyze, Performances, ClearPHP, All, Simple, Level 2, Top10, CI-checks, CE, ChangedBehavior | 4 | 4 | Major | 57 % | 
| Logical To in_array() | Analyze, All, Level 2, ChangedBehavior | 5 | 4 | Minor | 67 % | 
| Pre-increment | Analyze, Performances, All, Simple, Level 4, CI-checks, CE, ChangedBehavior | 52 | 24 | Minor | 74 % | 
| strpos() Too Much | Analyze, All, CI-checks, CE, ChangedBehavior | 2 | 2 | Minor | 49 % | 
| array_key_exists() Works On Arrays | Analyze, All, CompatibilityPHP74, CE, ChangedBehavior | 7 | 5 | Minor | 0 % | 
| Assumptions | Analyze, All, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| Use random_int() | Analyze, Security, CompatibilityPHP71, All, Simple, Level 2, CI-checks, CE, ChangedBehavior | 43 | 28 | Major | 59 % | 
| Comparison On Different Types | All, Dump, ChangedBehavior | 2 | 2 | Minor | 0 % | 
| Deprecated PHP Functions | Analyze, All, CI-checks, CE | 5 | 3 | Major | 23 % | 
| Don't Pollute Global Space | Analyze, All | 17 | 9 | Minor | 0 % | 
| Exit Without Argument | Analyze, All, ChangedBehavior | 54 | 33 | Minor | 0 % | 
| False To Array Conversion | Analyze, All, LintButWontExec, CompatibilityPHP81, CompatibilityPHP82, ChangedBehavior | 133 | 16 | Minor | 0 % | 
| Group Use Declaration | Appinfo, CompatibilityPHP54, CompatibilityPHP55, CompatibilityPHP56, CompatibilityPHP53, All, CE, ChangedBehavior | 1 | 1 | Minor | 5 % | 
| Include Variables | All, Dump | 1 | 1 | Minor | 0 % | 
| Wrong Parameter Type | Analyze, OneFile, All, Simple, CI-checks, CE, ChangedBehavior | 46 | 18 | Major | 76 % | 
| Is_A() With String | Analyze, All, Simple, Rector, CI-checks, CE, ChangedBehavior | 4 | 3 | Minor | 0 % | 
| Use === null | Analyze, OneFile, All, RadwellCodes, Simple, php-cs-fixable, CI-checks, CE, ChangedBehavior | 1 | 1 | Minor | 53 % | 
| List With Keys | Appinfo, CompatibilityPHP54, CompatibilityPHP55, CompatibilityPHP56, Appcontent, CompatibilityPHP53, CompatibilityPHP70, All, CE, ChangedBehavior | 2 | 1 | Major | 34 % | 
| Logical Should Use Symbolic Operators | Analyze, OneFile, ClearPHP, All, Simple, Suggestions, Level 2, Top10, php-cs-fixable, CI-checks, CE | 1 | 1 | Minor | 43 % | 
| Possible Missing Subpattern | Analyze, All, Top10, CI-checks, CE, ChangedBehavior | 1 | 1 | Minor | 45 % | 
| PHP Native Class Type Compatibility | Analyze, All, CompatibilityPHP81, ChangedBehavior | 22 | 5 | Major | 0 % | 
| No Class In Global | Analyze, All, CI-checks, CE, ChangedBehavior | 7 | 5 | Minor | 77 % | 
| No Null For Native PHP Functions | Analyze, All, CompatibilityPHP81, Deprecated, ChangedBehavior | 80 | 38 | Minor | 0 % | 
| Php 8.0 Only TypeHints | Appinfo, CompatibilityPHP56, CompatibilityPHP70, CompatibilityPHP71, CompatibilityPHP72, All, CompatibilityPHP73, CompatibilityPHP74, CE, ChangedBehavior | 20 | 9 | Minor | 0 % | 
| Scalar Are Not Arrays | Analyze, All, CompatibilityPHP74, CI-checks, CE, ChangedBehavior | 9 | 5 | Minor | 0 % | 
| Should Use Coalesce | Analyze, All, Simple, Suggestions, Level 3, CI-checks, CE, ChangedBehavior | 9 | 6 | Major | 71 % | 
| Too Many Native Calls | Analyze, All, ChangedBehavior | 1 | 1 | Minor | 49 % | 
| Typed Property Usage | Appinfo, CompatibilityPHP54, CompatibilityPHP55, CompatibilityPHP56, CompatibilityPHP53, CompatibilityPHP70, CompatibilityPHP71, CompatibilityPHP72, All, CompatibilityPHP73, CE, ChangedBehavior | 161 | 62 | Minor | 6 % | 
| Use Nullable Type | Appinfo, CompatibilityPHP54, CompatibilityPHP55, CompatibilityPHP56, CompatibilityPHP53, CompatibilityPHP70, All, CE, ChangedBehavior | 41 | 10 | Major | 90 % | 
| Use PHP Object API | Analyze, ClearPHP, All, Simple, CI-checks, CE, ChangedBehavior | 2 | 1 | Minor | 27 % | 
| Avoid Using stdClass | Analyze, OneFile, All, Simple, Level 4 | 3 | 2 | Minor | 46 % | 
| Wrong Type For Native PHP Function | Analyze, All, CI-checks, CE, ChangedBehavior | 96 | 50 | Minor | 0 % | 
| Always Anchor Regex | Security, All, ChangedBehavior | 50 | 15 | Major | 65 % | 
| Avoid Those Hash Functions | Security, All, ChangedBehavior | 39 | 28 | Major | 62 % | 
| Check Crypto Key Length | Security, All, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| Safe Curl Options | Security, All, ChangedBehavior | 3 | 1 | Major | 15 % | 
| Direct Injection | Security, All, ChangedBehavior | 15 | 7 | Major | 51 % | 
| Don't Echo Error | Analyze, Security, All, Simple, Level 1, CI-checks, CE, ChangedBehavior | 2 | 2 | Critical | 35 % | 
| Incompatible Types With Incoming Values | Security, All, ChangedBehavior | 28 | 25 | Minor | 0 % | 
| Indirect Injection | Security, All, ChangedBehavior | 12 | 10 | Critical | 42 % | 
| Keep Files Access Restricted | Security, All, ChangedBehavior | 6 | 2 | Minor | 0 % | 
| Mkdir Default | Security, All, ChangedBehavior | 6 | 2 | Major | 37 % | 
| No Net For Xml Load | Security, All, ChangedBehavior | 11 | 7 | Major | 51 % | 
| Avoid sleep()/usleep() | Security, All, ChangedBehavior | 2 | 2 | Minor | 41 % | 
| Safe HTTP Headers | Security, All, ChangedBehavior | 6 | 6 | Major | 5 % | 
| Unserialize Second Arg | Security, All, ChangedBehavior | 6 | 4 | Critical | 50 % | 
| Altering Foreach Without Reference | Analyze, ClearPHP, All, Simple, Level 1, CI-checks, CE | 3 | 3 | Major | 56 % | 
| Comparison Is Always The Same | Analyze, All, ChangedBehavior | 6 | 5 | Minor | 0 % | 
| array_merge() With One Arg | Analyze, All | 4 | 1 | Minor | 0 % | 
| Bail Out Early | Analyze, OneFile, All, Simple, Level 4, ChangedBehavior | 122 | 65 | Minor | 64 % | 
| Strict Comparison With Booleans | Analyze, All, Simple, Suggestions, Level 2, CI-checks, CE, ChangedBehavior | 94 | 45 | Minor | 77 % | 
| Buried Assignation | Analyze, All, ChangedBehavior | 37 | 24 | Minor | 84 % | 
| Check All Types | Analyze, All, ChangedBehavior | 25 | 17 | Major | 69 % | 
| Check Division By Zero | Analyze, All, ChangedBehavior | 5 | 3 | Minor | 0 % | 
| Check JSON | Analyze, All, CI-checks, CE | 64 | 40 | Major | 65 % | 
| Common Alternatives | Analyze, All, Simple, ChangedBehavior | 91 | 37 | Major | 80 % | 
| Concat Empty String | Analyze, OneFile, All | 8 | 4 | Minor | 0 % | 
| Could Be Else | Analyze, All, ChangedBehavior | 5 | 5 | Minor | 49 % | 
| Could Use __DIR__ | Analyze, All, Simple, Suggestions, Level 3, php-cs-fixable, CI-checks, CE, ChangedBehavior | 51 | 33 | Major | 56 % | 
| Could Use Short Assignation | Analyze, Performances, OneFile, All, Simple, Rector, CI-checks, CE, ChangedBehavior | 2 | 2 | Minor | 63 % | 
| Don't Change The Blind Var | Analyze, All, ChangedBehavior | 28 | 17 | Minor | 73 % | 
| Don't Reuse Foreach Source | Analyze, All, ChangedBehavior | 14 | 8 | Minor | 0 % | 
| Double Assignation | Analyze, All, ChangedBehavior | 5 | 4 | Major | 59 % | 
| Double Checks | Analyze, All, ChangedBehavior | 2 | 2 | Minor | 0 % | 
| Double Instructions | Analyze, All, Simple, ChangedBehavior | 2 | 2 | Minor | 57 % | 
| Drop Else After Return | Analyze, OneFile, All, Simple, Suggestions, Level 4, CI-checks, CE, ChangedBehavior | 14 | 12 | Minor | 70 % | 
| Echo With Concat | Analyze, Performances, All, Simple, Suggestions, ChangedBehavior | 75 | 42 | Minor | 60 % | 
| Else If Versus Elseif | Analyze, All, Simple, php-cs-fixable, Rector, CI-checks, CE | 93 | 54 | Minor | 66 % | 
| Empty Blocks | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 22 | 18 | Minor | 51 % | 
| Empty Instructions | Analyze, Dead code, All, Simple, ChangedBehavior | 75 | 43 | Minor | 57 % | 
| Empty Loop | Analyze, All, ChangedBehavior | 1 | 1 | Major | 0 % | 
| Empty Try Catch | Analyze, All, Level 3 | 7 | 4 | Minor | 49 % | 
| Exit() Usage | Analyze, Appinfo, OneFile, ClearPHP, All, CI-checks, CE, ChangedBehavior | 59 | 33 | Major | 61 % | 
| Switch Fallthrough | Inventory, Security, All, Stats, ChangedBehavior | 1 | 1 | Minor | 39 % | 
| foreach() On Object | Analyze, All | 41 | 15 | Minor | 0 % | 
| Global Usage | Analyze, Appinfo, ClearPHP, All, CE, ChangedBehavior | 12 | 7 | Minor | 52 % | 
| Htmlentities Calls | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 142 | 63 | Major | 40 % | 
| Htmlentities Using Default Flag | Analyze, All, Simple, CI-checks, ChangedBehavior | 146 | 66 | Minor | 0 % | 
| Identical Case In Switch | Analyze, All, ChangedBehavior | 9 | 2 | Minor | 0 % | 
| Identical Consecutive Expression | Analyze, All, ChangedBehavior | 3 | 3 | Minor | 59 % | 
| If With Same Conditions | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 10 | 6 | Major | 47 % | 
| Iffectations | Analyze, All, ChangedBehavior | 457 | 154 | Minor | 80 % | 
| Indices Are Int Or String | Analyze, OneFile, All, Simple, CI-checks, CE, ChangedBehavior | 179 | 31 | Major | 20 % | 
| Infinite Recursion | Analyze, All, ChangedBehavior | 3 | 2 | Major | 0 % | 
| Invalid Cast | Analyze, All, LintButWontExec, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| Long Arguments | Analyze, All, ChangedBehavior | 65 | 48 | Minor | 68 % | 
| Max Level Of Nesting | Analyze, All, ChangedBehavior | 51 | 32 | Minor | 0 % | 
| Merge If Then | Analyze, All, CI-checks, CE, ChangedBehavior | 277 | 113 | Minor | 0 % | 
| Mismatched Ternary Alternatives | Analyze, All, Suggestions, Level 4, ChangedBehavior | 1 | 1 | Major | 64 % | 
| Missing Assignation In Branches | Analyze, All, ChangedBehavior | 145 | 79 | Minor | 0 % | 
| Maybe Missing New | Analyze, All, ChangedBehavior | 2 | 1 | Critical | 57 % | 
| Mixed Concat And Interpolation | Analyze, Coding Conventions, All | 10 | 8 | Minor | 45 % | 
| Modernize Empty With Expression | Analyze, OneFile, All, Simple, ChangedBehavior | 213 | 101 | Minor | 63 % | 
| Multiples Identical Case | Analyze, OneFile, ClearPHP, All, Simple, Level 1, Rector, CI-checks, CE, ChangedBehavior | 1 | 1 | Minor | 29 % | 
| Multiple Type Variable | Analyze, All, Level 4, ChangedBehavior | 14 | 11 | Minor | 58 % | 
| Nested Ifthen | Analyze, All, RadwellCodes, ChangedBehavior | 394 | 119 | Major | 84 % | 
| Don't Change Incomings | Analyze, All, ChangedBehavior | 9 | 4 | Minor | 44 % | 
| No Choice | Analyze, All, Simple, Level 2, Top10, Rector, CI-checks, CE, ChangedBehavior | 1 | 1 | Major | 42 % | 
| No Direct Usage Of Returned Value | Analyze, All, Simple, ChangedBehavior | 2 | 2 | Major | 39 % | 
| No Need For Else | Analyze, All, ChangedBehavior | 16 | 13 | Minor | 74 % | 
| No Parenthesis For Language Construct | Analyze, ClearPHP, All, RadwellCodes, Simple, Suggestions, Level 2, CI-checks, CE, ChangedBehavior | 7 | 5 | Minor | 62 % | 
| Avoid Substr() One | Analyze, Performances, CompatibilityPHP71, All, Simple, Suggestions, Level 2, Top10, CI-checks, CE, ChangedBehavior | 26 | 16 | Minor | 58 % | 
| Variable Is Not A Condition | Analyze, All, ChangedBehavior | 162 | 78 | Minor | 93 % | 
| Non Integer Nor String As Index | Analyze, All, ChangedBehavior | 4 | 1 | Minor | 0 % | 
| @ Operator | Analyze, Appinfo, Performances, ClearPHP, All, CI-checks, CE, ChangedBehavior | 76 | 24 | Minor | 65 % | 
| Objects Don't Need References | Analyze, OneFile, ClearPHP, All, Simple, Level 2, Top10, CI-checks, CE, ChangedBehavior | 1 | 1 | Minor | 40 % | 
| include_once() Usage | Analyze, Appinfo, All, CE, ChangedBehavior | 11 | 9 | Minor | 73 % | 
| Several Instructions On The Same Line | Analyze, All, ChangedBehavior | 224 | 132 | Major | 56 % | 
| Only Variable Returned By Reference | Analyze, All, Simple | 1 | 1 | Major | 3 % | 
| PHP7 Dirname | CompatibilityPHP54, CompatibilityPHP55, CompatibilityPHP56, CompatibilityPHP53, All, Suggestions, php-cs-fixable, ChangedBehavior | 21 | 10 | Minor | 44 % | 
| Print And Die | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 22 | 14 | Minor | 32 % | 
| Random Without Try | Security, All, ChangedBehavior | 3 | 3 | Critical | 30 % | 
| Repeated print() | Analyze, All, Simple, Suggestions, Level 3, Top10, CI-checks, CE, ChangedBehavior | 14 | 12 | Major | 50 % | 
| Repeated Regex | Analyze, All, Level 1, CI-checks, CE, ChangedBehavior | 24 | 17 | Minor | 47 % | 
| Return True False | Analyze, All, Simple, Level 1, CI-checks, CE, ChangedBehavior | 11 | 10 | Major | 46 % | 
| Same Conditions In Condition | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 13 | 10 | Critical | 55 % | 
| Should Chain Exception | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 1 | 1 | Minor | 39 % | 
| Should Use Ternary Operator | Analyze, OneFile, All, Simple, CI-checks, CE, ChangedBehavior | 139 | 82 | Minor | 86 % | 
| Preprocessable | Analyze, All, Rector, ChangedBehavior | 87 | 38 | Minor | 85 % | 
| Static Inclusions | Analyze, All, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| Static Loop | Analyze, All, Simple, Level 4, ChangedBehavior | 12 | 6 | Minor | 67 % | 
| Strpos()-like Comparison | Analyze, PHP recommendations, ClearPHP, All, Simple, Level 2, Top10, CI-checks, CE, ChangedBehavior | 13 | 11 | Major | 54 % | 
| Suspicious Comparison | Analyze, All, Level 3, ChangedBehavior | 3 | 2 | Major | 39 % | 
| Switch Without Default | Analyze, ClearPHP, All, Simple, CI-checks, CE, ChangedBehavior | 25 | 17 | Major | 69 % | 
| Test Then Cast | Analyze, All, ChangedBehavior | 1 | 1 | Major | 34 % | 
| Timestamp Difference | Analyze, All, Simple, Level 3, CI-checks, CE, ChangedBehavior | 10 | 8 | Major | 49 % | 
| Unchecked Resources | Analyze, ClearPHP, All, Simple, Level 2, CI-checks, CE, ChangedBehavior | 3 | 1 | Major | 50 % | 
| Unconditional Break In Loop | Analyze, All, Level 3, CI-checks, CE | 12 | 6 | Major | 48 % | 
| Unpreprocessed Values | Analyze, Performances, OneFile, ClearPHP, All, Simple, ChangedBehavior | 1 | 1 | Minor | 30 % | 
| Unreachable Code | Dead code, OneFile, ClearPHP, All, Simple, Suggestions, Level 3, Unused, ChangedBehavior | 9 | 7 | Major | 61 % | 
| Use Constant Instead Of Function | Analyze, PHP recommendations, All, php-cs-fixable, CI-checks, CE, ChangedBehavior | 51 | 33 | Minor | 61 % | 
| Use Positive Condition | Analyze, OneFile, All, Simple, ChangedBehavior | 171 | 107 | Minor | 82 % | 
| Use Same Types For Comparisons | Analyze, All | 2 | 2 | Minor | 0 % | 
| Use Variable Created Inside Loop | Dead code, All, ChangedBehavior | 43 | 24 | Minor | 0 % | 
| Useless Type Casting | Analyze, PHP recommendations, OneFile, All, RadwellCodes, Simple, Level 4, CI-checks, CE, ChangedBehavior | 10 | 7 | Minor | 47 % | 
| Useless Check Before Foreach | Analyze, OneFile, All, Simple, Level 1, CI-checks, CE | 2 | 2 | Minor | 35 % | 
| Useless Coalesce | Analyze, All, ChangedBehavior | 1 | 1 | Minor | 0 % | 
| Useless Instructions | Analyze, OneFile, ClearPHP, All, Simple, Level 1, CI-checks, CE, ChangedBehavior | 11 | 7 | Minor | 63 % | 
| Useless Null Coalesce | Analyze, All, Typehints, ChangedBehavior | 5 | 1 | Minor | 0 % | 
| Useless Parenthesis | Analyze, All, Simple, CI-checks, CE, ChangedBehavior | 55 | 36 | Minor | 81 % | 
| Useless Switch | Analyze, All, Simple, ChangedBehavior | 3 | 3 | Major | 32 % | 
| Useless Unset | Analyze, OneFile, ClearPHP, All, Simple, Level 2, CI-checks, CE, ChangedBehavior | 1 | 1 | Major | 42 % | 
| var_dump()... Usage | Analyze, Security, ClearPHP, All, CI-checks, CE, ChangedBehavior | 6 | 4 | Critical | 42 % | 
| Dependant Trait | Analyze, All, Level 3, ChangedBehavior | 4 | 4 | Minor | 28 % | 
| Trait Is Not A Type | Analyze, All, ClassReview, Typehints | 1 | 1 | Minor | 0 % | 
| One Variable String | Analyze, All, RadwellCodes, Simple, CI-checks, CE, ChangedBehavior | 4 | 3 | Minor | 33 % | 
| Should Typecast | Analyze, OneFile, All, Simple, Rector, CI-checks, CE, ChangedBehavior | 15 | 9 | Minor | 49 % | 
| String May Hold A Variable | Analyze, All, Simple, ChangedBehavior | 48 | 7 | Minor | 59 % | 
| Missing Some Returntype | Analyze, All, Typehints, CI-checks, CE, ChangedBehavior | 21 | 15 | Minor | 0 % | 
| StandaloneType True False Null | Analyze, Appcontent, All, ChangedBehavior | 28 | 7 | Minor | 0 % | 
| Wrong Type With Default | Analyze, All, LintButWontExec, ClassReview, ChangedBehavior | 15 | 5 | Minor | 0 % | 
| Assigned Twice | Analyze, All, ChangedBehavior | 312 | 68 | Minor | 79 % | 
| Overwritten Literals | Analyze, All, ChangedBehavior | 336 | 70 | Major | 79 % | 
| Recycled Variables | Analyze, All | 8 | 3 | Minor | 0 % | 
| Undefined Variable | Analyze, All, CI-checks, CE, Undefined | 1098 | 203 | Minor | 77 % | 
| Used Once Variables | Analyze, OneFile, All, Simple, Top10, ChangedBehavior | 23 | 18 | Minor | 74 % | 
| Used Once Variables (In Scope) | Analyze, OneFile, ClearPHP, All, Simple, Level 4, CE, ChangedBehavior | 262 | 143 | Minor | 95 % | 
| Written Only Variables | Analyze, OneFile, All, Simple, Unused, ChangedBehavior | 102 | 57 | Minor | 87 % |