← All results

non-empty-uppercase-string

Group: Advanced PHPDoc types · Category: ecosystem · File: phpdoc_advanced_fallback_non_empty_uppercase_string.php

The intersection of two refinements: at least one character, and unchanged by strtoupper(). The halves fail independently, so '' is rejected only by the length half and 'abc' only by the case half — an analyzer can model one and miss the other. Analyzers that model neither fall back to plain string and accept both. References: - PHPStan TypeNodeResolver non-empty-uppercase-string resolves to string&AccessoryNonEmptyStringType&AccessoryUppercaseStringType

Analyzer results

AnalyzerVersionResultDiagnostics
phan 6.0.7Phan 6.0.7 php-ast version 1.1.3 PHP version used to run Phan: 8.5.9 Unrecognized 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:21: Saw a token Phan may have failed to parse after '* @return non-empty-uppercase-string': after non, saw '-' [PhanUnextractableAnnotationSuffix]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:23: Return type of returnsNonEmptyUppercaseString() is undeclared type \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non [PhanUndeclaredTypeReturnType]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:25: Returning 'ABC' of type string but returnsNonEmptyUppercaseString() is declared to return \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non (no real type) (the inferred real return type has nothing in common with the declared phpdoc return type) [PhanTypeMismatchReturnProbablyReal]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:33: Saw possibly unextractable annotation for a fragment of comment '* @param non-empty-uppercase-string $value': after non, did not see an element name (will guess based on comment order) [PhanUnextractableAnnotationElementName]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:33: Saw a token Phan may have failed to parse after '* @param non-empty-uppercase-string $value': after non, saw '-' [PhanUnextractableAnnotationSuffix]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:35: Parameter $value has undeclared type \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non [PhanUndeclaredTypeParameter]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:40: Argument 1 ($value) is returnsNonEmptyUppercaseString() of type \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non but \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsString() takes string defined at /Users/megurine/repo/php/php-typing-conformance/conformance/tests/phpdoc_advanced_fallback_non_empty_uppercase_string.php:28 [PhanTypeMismatchArgument]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:43: Argument 1 ($value) is 'ABC' of type string but \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString() takes \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non (no real type) defined at /Users/megurine/repo/php/php-typing-conformance/conformance/tests/phpdoc_advanced_fallback_non_empty_uppercase_string.php:35 (the inferred real argument type has nothing in common with the parameter's phpdoc type) [PhanTypeMismatchArgumentProbablyReal]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:44: Argument 1 ($value) is '123' of type string but \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString() takes \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non (no real type) defined at /Users/megurine/repo/php/php-typing-conformance/conformance/tests/phpdoc_advanced_fallback_non_empty_uppercase_string.php:35 (the inferred real argument type has nothing in common with the parameter's phpdoc type) [PhanTypeMismatchArgumentProbablyReal]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:47: Argument 1 ($value) is '' of type string but \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString() takes \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non (no real type) defined at /Users/megurine/repo/php/php-typing-conformance/conformance/tests/phpdoc_advanced_fallback_non_empty_uppercase_string.php:35 (the inferred real argument type has nothing in common with the parameter's phpdoc type) [PhanTypeMismatchArgumentProbablyReal]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:50: Argument 1 ($value) is 'abc' of type string but \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString() takes \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non (no real type) defined at /Users/megurine/repo/php/php-typing-conformance/conformance/tests/phpdoc_advanced_fallback_non_empty_uppercase_string.php:35 (the inferred real argument type has nothing in common with the parameter's phpdoc type) [PhanTypeMismatchArgumentProbablyReal]
  • Recognition: spelling not resolved — reported on declaration line(s) 21, 23, 33, 35
  • Enforcement: 2/2 of the expected violations reported — incidental, since the spelling was not resolved
Expectation diff
Line 25: Expected valid value to be accepted, got ["Returning 'ABC' of type string but returnsNonEmptyUppercaseString() is declared to return \\Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\non (no real type) (the inferred real return type has nothing in common with the declared phpdoc return type) [PhanTypeMismatchReturnProbablyReal]"]
Line 40: Expected valid value to be accepted, got ["Argument 1 ($value) is returnsNonEmptyUppercaseString() of type \\Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\non but \\Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\acceptsString() takes string defined at /Users/megurine/repo/php/php-typing-conformance/conformance/tests/phpdoc_advanced_fallback_non_empty_uppercase_string.php:28 [PhanTypeMismatchArgument]"]
Line 43: Expected valid value to be accepted, got ["Argument 1 ($value) is 'ABC' of type string but \\Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\acceptsNonEmptyUppercaseString() takes \\Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\non (no real type) defined at /Users/megurine/repo/php/php-typing-conformance/conformance/tests/phpdoc_advanced_fallback_non_empty_uppercase_string.php:35 (the inferred real argument type has nothing in common with the parameter's phpdoc type) [PhanTypeMismatchArgumentProbablyReal]"]
Line 44: Expected valid value to be accepted, got ["Argument 1 ($value) is '123' of type string but \\Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\acceptsNonEmptyUppercaseString() takes \\Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\non (no real type) defined at /Users/megurine/repo/php/php-typing-conformance/conformance/tests/phpdoc_advanced_fallback_non_empty_uppercase_string.php:35 (the inferred real argument type has nothing in common with the parameter's phpdoc type) [PhanTypeMismatchArgumentProbablyReal]"]
phpstan 2.2.8PHPStan - PHP Static Analysis Tool 2.2.8 Enforced reported Lv.5+ 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:47: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString expects non-empty-string&uppercase-string, '' given. [identifier=argument.type] [reported-from-level=5]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:50: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString expects non-empty-string&uppercase-string, 'abc' given. [identifier=argument.type] [reported-from-level=5]
With strict-rules
phpdoc_advanced_fallback_non_empty_uppercase_string.php:47: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString expects non-empty-string&uppercase-string, '' given. [identifier=argument.type]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:50: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString expects non-empty-string&uppercase-string, 'abc' given. [identifier=argument.type]
  • Recognition: spelling resolved
  • Enforcement: 2/2 of the expected violations reported
psalm 6.16.1Psalm 6.16.1@f1f5de594dc76faf8784e02d3dc4716c91c6f6ac
next: 7.0.0-beta19		 Unrecognized (pzoom≠) 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:23: Unrecognized type Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non-empty-uppercase-string in docblock for Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\returnsNonEmptyUppercaseString [InvalidDocblock]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:23: Method Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\returnsNonEmptyUppercaseString does not have a return type, expecting 'ABC' [MissingReturnType]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:33: Unrecognized type Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non-empty-uppercase-string in docblock for Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString [InvalidDocblock]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:35: Parameter $value has no provided type [MissingParamType]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:40: Argument 1 of Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsString cannot be mixed, expecting string [MixedArgument]
pzoom (Psalm port)
phpdoc_advanced_fallback_non_empty_uppercase_string.php:23: Invalid return docblock type [InvalidDocblock]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:23: Function Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\returnsNonEmptyUppercaseString does not have a return type [MissingReturnType]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:35: Invalid docblock type [InvalidDocblock]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:35: Argument $value of Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString does not have a type [MissingParamType]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:40: Argument 1 of acceptsString cannot be mixed, expecting string [MixedArgument]
  • Recognition: spelling not resolved — reported on declaration line(s) 23, 33, 35
  • Enforcement: 0/2 of the expected violations reported — incidental, since the spelling was not resolved
Expectation diff
Line 40: Expected valid value to be accepted, got ["Argument 1 of Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\acceptsString cannot be mixed, expecting string [MixedArgument]"]
mago 1.46.0mago 1.46.0 Enforced 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:47: Invalid argument type for argument #1 of `Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString`: expected `uppercase-non-empty-string`, but found `string('')`. [invalid-argument]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:50: Invalid argument type for argument #1 of `Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString`: expected `uppercase-non-empty-string`, but found `string('abc')`. [invalid-argument]
  • Recognition: spelling resolved
  • Enforcement: 2/2 of the expected violations reported
mir 0.70.1mir 0.70.1 Widened to string

No diagnostics reported.

  • Recognition: spelling resolved
  • Enforcement: 0/2 of the expected violations reported
phpantom 0.9.0phpantom_lsp 0.9.0 Not enforced

No diagnostics reported.

  • Recognition: spelling resolved
  • Enforcement: 0/2 of the expected violations reported
intelephense 1.18.5intelephense 1.18.5 Incidental (0/2) 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:40: Expected type 'string'. Found 'Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non-empty-uppercase-string'. [P1006]
  • Recognition: spelling resolved
  • Enforcement: 0/2 of the expected violations reported — incidental, since values the type admits were also rejected on line(s) 40
Expectation diff
Line 40: Expected valid value to be accepted, got ["Expected type 'string'. Found 'Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\non-empty-uppercase-string'. [P1006]"]
phpy 0.2.0phpy 0.2.0 Not enforced

No diagnostics reported.

  • Recognition: spelling resolved
  • Enforcement: 0/2 of the expected violations reported
qodana 262.8665.325Qodana 262.8665.325 Unrecognized 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:21: Return type in PHPDoc does not match the actual return type [PhpReturnDocTypeMismatchInspection]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:21: Undefined class 'non-empty-uppercase-string' [PhpUndefinedClassInspection]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:25: Return value type is not compatible with declared [PhpIncompatibleReturnTypeInspection]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:33: Undefined class 'non-empty-uppercase-string' [PhpUndefinedClassInspection]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:43: Parameter ''ABC'' type is not compatible with declaration [PhpParamsInspection]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:44: Parameter ''123'' type is not compatible with declaration [PhpParamsInspection]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:47: Parameter '''' type is not compatible with declaration [PhpParamsInspection]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:50: Parameter ''abc'' type is not compatible with declaration [PhpParamsInspection]
  • Recognition: spelling not resolved — reported on declaration line(s) 21, 33
  • Enforcement: 2/2 of the expected violations reported — incidental, since the spelling was not resolved
Expectation diff
Line 25: Expected valid value to be accepted, got ["Return value type is not compatible with declared [PhpIncompatibleReturnTypeInspection]"]
Line 43: Expected valid value to be accepted, got ["Parameter ''ABC'' type is not compatible with declaration [PhpParamsInspection]"]
Line 44: Expected valid value to be accepted, got ["Parameter ''123'' type is not compatible with declaration [PhpParamsInspection]"]
noverify 0.5.5NoVerify, version 0.5.5: built on: 2025.04.22 14:36:46 OS: r-kuchinskas arm64 Commit: 4774b82f8adc53fbef38f95e97af4b953b4d1529 Unrecognized ⚠ 1 false positive 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:12: Class or interface named \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non-empty-uppercase-string does not exist [undefinedClass]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:33: Class or interface named \Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non-empty-uppercase-string does not exist [undefinedClass]
  • Recognition: spelling not resolved — reported on declaration line(s) 33
  • Enforcement: 0/2 of the expected violations reported — incidental, since the spelling was not resolved
  • False positives: line(s) 12
Expectation diff
Line 12: Unexpected errors ["Class or interface named \\Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\non-empty-uppercase-string does not exist [undefinedClass]"]
steins 0.1.5steins 0.1.5 (2026-08-12 revision 39b4cc1) Enforced 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:47: argument "" to acceptsNonEmptyUppercaseString() violates declared @param non-empty-uppercase-string $value — declared contract violation [phpdoc.param-mismatch]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:50: argument "abc" to acceptsNonEmptyUppercaseString() violates declared @param non-empty-uppercase-string $value — declared contract violation [phpdoc.param-mismatch]
  • Recognition: spelling resolved
  • Enforcement: 2/2 of the expected violations reported
phpstan-strict 2.2.8PHPStan - PHP Static Analysis Tool 2.2.8 Enforced 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:47: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString expects non-empty-string&uppercase-string, '' given. [identifier=argument.type]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:50: Parameter #1 $value of function Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString expects non-empty-string&uppercase-string, 'abc' given. [identifier=argument.type]
  • Recognition: spelling resolved
  • Enforcement: 2/2 of the expected violations reported
psalm-next 7.0.0-beta19Psalm 7.0.0-beta19@7e751c06a756fa64dc4c759c09fe4a173afcb433 Unrecognized 
phpdoc_advanced_fallback_non_empty_uppercase_string.php:23: Unrecognized type Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non-empty-uppercase-string in docblock for Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\returnsNonEmptyUppercaseString [InvalidDocblock]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:23: Method Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\returnsNonEmptyUppercaseString does not have a return type, expecting 'ABC' [MissingReturnType]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:33: Unrecognized type Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\non-empty-uppercase-string in docblock for Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsNonEmptyUppercaseString [InvalidDocblock]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:35: Parameter $value has no provided type [MissingParamType]
phpdoc_advanced_fallback_non_empty_uppercase_string.php:40: Argument 1 of Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString\acceptsString cannot be mixed, expecting string [MixedArgument]
  • Recognition: spelling not resolved — reported on declaration line(s) 23, 33, 35
  • Enforcement: 0/2 of the expected violations reported — incidental, since the spelling was not resolved
Expectation diff
Line 40: Expected valid value to be accepted, got ["Argument 1 of Conformance\\Tests\\PhpdocAdvancedFallbackNonEmptyUppercaseString\\acceptsString cannot be mixed, expecting string [MixedArgument]"]

Source

<?php

declare(strict_types=1);

namespace Conformance\Tests\PhpdocAdvancedFallbackNonEmptyUppercaseString;

/**
 * `non-empty-uppercase-string`
 *
 * The intersection of two refinements: at least one character, and unchanged by
 * `strtoupper()`. The halves fail independently, so `''` is rejected only by the
 * length half and `'abc'` only by the case half — an analyzer can model one and
 * miss the other. Analyzers that model neither fall back to plain `string` and
 * accept both.
 *
 * References:
 * - PHPStan TypeNodeResolver `non-empty-uppercase-string` resolves to string&AccessoryNonEmptyStringType&AccessoryUppercaseStringType
 */

/**
 * @return non-empty-uppercase-string
 */
function returnsNonEmptyUppercaseString() // T: non-empty-uppercase-string
{
    return 'ABC'; // V
}

function acceptsString(string $value): void
{
}

/**
 * @param non-empty-uppercase-string $value
 */
function acceptsNonEmptyUppercaseString($value): void // T: non-empty-uppercase-string
{
}

// A `non-empty-uppercase-string` value always satisfies a native `string` parameter.
acceptsString(returnsNonEmptyUppercaseString()); // V

// A non-empty string with nothing lowercase in it satisfies both halves.
acceptsNonEmptyUppercaseString('ABC'); // V
acceptsNonEmptyUppercaseString('123'); // V

// Uppercase, but empty.
acceptsNonEmptyUppercaseString(''); // E?: '' is not a non-empty-uppercase-string

// Non-empty, but not uppercase.
acceptsNonEmptyUppercaseString('abc'); // E?: 'abc' is not a non-empty-uppercase-string