`PHPStan\dumpType()`

Group: Debug features · Category: extension · File: debug_phpstan_dump_type.php

PHPStan's type-inspection helper: calling it reports the inferred type of the argument as a diagnostic. Other analyzers typically treat it as an undefined function. References: - PHPStan troubleshooting / playground helpers: \PHPStan\dumpType()

Analyzer results

Analyzer	Version	Result	Diagnostics
phan	6.0.10Phan 6.0.10 php-ast version 1.1.3 PHP version used to run Phan: 8.5.11	Not enforced	debug_phpstan_dump_type.php:24: Call to undeclared function \PHPStan\dumpType() [PhanUndeclaredFunction] Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported
phpstan	2.3.1PHPStan - PHP Static Analysis Tool 2.3.1	Enforced reported Lv.0+	debug_phpstan_dump_type.php:24: Dumped type: int [reported-from-level=0] With strict-rules debug_phpstan_dump_type.php:24: Dumped type: int Recognition: spelling resolved Enforcement: 1/1 of the expected violations reported
psalm	6.20.0Psalm 6.20.0@804f03c0c183d149fcd4b8c7c0c9b3fbf836d34c next: 7.0.0-rc2	Not enforced	debug_phpstan_dump_type.php:24: Function PHPStan\dumpType does not exist, consider enabling the allFunctionsGlobal config option if scanning legacy codebases [UndefinedFunction] Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported
mago	1.57.0mago 1.57.0	Not enforced	debug_phpstan_dump_type.php:24: Function `PHPStan\dumpType` could not be found. [non-existent-function] Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported
mir	0.87.0mir 0.87.0	Not enforced	debug_phpstan_dump_type.php:24: UndefinedFunction: Function PHPStan\dumpType() is not defined [MIR0003] Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported
phpantom	0.11.1phpantom_lsp 0.11.1	Not enforced	debug_phpstan_dump_type.php:24: Function 'PHPStan\dumpType' not found [unknown_function] Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported
intelephense	1.18.5intelephense 1.18.5	Not enforced	debug_phpstan_dump_type.php:24: Undefined function 'PHPStan\dumpType'. [P1010] Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported
phpactor	2026.10.07.0Phpactor 2026.10.07.0	Enforced	debug_phpstan_dump_type.php:24: Function "dumpType" not found [unresolved_name] Recognition: spelling resolved Enforcement: 1/1 of the expected violations reported
phpy	1.0.19409phpy 1.0.19409	Not enforced	debug_phpstan_dump_type.php:24: Call to unknown function: 'PHPStan\dumpType' Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported
qodana	262.10968.76PhpStorm 262.10968.76	Not enforced	debug_phpstan_dump_type.php:24: Undefined namespace 'PHPStan' [PhpUndefinedNamespaceInspection] Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported
noverify	0.5.5NoVerify, version 0.5.5: built on: 2025.04.22 14:36:46 OS: r-kuchinskas arm64 Commit: 4774b82f8adc53fbef38f95e97af4b953b4d1529	Not enforced	debug_phpstan_dump_type.php:24: Call to undefined function \PHPStan\dumpType [undefinedFunction] Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported
steins	0.1.8steins 0.1.8 (2026-09-21 revision 76306a9)	Enforced	debug_phpstan_dump_type.php:24: dumped type: int [debug.type] Recognition: spelling resolved Enforcement: 1/1 of the expected violations reported
phpstan-strict	2.3.1PHPStan - PHP Static Analysis Tool 2.3.1	Enforced	debug_phpstan_dump_type.php:24: Dumped type: int Recognition: spelling resolved Enforcement: 1/1 of the expected violations reported
psalm-next	7.0.0-rc2Psalm 7.0.0-rc2@20339e3fe5b8d03bcd8061030eb2a83ad50e5783	Not enforced	debug_phpstan_dump_type.php:24: Function PHPStan\dumpType does not exist, consider enabling the allFunctionsGlobal config option if scanning legacy codebases [UndefinedFunction] Recognition: spelling resolved Enforcement: 0/1 of the expected violations reported

Source

<?php

declare(strict_types=1);

namespace Conformance\Tests\DebugPhpstanDumpType;

/**
 * Cross-tool handling of `PHPStan\dumpType()`.
 *
 * PHPStan's type-inspection helper: calling it reports the inferred type of
 * the argument as a diagnostic. Other analyzers typically treat it as an
 * undefined function.
 *
 * References:
 * - PHPStan troubleshooting / playground helpers: `\PHPStan\dumpType()`
 *
 * @conformance-kind debug
 */

function example(int|string $value): void // T: PHPStan\dumpType
{
    if (\is_int($value)) {
        // Narrowed to int: native dump reports that.
        \PHPStan\dumpType($value); // E?: reports the inferred type (int); foreign undefined-function is not enforcement
    }
}