Repository Analysis

Intervention/image

PHP Image Processing

8.3 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of Intervention/image, a PHP project with 14,351 GitHub stars. SynthScan v2.0 examined 52,906 lines of code across 637 source files, recording 378 pattern matches distributed across 1 syntactic category. The overall adjusted score of 8.3 places this repository in the Low AI signal band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

8.3
Adjusted Score
8.3
Raw Score
100%
Time Factor
2026-07-11
Last Push
14.4K
Stars
PHP
Language
52.9K
Lines of Code
637
Files
378
Pattern Hits
2026-07-14
Scan Date
0.00
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 0MEDIUM 0LOW 378

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 378 distinct pattern matches across 1 syntactic category. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Hyper-Verbose Identifiers378 hits · 442 pts
SeverityFileLineSnippetContext
LOWtests/GdTestCase.php35 public static function createTestImageTransparent(int $width, int $height): ImageCODE
LOWtests/Unit/DataUriTest.php34 public static function getSetMediaTypeDataProvider(): GeneratorCODE
LOWtests/Unit/DataUriTest.php192 public function testCreateStaticFactoryMinimal(): voidCODE
LOWtests/Unit/DataUriTest.php200 public function testCreateStaticFactoryWithMediaTypeEnum(): voidCODE
LOWtests/Unit/DataUriTest.php234 public function testDebugInfoWithoutMediaType(): voidCODE
LOWtests/Unit/EncodedImageTest.php21 public function testConstructorFromResource(): voidCODE
LOWtests/Unit/EncodedImageTest.php86 public function testDebugInfoWhenSizeThrows(): voidCODE
LOWtests/Unit/SizeTest.php36 public function testConstructorNegativeWidth(): voidCODE
LOWtests/Unit/SizeTest.php42 public function testConstructorNegativeHeight(): voidCODE
LOWtests/Unit/SizeTest.php48 public function testConstructorZeroDimensions(): voidCODE
LOWtests/Unit/SizeTest.php218 public function testMovePivotWithInvalidAlignmentFallsToDefault(): voidCODE
LOWtests/Unit/SizeTest.php244 public function testAlignPivotToBottomRight(): voidCODE
LOWtests/Unit/SizeTest.php343 public function testResizeDownDoesNotUpscale(): voidCODE
LOWtests/Unit/SizeTest.php375 public function testScaleDownDoesNotUpscale(): voidCODE
LOWtests/Unit/SizeTest.php407 public function testContainDownDoesNotUpscale(): voidCODE
LOWtests/Unit/SizeTest.php490 public function testScaleBothWidthAndHeight(): voidCODE
LOWtests/Unit/SizeTest.php498 public function testScaleDownBothWidthAndHeight(): voidCODE
LOWtests/Unit/FileExtensionTest.php148 public function testCreateFromMediaTypeString(): voidCODE
LOWtests/Unit/FileTest.php27 public function testConstructorFromString(): voidCODE
LOWtests/Unit/FileTest.php33 public function testConstructorFromResource(): voidCODE
LOWtests/Unit/FileTest.php78 public function testSaveDirectoryNotFound(): voidCODE
LOWtests/Unit/FileTest.php123 public function testConstructorInvalidType(): voidCODE
LOWtests/Unit/OriginTest.php42 public function testFileExtensionWithoutExtension(): voidCODE
LOWtests/Unit/OriginTest.php104 public function testDebugInfoWithoutFilePath(): voidCODE
LOWtests/Unit/ResolutionTest.php101 public function testPerInchWhenAlreadyInch(): voidCODE
LOWtests/Unit/ResolutionTest.php139 public function testNegativeXThrowsException(): voidCODE
LOWtests/Unit/ResolutionTest.php145 public function testNegativeYThrowsException(): voidCODE
LOWtests/Unit/AnimationFactoryTest.php37 public function testAnimationEmptyCallback(DriverInterface $driver): voidCODE
LOWtests/Unit/AnimationFactoryTest.php51 public function testAnimationEmptyFactory(DriverInterface $driver): voidCODE
LOWtests/Unit/AnimationFactoryTest.php75 public function testCallMagicMethodOnFrame(DriverInterface $driver): voidCODE
LOWtests/Unit/AnimationFactoryTest.php86 public function testCallMagicMethodWithInvalidMethod(): voidCODE
LOWtests/Unit/AnimationFactoryTest.php95 public function testBuildFrameWithColorSource(DriverInterface $driver): voidCODE
LOWtests/Unit/FormatTest.php355 public function testEncoderWithFilteredOptions(): voidCODE
LOWtests/Unit/ImageTest.php376 public function testDrawRectangleWithObject(): voidCODE
LOWtests/Unit/ImageTest.php573 public function testEncodeUsingFileExtension(): voidCODE
LOWtests/Unit/ImageTest.php610 public function testSaveWithoutPathAndNoOrigin(): voidCODE
LOWtests/Unit/ImageTest.php718 public function testSetColorspaceWithObject(): voidCODE
LOWtests/Unit/AlignmentTest.php52 public function testAlignHorizontallyFallback(): voidCODE
LOWtests/Unit/AlignmentTest.php57 public function testAlignVerticallyFallback(): voidCODE
LOWtests/Unit/AlignmentTest.php92 public static function alignHorizontallyDataProvider(): GeneratorCODE
LOWtests/Unit/AlignmentTest.php185 public static function alignVerticallyDataProvider(): GeneratorCODE
LOWtests/Unit/MediaTypeTest.php32 public function testCreateFromFileExtensionString(): voidCODE
LOWtests/Unit/MediaTypeTest.php198 public static function fileExtensionsDataProvider(): GeneratorCODE
LOWtests/Unit/InputHandlerTest.php35 public function testHandleDefaultDecoders(CODE
LOWtests/Unit/InputHandlerTest.php85 public function testUsingDecodersStaticFactory(): voidCODE
LOWtests/Unit/InputHandlerTest.php92 public function testUsingDecodersStaticFactoryWithDriver(): voidCODE
LOWtests/Unit/InputHandlerTest.php120 public function testHandleUnsupportedInput(): voidCODE
LOWtests/Unit/InputHandlerTest.php127 public function testSpecializeDecoderThrowsDriverException(): voidCODE
LOWtests/Unit/ImageManagerTest.php44 public function testConstructorUnkownClass(): voidCODE
LOWtests/Unit/ImageManagerTest.php50 public function testConstructorNonDriverClass(): voidCODE
LOWtests/Unit/ImageManagerTest.php58 public function testConstructorWithOptions(string|DriverInterface $driver): voidCODE
LOWtests/Unit/ImageManagerTest.php116 public function testCreateImageWithAnimationFactory(string|DriverInterface $driver): voidCODE
LOWtests/Unit/ConfigTest.php95 public function testSetOptionsInvalidProperty(): voidCODE
LOWtests/Unit/ConfigTest.php111 public function testSetOptionsWithSingleNonArrayPositionalArg(): voidCODE
LOWtests/Unit/Modifiers/TextModifierTest.php109 public function testTextColorTransparentWithStrokeThrowsException(): voidCODE
LOWtests/Unit/Modifiers/TextModifierTest.php163 public function testStrokeColorTransparentThrowsException(): voidCODE
LOWtests/Unit/Modifiers/ResizeModifierTest.php15 public function testConstructorThrowsWithNoArguments(): voidCODE
LOWtests/Unit/Modifiers/ResizeModifierTest.php27 public function testConstructorWithHeight(): voidCODE
LOWtests/Unit/Modifiers/ColorspaceModifierTest.php22 public function testTargetColorspaceWithInstance(): voidCODE
LOWtests/Unit/Modifiers/ColorspaceModifierTest.php54 public function testTargetColorspaceSrgba(): voidCODE
318 more matches not shown…