SAST for PHP
How SAST analyzes PHP source code, why framework and request-handling context matter, and how teams should validate and remediate PHP security findings.
Primary question: How should organizations apply SAST to PHP applications?
Direct answer
Analyze PHP data flows with the framework and request-handling context preserved
PHP SAST should analyze the controlled application source together with the framework, routing, configuration, and dependency context needed to follow data from request inputs to security-sensitive operations. [owasp-source-code-analysis][php-security]
Teams should validate reported paths against actual sanitization, encoding, authorization, framework behavior, and deployment configuration before deciding remediation priority. [nist-ssdf]
Definitions
PHP SAST
Static application security testing applied to PHP source code and supported code-level data flows without executing the application.
Source
A point where data enters a program, such as an HTTP parameter, request body, header, cookie, file, message, or external service response.
Sink
A security-sensitive operation where untrusted or improperly handled data may create risk, such as a database query, command execution, file operation, template output, or redirect.
The engineering problem
PHP applications often combine framework code, templates, configuration, dependencies, and application logic that affect how request data reaches sensitive operations. [php-security]
Scanning only selected files can omit routes, shared helpers, middleware, and framework behavior needed to interpret a reported data flow.
Runtime server configuration and deployed access-control behavior are not fully represented by source-code analysis alone. [owasp-source-code-analysis]
Security controls
Each control inspects a different artifact and produces evidence for an engineering decision.
PHP source-code analysis
PHP Static Application Security Testing- Artifact
- PHP application source, templates and configuration supported by the analyzer, and code-level data flows.
- Risk
- Security weaknesses in input handling, output handling, authorization, file access, database access, and other application logic.
- Output
- Findings with PHP source locations, weakness classifications, and available source-to-sink context.
Evidence: DerScanner analysis modules and supported languagesDerScanner static analysis documentation
PHP finding validation
Security Finding Validation- Artifact
- SAST finding, framework behavior, sanitization and encoding controls, authorization rules, and deployment context.
- Risk
- Accepting or dismissing a PHP finding without verifying the complete application path.
- Output
- Reviewed disposition and evidence-backed remediation decision.
Verification workflow
- Identify PHP repositories, frameworks, entry points, templates, configuration, and dependency boundaries.
- Select the controlled source revision and intended analysis scope.
- Run a PHP-capable SAST analyzer against the complete intended application source.
- Review reported inputs, transformations, security controls, and sensitive operations.
- Validate findings against framework behavior and deployed security requirements.
- Remediate confirmed weaknesses using context-appropriate controls.
- Re-run SAST and complement it with runtime and configuration testing.
DerScanner · Enterprise
Relationship to DerScanner
DerScanner lists PHP among the languages supported by its static analysis modules.
DerScanner documents PHP support in its Matcher analysis module and supports PHP selection in command-line scan parameters. [derscanner-supported-languages][derscanner-cli]
Limits of verification
- PHP language support does not imply complete coverage of every framework, template engine, extension, or vulnerability pattern.
- Dynamic language features and unavailable runtime context can limit static analysis.
- Web-server, PHP runtime, container, and deployment configuration require separate verification.
- Findings can include false positives and false negatives.
- SAST does not replace authenticated DAST, manual review, or security testing of the running application.
Related knowledge
What Is SAST?
Parent definition of static application security testing
Relationship: related-toAuthenticated DAST Testing
Runtime testing of application paths that require authentication
Relationship: related-toCombining SAST and DAST
Combining source-level and runtime evidence for web applications
Relationship: related-toCanonical terms used: PHP SAST; Static Application Security Testing; PHP source-code analysis; source-to-sink analysis; web application security.
Evidence and references
- PHP Manual — SecurityThe PHP project documents security considerations for deployed PHP applications and handling external data.
php-security - NIST Secure Software Development FrameworkSecure development includes code analysis, vulnerability remediation, and retained evidence.
nist-ssdf - OWASP Source Code Analysis ToolsStatic source-code analysis can follow selected code paths without executing the application and has context-dependent limitations.
owasp-source-code-analysis - DerScanner analysis modules and supported languagesDerScanner documents PHP support in its Matcher analysis module.
derscanner-supported-languages - DerScanner static analysis documentationDerScanner lists PHP among its supported static-analysis languages.
derscanner-sast - DerScanner CLI scan documentationDerScanner documents PHP as a selectable language in command-line scan parameters.
derscanner-cli
Analyze PHP application code