Practical fault localization for dynamic web applications
Proceedings of the 32nd ACM/IEEE International Conference on Software Engineering - Volume 1
Variability-aware parsing in the presence of lexical macros and conditional compilation
Proceedings of the 2011 ACM international conference on Object oriented programming systems languages and applications
Auto-locating and fix-propagating for HTML validation errors to PHP server-side code
ASE '11 Proceedings of the 2011 26th IEEE/ACM International Conference on Automated Software Engineering
Localizing SQL faults in database applications
ASE '11 Proceedings of the 2011 26th IEEE/ACM International Conference on Automated Software Engineering
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PHP is a server-side language that is widely used for creating dynamic Web applications. However, as a dynamic language, PHP may induce certain programming errors that reveal themselves only at run time. A common type of error is dangling references, which occur if the referred program entities have not been declared in the current program execution. To prevent the run-time errors caused by such dangling references, we introduce Dangling Reference Checker (DRC), a novel tool to statically detect those references in the source code of PHP-based Web applications. DRC first identifies the path constraints of the program executions in which a program entity appears and then matches the path constraints of the entity's declarations and references to detect dangling ones. DRC is able to detect dangling reference errors in several real-world PHP systems with high accuracy. The video demonstration for DRC is available at http://www.youtube.com/watch?v=y_AKZYhLlU4.