phpmd: add page

pages/common/phpmd.md

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+# phpmd
+
+> A PHP mess detector that checks for common potential problems.
+
+- Display a list of available rulesets and formats:
+
+`phpmd`
+
+- Scan a file or directory for problems using comma-separated rulesets:
+
+`phpmd {{path/to/file_or_directory}} {{xml|text|html}} {{rulesets}}`
+
+- Specify the minimum priority threshold for rules:
+
+`phpmd {{path/to/file_or_directory}} {{xml|text|html}} {{rulesets}} --minimumpriority {{priority}}`
+
+- Include only the specified extensions in analysis:
+
+`phpmd {{path/to/file_or_directory}} {{xml|text|html}} {{rulesets}} --suffixes {{extensions}}`
+
+- Exclude the specified comma-separated directories:
+
+`phpmd {{path/to/file_or_directory}} {{xml|text|html}} {{rulesets}} --exclude {{directory_patterns}}`
+
+- Output the results to a file instead of stdout:
+
+`phpmd {{path/to/file_or_directory}} {{xml|text|html}} {{rulesets}} --reportfile {{path/to/report_file}}`
+
+- Ignore the use of warning-suppression PHPDoc comments:
+
+`phpmd {{path/to/file_or_directory}} {{xml|text|html}} {{rulesets}} --strict`