phpcpd: add page (#2614)

pages/common/phpcpd.md

@@ -0,0 +1,27 @@
+# phpcpd
+
+> A copy and paste detector for PHP code.
+
+- Analyse duplicated code for a specific file or directory:
+
+`phpcpd {{path/to/file_or_directory}}`
+
+- Analyse using fuzzy matching for variable names:
+
+`phpcpd --fuzzy {{path/to/file_or_directory}}`
+
+- Specify a minimum number of identical lines (defaults to 5):
+
+`phpcpd --min-lines {{number_of_lines}} {{path/to/file_or_directory}}`
+
+- Specify a minimum number of identical tokens (defaults to 70):
+
+`phpcpd --min-tokens {{number_of_tokens}} {{path/to/file_or_directory}}`
+
+- Exclude a directory from analysis (must be relative to the source):
+
+`phpcpd --exclude {{path/to/excluded_directory}} {{path/to/file_or_directory}}`
+
+- Output the results to a PHP-CPD XML file:
+
+`phpcpd --log-pmd {{path/to/log_file}} {{path/to/file_or_directory}}`