This patch should do it:
diff --git a/debian/control b/debian/control
index 0444836..777fe85 100644
--- a/debian/control
+++ b/debian/control
@@ -13,7 +13,7 @@ Package: smarty-gettext
Architecture: all
Depends: ${misc:Depends},
${phpcomposer:Debian-require},
- php5-cli,
+ php-cli,
smarty3,
gettext,
Description: Gettext plugin enabling internationalization in Smarty
Wolfgang
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