diff --git a/src/base.cc b/src/base.cc
index 9d3df0a..d10bdef 100644
--- a/src/base.cc
+++ b/src/base.cc
@@ -77,49 +77,57 @@ namespace php_arma
     template <typename T, typename T1>
     PHP_ARMA_METHOD(base, min, T, T1)
     {
-        
+        auto native = THIS_NATIVE;
+        zval_set_scalar(return_value, native->min());
     }
 
     template <typename T, typename T1>
     PHP_ARMA_METHOD(base, max, T, T1)
     {
-        
+        auto native = THIS_NATIVE;
+        zval_set_scalar(return_value, native->max());
     }
 
     template <typename T, typename T1>
     PHP_ARMA_METHOD(base, indexMin, T, T1)
     {
-        
+        auto native = THIS_NATIVE;
+        RETVAL_LONG(native->index_min());
     }
 
     template <typename T, typename T1>
     PHP_ARMA_METHOD(base, indexMax, T, T1)
     {
-        
+        auto native = THIS_NATIVE;
+        RETVAL_LONG(native->index_max());
     }
 
     template <typename T, typename T1>
     PHP_ARMA_METHOD(base, isEmpty, T, T1)
     {
-        
+        auto native = THIS_NATIVE;
+        RETVAL_BOOL(native->is_empty());
     }
 
     template <typename T, typename T1>
     PHP_ARMA_METHOD(base, isFinite, T, T1)
     {
-        
+        auto native = THIS_NATIVE;
+        RETVAL_BOOL(native->is_finite());
     }
 
     template <typename T, typename T1>
     PHP_ARMA_METHOD(base, hasInf, T, T1)
     {
-        
+        auto native = THIS_NATIVE;
+        RETVAL_BOOL(native->has_inf());
     }
 
     template <typename T, typename T1>
     PHP_ARMA_METHOD(base, hasNan, T, T1)
     {
-        
+        auto native = THIS_NATIVE;
+        RETVAL_BOOL(native->has_nan());
     }
 
     template <typename T, typename T1>
diff --git a/src/constants.cc b/src/constants.cc
index fdf74a8..7bd6140 100644
--- a/src/constants.cc
+++ b/src/constants.cc
@@ -10,32 +10,6 @@
 
 namespace php_arma
 {
-    arma::file_type file_type::native(zend_long val)
-    {
-        switch (val) {
-            case file_type::auto_detect:
-                return arma::file_type::auto_detect;
-            case file_type::arma_binary:
-                return arma::file_type::arma_binary;
-            case file_type::arma_ascii:
-                return arma::file_type::arma_ascii;
-            case file_type::raw_binary:
-                return arma::file_type::raw_binary;
-            case file_type::csv_ascii:
-                return arma::file_type::csv_ascii;
-            case file_type::coord_ascii:
-                return arma::file_type::coord_ascii;
-            case file_type::pgm_binary:
-                return arma::file_type::pgm_binary;
-#ifdef ARMA_USE_HDF5
-            case file_type::hdf5_binary:
-                return arma::file_type::hdf5_binary;
-#endif // ARMA_USE_HDF5
-            default:
-                return arma::file_type::file_type_unknown;
-        }
-    }
-
     template <typename... Ts>
     zend_always_inline
     void const_declare(zend_class_entry *ce, Ts&&... constants)
diff --git a/src/constants.hh b/src/constants.hh
index 8095767..df64abb 100644
--- a/src/constants.hh
+++ b/src/constants.hh
@@ -21,6 +21,33 @@ namespace php_arma
         static constexpr auto eye            = 3;
         static constexpr auto randu          = 4;
         static constexpr auto randn          = 5;
+
+        template <typename T>
+        zend_always_inline
+        static void invoke(T *obj, zend_long val)
+        {
+            switch (val) {
+                case fill::none:
+                    break;
+                case fill::zeros:
+                    obj->zeros();
+                    break;
+                case fill::ones:
+                    obj->ones();
+                    break;
+                case fill::eye:
+                    obj->eye();
+                    break;
+                case fill::randu:
+                    obj->randu();
+                    break;
+                case fill::randn:
+                    obj->randn();
+                    break;
+                default:
+                    zend_throw_exception(zend_ce_error, "bad fill type", 0);
+            }
+        }
     };
 
     constexpr const char fill_php_name[] = "Fill";
@@ -38,7 +65,32 @@ namespace php_arma
         static constexpr auto pgm_binary     = 7;
         static constexpr auto hdf5_binary    = 8;
 
-        static arma::file_type native(zend_long);
+        zend_always_inline
+        static arma::file_type native(zend_long val)
+        {
+            switch (val) {
+                case file_type::auto_detect:
+                    return arma::file_type::auto_detect;
+                case file_type::arma_binary:
+                    return arma::file_type::arma_binary;
+                case file_type::arma_ascii:
+                    return arma::file_type::arma_ascii;
+                case file_type::raw_binary:
+                    return arma::file_type::raw_binary;
+                case file_type::csv_ascii:
+                    return arma::file_type::csv_ascii;
+                case file_type::coord_ascii:
+                    return arma::file_type::coord_ascii;
+                case file_type::pgm_binary:
+                    return arma::file_type::pgm_binary;
+#ifdef ARMA_USE_HDF5
+                case file_type::hdf5_binary:
+                    return arma::file_type::hdf5_binary;
+#endif // ARMA_USE_HDF5
+                default:
+                    return arma::file_type::file_type_unknown;
+            }
+        }
     };
 
     constexpr const char file_type_php_name[] = "FileType";
diff --git a/src/mat.cc b/src/mat.cc
index 2db8dd5..eddaba2 100644
--- a/src/mat.cc
+++ b/src/mat.cc
@@ -5,6 +5,7 @@
 //
 
 #include "mat.hh"
+#include "constants.hh"
 #include "base.hh"
 #include "dense.hh"
 #include "matrix.hh"
@@ -20,7 +21,19 @@ namespace php_arma
     template <typename T>
     PHP_ARMA_METHOD(mat, init, T)
     {
-        
+        zend_long n_rows = 0;
+        zend_long n_cols = 0;
+        zend_long fill   = fill::none;
+        ZEND_PARSE_PARAMETERS_START(0, 3)
+            Z_PARAM_OPTIONAL
+            Z_PARAM_LONG_DEREF(n_rows)
+            Z_PARAM_LONG_DEREF(n_cols)
+            Z_PARAM_LONG_DEREF(fill)
+        ZEND_PARSE_PARAMETERS_END();
+
+        auto zobj = create(n_rows, n_cols);
+        fill::invoke(ZOBJ_NATIVE(zobj), fill);
+        RETVAL_OBJ(zobj);
     }
 
     template <typename T>
diff --git a/src/resizable.cc b/src/resizable.cc
index 3567a0e..02b17b4 100644
--- a/src/resizable.cc
+++ b/src/resizable.cc
@@ -70,7 +70,8 @@ namespace php_arma
     template <typename T, typename T1>
     PHP_ARMA_METHOD(resizable, reset, T, T1)
     {
-        
+        auto native = THIS_NATIVE;
+        native->reset();
     }
 
     template <typename T, typename T1>