diff --git a/src/Php/UniversalMethodCall.php b/src/Php/UniversalMethodCall.php
index 2f2aa3d5..7b798a87 100644
--- a/src/Php/UniversalMethodCall.php
+++ b/src/Php/UniversalMethodCall.php
@@ -20,6 +20,27 @@ trait UniversalMethodCall
             'toFloat'  => ['handler' => 'convert_fn', 'fn' => 'toFloat', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
             'toString' => ['handler' => 'convert_fn', 'fn' => 'toString', 'return_type' => self::TYPE_STR, 'min_args' => 0, 'max_args' => 0],
             'toBool'   => ['handler' => 'convert_fn', 'fn' => 'toBool', 'return_type' => self::TYPE_BOOL, 'min_args' => 0, 'max_args' => 0],
+            // math
+            'abs'     => ['handler' => 'php_fn', 'fn' => 'abs', 'return_type' => self::TYPE_INT, 'min_args' => 0, 'max_args' => 0],
+            'ceil'    => ['handler' => 'php_fn', 'fn' => 'ceil', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'floor'   => ['handler' => 'php_fn', 'fn' => 'floor', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'round'   => ['handler' => 'php_fn', 'fn' => 'round', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 2],
+            'sqrt'    => ['handler' => 'php_fn', 'fn' => 'sqrt', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'pow'     => ['handler' => 'php_fn', 'fn' => 'pow', 'return_type' => self::TYPE_VAR, 'min_args' => 1, 'max_args' => 1],
+            'log'     => ['handler' => 'php_fn', 'fn' => 'log', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 1],
+            'log10'   => ['handler' => 'php_fn', 'fn' => 'log10', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'exp'     => ['handler' => 'php_fn', 'fn' => 'exp', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'sin'     => ['handler' => 'php_fn', 'fn' => 'sin', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'cos'     => ['handler' => 'php_fn', 'fn' => 'cos', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'tan'     => ['handler' => 'php_fn', 'fn' => 'tan', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'asin'    => ['handler' => 'php_fn', 'fn' => 'asin', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'acos'    => ['handler' => 'php_fn', 'fn' => 'acos', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'atan'    => ['handler' => 'php_fn', 'fn' => 'atan', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'atan2'   => ['handler' => 'php_fn', 'fn' => 'atan2', 'return_type' => self::TYPE_FLOAT, 'min_args' => 1, 'max_args' => 1],
+            'deg2rad' => ['handler' => 'php_fn', 'fn' => 'deg2rad', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'rad2deg' => ['handler' => 'php_fn', 'fn' => 'rad2deg', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'max'     => ['handler' => 'php_fn', 'fn' => 'max', 'return_type' => self::TYPE_INT, 'min_args' => 1, 'max_args' => 1],
+            'min'     => ['handler' => 'php_fn', 'fn' => 'min', 'return_type' => self::TYPE_INT, 'min_args' => 1, 'max_args' => 1],
         ],
         self::TYPE_FLOAT => [
             'add'      => ['handler' => 'calc_op', 'op' => '+', 'return_type' => self::TYPE_FLOAT, 'min_args' => 1, 'max_args' => 1],
@@ -31,6 +52,27 @@ trait UniversalMethodCall
             'toInt'    => ['handler' => 'convert_fn', 'fn' => 'toInt', 'return_type' => self::TYPE_INT, 'min_args' => 0, 'max_args' => 0],
             'toString' => ['handler' => 'convert_fn', 'fn' => 'toString', 'return_type' => self::TYPE_STR, 'min_args' => 0, 'max_args' => 0],
             'toBool'   => ['handler' => 'convert_fn', 'fn' => 'toBool', 'return_type' => self::TYPE_BOOL, 'min_args' => 0, 'max_args' => 0],
+            // math
+            'abs'     => ['handler' => 'php_fn', 'fn' => 'abs', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'ceil'    => ['handler' => 'php_fn', 'fn' => 'ceil', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'floor'   => ['handler' => 'php_fn', 'fn' => 'floor', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'round'   => ['handler' => 'php_fn', 'fn' => 'round', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 2],
+            'sqrt'    => ['handler' => 'php_fn', 'fn' => 'sqrt', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'pow'     => ['handler' => 'php_fn', 'fn' => 'pow', 'return_type' => self::TYPE_FLOAT, 'min_args' => 1, 'max_args' => 1],
+            'log'     => ['handler' => 'php_fn', 'fn' => 'log', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 1],
+            'log10'   => ['handler' => 'php_fn', 'fn' => 'log10', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'exp'     => ['handler' => 'php_fn', 'fn' => 'exp', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'sin'     => ['handler' => 'php_fn', 'fn' => 'sin', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'cos'     => ['handler' => 'php_fn', 'fn' => 'cos', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'tan'     => ['handler' => 'php_fn', 'fn' => 'tan', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'asin'    => ['handler' => 'php_fn', 'fn' => 'asin', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'acos'    => ['handler' => 'php_fn', 'fn' => 'acos', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'atan'    => ['handler' => 'php_fn', 'fn' => 'atan', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'atan2'   => ['handler' => 'php_fn', 'fn' => 'atan2', 'return_type' => self::TYPE_FLOAT, 'min_args' => 1, 'max_args' => 1],
+            'deg2rad' => ['handler' => 'php_fn', 'fn' => 'deg2rad', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'rad2deg' => ['handler' => 'php_fn', 'fn' => 'rad2deg', 'return_type' => self::TYPE_FLOAT, 'min_args' => 0, 'max_args' => 0],
+            'max'     => ['handler' => 'php_fn', 'fn' => 'max', 'return_type' => self::TYPE_FLOAT, 'min_args' => 1, 'max_args' => 1],
+            'min'     => ['handler' => 'php_fn', 'fn' => 'min', 'return_type' => self::TYPE_FLOAT, 'min_args' => 1, 'max_args' => 1],
         ],
         self::TYPE_BOOL => [
             'toInt'    => ['handler' => 'convert_fn', 'fn' => 'toInt', 'return_type' => self::TYPE_INT, 'min_args' => 0, 'max_args' => 0],
@@ -183,6 +225,11 @@ trait UniversalMethodCall
             'unshift'           => ['handler' => 'php_fn_ref', 'fn' => 'array_unshift', 'return_type' => self::TYPE_INT, 'min_args' => 1, 'max_args' => -1],
             'splice'            => ['handler' => 'php_fn_ref', 'fn' => 'array_splice', 'return_type' => self::TYPE_ARRAY, 'min_args' => 1, 'max_args' => 3],
             'walk'              => ['handler' => 'php_fn_ref', 'fn' => 'array_walk', 'return_type' => self::TYPE_BOOL, 'min_args' => 1, 'max_args' => 2],
+            'sortDesc'          => ['handler' => 'php_fn_ref', 'fn' => 'rsort', 'return_type' => self::TYPE_BOOL, 'min_args' => 0, 'max_args' => 1],
+            'keySort'           => ['handler' => 'php_fn_ref', 'fn' => 'ksort', 'return_type' => self::TYPE_BOOL, 'min_args' => 0, 'max_args' => 1],
+            'valueSort'         => ['handler' => 'php_fn_ref', 'fn' => 'asort', 'return_type' => self::TYPE_BOOL, 'min_args' => 0, 'max_args' => 1],
+            'combine'           => ['handler' => 'php_fn', 'fn' => 'array_combine', 'return_type' => self::TYPE_ARRAY, 'min_args' => 1, 'max_args' => 1],
+            'fillKeys'          => ['handler' => 'php_fn', 'fn' => 'array_fill_keys', 'return_type' => self::TYPE_ARRAY, 'min_args' => 1, 'max_args' => 1],
             'replaceStr'        => ['handler' => 'php_fn', 'fn' => 'str_replace', 'receiver_pos' => 3, 'return_type' => self::TYPE_ARRAY, 'min_args' => 1, 'max_args' => 2],
             'iReplaceStr'       => ['handler' => 'php_fn', 'fn' => 'str_ireplace', 'receiver_pos' => 3, 'return_type' => self::TYPE_ARRAY, 'min_args' => 1, 'max_args' => 2],
             // serialize