diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3b469d222..2bf1bb167 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](http://semver.org).
 ## [Unreleased]
 ### Fixed
 - Fixed default value of nullable string parameter [#2180](https://github.com/zephir-lang/zephir/issues/2180)
+- Fixed cast of `string` to `int` and `float` [#828](https://github.com/zephir-lang/zephir/issues/828)
 
 ## [0.13.1] - 2021-03-31
 ### Added
diff --git a/kernels/ZendEngine3/operators.c b/kernels/ZendEngine3/operators.c
index 1cc0064ea..7b7749e93 100755
--- a/kernels/ZendEngine3/operators.c
+++ b/kernels/ZendEngine3/operators.c
@@ -277,6 +277,10 @@ void zephir_convert_to_object(zval *op)
  */
 long zephir_get_intval_ex(const zval *op)
 {
+    int type;
+    double double_value = 0;
+    zend_long long_value = 0;
+
 	switch (Z_TYPE_P(op)) {
 		case IS_ARRAY:
 			return zend_hash_num_elements(Z_ARRVAL_P(op)) ? 1 : 0;
@@ -301,19 +305,16 @@ long zephir_get_intval_ex(const zval *op)
 			return (long) Z_DVAL_P(op);
 
 		case IS_STRING: {
-			zend_uchar type;
-			double double_value = 0;
-			zend_long long_value = 0;
-
 			ASSUME(Z_STRVAL_P(op) != NULL);
-			type = is_numeric_string(Z_STRVAL_P(op), Z_STRLEN_P(op), &long_value, &double_value, 0);
-			if (type == IS_LONG) {
-				return long_value;
-			}
-			if (type == IS_DOUBLE) {
-				return (long) double_value;
-			}
-			return 0;
+
+			type = is_numeric_string(Z_STRVAL_P(op), Z_STRLEN_P(op), &long_value, &double_value, 1);
+            switch (type) {
+                case IS_LONG:
+                    return long_value;
+
+                case IS_DOUBLE:
+                    return (long) double_value;
+            }
 		}
 	}
 
@@ -358,11 +359,10 @@ long zephir_get_charval_ex(const zval *op)
 double zephir_get_doubleval_ex(const zval *op)
 {
 	int type;
-	zend_long long_value = 0;
-	double double_value = 0;
+    double double_value = 0;
+    zend_long long_value = 0;
 
 	switch (Z_TYPE_P(op)) {
-
         case IS_ARRAY:
             return zend_hash_num_elements(Z_ARRVAL_P(op)) ? (double) 1 : 0;
 
@@ -384,17 +384,14 @@ double zephir_get_doubleval_ex(const zval *op)
 			return Z_DVAL_P(op);
 
 		case IS_STRING:
-			if ((type = is_numeric_string(Z_STRVAL_P(op), Z_STRLEN_P(op), &long_value, &double_value, 0))) {
-				if (type == IS_LONG) {
-					return (double) long_value;
-				} else {
-					if (type == IS_DOUBLE) {
-						return double_value;
-					} else {
-						return 0;
-					}
-				}
-			}
+		    type = is_numeric_string(Z_STRVAL_P(op), Z_STRLEN_P(op), &long_value, &double_value, 1);
+            switch (type) {
+                case IS_LONG:
+                    return (double) long_value;
+
+                case IS_DOUBLE:
+                    return double_value;
+            }
 	}
 
 	return 0;
diff --git a/stub/cast.zep b/stub/cast.zep
index a31e88ed4..c6fd1c9dc 100644
--- a/stub/cast.zep
+++ b/stub/cast.zep
@@ -483,4 +483,24 @@ class Cast
         return uids;
     }
 
+    public function testIssue828() -> array
+    {
+        array ret = [];
+        var version = "1.0 200 OK", nonNumericString = "OK", floatVersion, intVersion, floatNonNumeric, intNonNumeric;
+
+        let ret[] = version;
+        let ret[] = nonNumericString;
+
+        let floatVersion = (double)version,
+            intVersion   = (int)version,
+            floatNonNumeric = (double)nonNumericString,
+            intNonNumeric = (int)nonNumericString;
+
+        let ret[] = floatVersion;
+        let ret[] = intVersion;
+        let ret[] = floatNonNumeric;
+        let ret[] = intNonNumeric;
+
+        return ret;
+    }
 }
diff --git a/tests/Extension/CastTest.php b/tests/Extension/CastTest.php
index d92482886..ca5652a4c 100644
--- a/tests/Extension/CastTest.php
+++ b/tests/Extension/CastTest.php
@@ -205,4 +205,17 @@ public function testArrayCast(): void
         $this->assertEquals((array) 'aaa', $this->test->testArrayCastFromVariableString());
         $this->assertEquals((array) ['p1' => 'v1', 'p2' => 'v2'], $this->test->testArrayCastFromVariableStdClass());
     }
+
+    public function testIssue828(): void
+    {
+        $return = $this->test->testIssue828();
+
+        $this->assertSame(['1.0 200 OK', 'OK', 1.0, 1, 0.0, 0], $return);
+        $this->assertSame('1.0 200 OK', $return[0]);
+        $this->assertSame('OK', $return[1]);
+        $this->assertSame(1.0, $return[2]);
+        $this->assertSame(1, $return[3]);
+        $this->assertSame(0.0, $return[4]);
+        $this->assertSame(0, $return[5]);
+    }
 }