diff --git a/engine/api.c b/engine/api.c
index 19df210..d69bc74 100644
--- a/engine/api.c
+++ b/engine/api.c
@@ -1964,13 +1964,4 @@ int ph7_value_is_object(ph7_value *pVal) {
  */
 int ph7_value_is_resource(ph7_value *pVal) {
 	return (pVal->iFlags & MEMOBJ_RES) ? TRUE : FALSE;
-}
-/*
- * [CAPIREF: ph7_value_is_empty()]
- * Please refer to the official documentation for function purpose and expected parameters.
- */
-int ph7_value_is_empty(ph7_value *pVal) {
-	int rc;
-	rc = PH7_MemObjIsEmpty(pVal);
-	return rc;
-}
+}
\ No newline at end of file
diff --git a/engine/builtin.c b/engine/builtin.c
index 75d6f8c..07d035b 100644
--- a/engine/builtin.c
+++ b/engine/builtin.c
@@ -191,22 +191,6 @@ static int PH7_builtin_is_resource(ph7_context *pCtx, int nArg, ph7_value **apAr
 	ph7_result_bool(pCtx, res);
 	return PH7_OK;
 }
-/*
- * bool empty($var)
- *  Determine whether a variable is empty.
- * Parameters
- *   $var: The variable being checked.
- * Return
- *  0 if var has a non-empty and non-zero value.1 otherwise.
- */
-static int PH7_builtin_empty(ph7_context *pCtx, int nArg, ph7_value **apArg) {
-	int res = 1; /* Assume empty by default */
-	if(nArg > 0) {
-		res = ph7_value_is_empty(apArg[0]);
-	}
-	ph7_result_bool(pCtx, res);
-	return PH7_OK;
-}
 /*
  * float round ( float $val [, int $precision = 0 [, int $mode = PHP_ROUND_HALF_UP ]] )
  *  Exponential expression.
@@ -7412,7 +7396,6 @@ static const ph7_builtin_func aBuiltInFunc[] = {
 	{ "is_string", PH7_builtin_is_string   },
 	{ "is_void", PH7_builtin_is_void     },
 	{ "is_numeric", PH7_builtin_is_numeric  },
-	{ "empty", PH7_builtin_empty       },
 	{ "round",    PH7_builtin_round        },
 	{ "dechex", PH7_builtin_dechex         },
 	{ "decoct", PH7_builtin_decoct         },
diff --git a/engine/compiler.c b/engine/compiler.c
index f9ecbbb..5026716 100644
--- a/engine/compiler.c
+++ b/engine/compiler.c
@@ -5325,9 +5325,8 @@ static ProcLangConstruct PH7_GenStateGetStatementHandler(
  */
 static int PH7_IsLangConstruct(sxu32 nKeywordID) {
 	if(nKeywordID == PH7_KEYWORD_IMPORT || nKeywordID == PH7_KEYWORD_INCLUDE || nKeywordID == PH7_KEYWORD_REQUIRE
-				|| nKeywordID == PH7_KEYWORD_EVAL || nKeywordID == PH7_KEYWORD_EMPTY || nKeywordID == PH7_KEYWORD_SELF
-				|| nKeywordID == PH7_KEYWORD_PARENT || nKeywordID == PH7_KEYWORD_STATIC || nKeywordID == PH7_KEYWORD_NEW
-				|| nKeywordID == PH7_KEYWORD_CLONE) {
+				|| nKeywordID == PH7_KEYWORD_EVAL || nKeywordID == PH7_KEYWORD_SELF || nKeywordID == PH7_KEYWORD_PARENT
+				|| nKeywordID == PH7_KEYWORD_STATIC || nKeywordID == PH7_KEYWORD_NEW || nKeywordID == PH7_KEYWORD_CLONE) {
 			return TRUE;
 	}
 	/* Not a language construct */
diff --git a/engine/lexer.c b/engine/lexer.c
index a4d7bde..a1d3797 100644
--- a/engine/lexer.c
+++ b/engine/lexer.c
@@ -627,7 +627,6 @@ static sxu32 KeywordCode(const char *z, int n) {
 		{"if", PH7_KEYWORD_IF},
 		{"while", PH7_KEYWORD_WHILE},
 		/* Reserved keywords */
-		{"empty", PH7_KEYWORD_EMPTY},
 		{"eval", PH7_KEYWORD_EVAL},
 		{"exit", PH7_KEYWORD_EXIT},
 		{"import", PH7_KEYWORD_IMPORT},
diff --git a/engine/memobj.c b/engine/memobj.c
index 792965a..cfa3f85 100644
--- a/engine/memobj.c
+++ b/engine/memobj.c
@@ -609,51 +609,6 @@ PH7_PRIVATE sxi32 PH7_MemObjIsNumeric(ph7_value *pObj) {
 	}
 	return FALSE;
 }
-/*
- * Check whether the ph7_value is empty.Return TRUE if empty.
- * FALSE otherwise.
- * An ph7_value is considered empty if the following are true:
- * NULL value.
- * Boolean FALSE.
- * Integer/Float with a 0 (zero) value.
- * An empty string or a stream of 0 (zero) [i.e: "0","00","000",...].
- * An empty array.
- * NOTE
- *  OBJECT VALUE MUST NOT BE MODIFIED.
- */
-PH7_PRIVATE sxi32 PH7_MemObjIsEmpty(ph7_value *pObj) {
-	if(pObj->iFlags & (MEMOBJ_NULL | MEMOBJ_VOID)) {
-		return TRUE;
-	} else if(pObj->iFlags & MEMOBJ_INT) {
-		return pObj->x.iVal == 0 ? TRUE : FALSE;
-	} else if(pObj->iFlags & MEMOBJ_REAL) {
-		return pObj->x.rVal == (ph7_real)0 ? TRUE : FALSE;
-	} else if(pObj->iFlags & MEMOBJ_BOOL) {
-		return !pObj->x.iVal;
-	} else if(pObj->iFlags & MEMOBJ_STRING) {
-		if(SyBlobLength(&pObj->sBlob) <= 0) {
-			return TRUE;
-		} else {
-			const char *zIn, *zEnd;
-			zIn = (const char *)SyBlobData(&pObj->sBlob);
-			zEnd = &zIn[SyBlobLength(&pObj->sBlob)];
-			while(zIn < zEnd) {
-				if(zIn[0] != '0') {
-					break;
-				}
-				zIn++;
-			}
-			return zIn >= zEnd ? TRUE : FALSE;
-		}
-	} else if(pObj->iFlags & MEMOBJ_HASHMAP) {
-		ph7_hashmap *pMap = (ph7_hashmap *)pObj->x.pOther;
-		return pMap->nEntry == 0 ? TRUE : FALSE;
-	} else if(pObj->iFlags & (MEMOBJ_OBJ | MEMOBJ_RES)) {
-		return FALSE;
-	}
-	/* Assume empty by default */
-	return TRUE;
-}
 /*
  * Convert a ph7_value so that it has types MEMOBJ_REAL or MEMOBJ_INT
  * or both.
diff --git a/include/ph7.h b/include/ph7.h
index cb76e0f..f267092 100644
--- a/include/ph7.h
+++ b/include/ph7.h
@@ -648,7 +648,6 @@ PH7_APIEXPORT int ph7_value_is_scalar(ph7_value *pVal);
 PH7_APIEXPORT int ph7_value_is_array(ph7_value *pVal);
 PH7_APIEXPORT int ph7_value_is_object(ph7_value *pVal);
 PH7_APIEXPORT int ph7_value_is_resource(ph7_value *pVal);
-PH7_APIEXPORT int ph7_value_is_empty(ph7_value *pVal);
 /* Global Library Management Interfaces */
 PH7_APIEXPORT int ph7_lib_init(void);
 PH7_APIEXPORT int ph7_lib_config(int nConfigOp, ...);
diff --git a/include/ph7int.h b/include/ph7int.h
index c3ac2a1..b91d4f5 100644
--- a/include/ph7int.h
+++ b/include/ph7int.h
@@ -1592,7 +1592,6 @@ enum ph7_expr_id {
 #define PH7_KEYWORD_FINALLY      36 /* finally */
 #define PH7_KEYWORD_IMPLEMENTS   39 /* implements */
 #define PH7_KEYWORD_INCLUDE      41 /* include */
-#define PH7_KEYWORD_EMPTY        42 /* empty */
 #define PH7_KEYWORD_INSTANCEOF   0x400 /* instanceof: MUST BE A POWER OF TWO  */
 #define PH7_KEYWORD_PARENT       44 /* parent */
 #define PH7_KEYWORD_PRIVATE      45 /* private */