Optimize integer in_array with strict=true

It doesn't make sense that using in_array with strict=false is
much faster for this case, due to lack of a specialized codepath.

Author: nikic

ext/standard/array.c

@@ -1554,21 +1554,39 @@ static inline void php_search_array(INTERNAL_FUNCTION_PARAMETERS, int behavior)
 	ZEND_PARSE_PARAMETERS_END();
 
 	if (strict) {
-		ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(array), num_idx, str_idx, entry) {
-			ZVAL_DEREF(entry);
-			if (fast_is_identical_function(value, entry)) {
-				if (behavior == 0) {
-					RETURN_TRUE;
-				} else {
-					if (str_idx) {
-						RETVAL_STR_COPY(str_idx);
+		if (Z_TYPE_P(value) == IS_LONG) {
+			ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(array), num_idx, str_idx, entry) {
+				ZVAL_DEREF(entry);
+				if (Z_TYPE_P(entry) == IS_LONG && Z_LVAL_P(entry) == Z_LVAL_P(value)) {
+					if (behavior == 0) {
+						RETURN_TRUE;
 					} else {
-						RETVAL_LONG(num_idx);
+						if (str_idx) {
+							RETVAL_STR_COPY(str_idx);
+						} else {
+							RETVAL_LONG(num_idx);
+						}
+						return;
 					}
-					return;
 				}
-			}
-		} ZEND_HASH_FOREACH_END();
+			} ZEND_HASH_FOREACH_END();
+		} else {
+			ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(array), num_idx, str_idx, entry) {
+				ZVAL_DEREF(entry);
+				if (fast_is_identical_function(value, entry)) {
+					if (behavior == 0) {
+						RETURN_TRUE;
+					} else {
+						if (str_idx) {
+							RETVAL_STR_COPY(str_idx);
+						} else {
+							RETVAL_LONG(num_idx);
+						}
+						return;
+					}
+				}
+			} ZEND_HASH_FOREACH_END();
+		}
 	} else {
 		if (Z_TYPE_P(value) == IS_LONG) {
 			ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(array), num_idx, str_idx, entry) {