diff --git a/NEWS b/NEWS
index d71a5c718c3..2f5bd4626bd 100644
--- a/NEWS
+++ b/NEWS
@@ -23,6 +23,8 @@ PHP                                                                        NEWS
 - Standard:
   . Fixed bug GH-9017 (php_stream_sock_open_from_socket could return NULL).
     (Heiko Weber)
+  . Fixed bug GH-9296 (`ksort` behaves incorrectly on arrays with mixed keys).
+    (Denis Vaksman)
 
 - Streams:
   . Fixed bug GH-8472 (The resource returned by stream_socket_accept may have
diff --git a/ext/standard/array.c b/ext/standard/array.c
index 32ad1b0eaa6..d145661e378 100644
--- a/ext/standard/array.c
+++ b/ext/standard/array.c
@@ -166,40 +166,25 @@ static zend_never_inline ZEND_COLD int stable_sort_fallback(Bucket *a, Bucket *b
 
 static zend_always_inline int php_array_key_compare_unstable_i(Bucket *f, Bucket *s) /* {{{ */
 {
-	zend_uchar t;
-	zend_long l1, l2;
-	double d;
+    zval first;
+    zval second;
 
-	if (f->key == NULL) {
-		if (s->key == NULL) {
-			return (zend_long)f->h > (zend_long)s->h ? 1 : -1;
-		} else {
-			l1 = (zend_long)f->h;
-			t = is_numeric_string(s->key->val, s->key->len, &l2, &d, 1);
-			if (t == IS_LONG) {
-				/* pass */
-			} else if (t == IS_DOUBLE) {
-				return ZEND_NORMALIZE_BOOL((double)l1 - d);
-			} else {
-				l2 = 0;
-			}
-		}
-	} else {
-		if (s->key) {
-			return zendi_smart_strcmp(f->key, s->key);
-		} else {
-			l2 = (zend_long)s->h;
-			t = is_numeric_string(f->key->val, f->key->len, &l1, &d, 1);
-			if (t == IS_LONG) {
-				/* pass */
-			} else if (t == IS_DOUBLE) {
-				return ZEND_NORMALIZE_BOOL(d - (double)l2);
-			} else {
-				l1 = 0;
-			}
-		}
-	}
-	return ZEND_NORMALIZE_BOOL(l1 - l2);
+    if (f->key == NULL && s->key == NULL) {
+        return (zend_long)f->h > (zend_long)s->h ? 1 : -1;
+    } else if (f->key && s->key) {
+        return zendi_smart_strcmp(f->key, s->key);
+    }
+    if (f->key) {
+        ZVAL_STR(&first, f->key);
+    } else {
+        ZVAL_LONG(&first, f->h);
+    }
+    if (s->key) {
+        ZVAL_STR(&second, s->key);
+    } else {
+        ZVAL_LONG(&second, s->h);
+    }
+    return zend_compare(&first, &second);
 }
 /* }}} */
 
diff --git a/ext/standard/tests/array/002.phpt b/ext/standard/tests/array/002.phpt
index fdb838deb19..5cf377e2a35 100644
--- a/ext/standard/tests/array/002.phpt
+++ b/ext/standard/tests/array/002.phpt
@@ -276,6 +276,8 @@ array(8) {
  -- Testing krsort() -- 
 No second argument:
 array(8) {
+  ["test"]=>
+  int(27)
   [16777216]=>
   float(-0.3333333333333333)
   [1001]=>
@@ -288,8 +290,6 @@ array(8) {
   string(4) "Test"
   [0]=>
   string(3) "PHP"
-  ["test"]=>
-  int(27)
   [-1000]=>
   array(2) {
     [0]=>
@@ -300,6 +300,8 @@ array(8) {
 }
 Using SORT_REGULAR:
 array(8) {
+  ["test"]=>
+  int(27)
   [16777216]=>
   float(-0.3333333333333333)
   [1001]=>
@@ -312,8 +314,6 @@ array(8) {
   string(4) "Test"
   [0]=>
   string(3) "PHP"
-  ["test"]=>
-  int(27)
   [-1000]=>
   array(2) {
     [0]=>
@@ -334,10 +334,10 @@ array(8) {
   string(27) "PHP: Hypertext Preprocessor"
   [5]=>
   string(4) "Test"
-  [0]=>
-  string(3) "PHP"
   ["test"]=>
   int(27)
+  [0]=>
+  string(3) "PHP"
   [-1000]=>
   array(2) {
     [0]=>
@@ -383,8 +383,6 @@ array(8) {
   }
   [0]=>
   string(3) "PHP"
-  ["test"]=>
-  int(27)
   [5]=>
   string(4) "Test"
   [17]=>
@@ -395,6 +393,8 @@ array(8) {
   string(6) "monkey"
   [16777216]=>
   float(-0.3333333333333333)
+  ["test"]=>
+  int(27)
 }
 Using SORT_REGULAR:
 array(8) {
@@ -407,8 +407,6 @@ array(8) {
   }
   [0]=>
   string(3) "PHP"
-  ["test"]=>
-  int(27)
   [5]=>
   string(4) "Test"
   [17]=>
@@ -419,6 +417,8 @@ array(8) {
   string(6) "monkey"
   [16777216]=>
   float(-0.3333333333333333)
+  ["test"]=>
+  int(27)
 }
 Using SORT_NUMERIC:
 array(8) {
diff --git a/ext/standard/tests/array/gh9296.phpt b/ext/standard/tests/array/gh9296.phpt
new file mode 100644
index 00000000000..cfbc5cbbb09
--- /dev/null
+++ b/ext/standard/tests/array/gh9296.phpt
@@ -0,0 +1,17 @@
+--TEST--
+GH-9296: incorrect ksort(..., SORT_REGULAR) behaviour on arrays with numeric and string keys
+--FILE--
+<?php
+$array = ["aaa" => 0, 600 => 1];
+ksort($array, SORT_REGULAR);
+var_dump($array);
+var_dump(array_key_first($array) <=> array_key_last($array));
+?>
+--EXPECT--
+array(2) {
+  [600]=>
+  int(1)
+  ["aaa"]=>
+  int(0)
+}
+int(-1)
diff --git a/ext/standard/tests/array/krsort_variation8.phpt b/ext/standard/tests/array/krsort_variation8.phpt
index 1483e6fd1bb..39e72e2eb22 100644
Binary files a/ext/standard/tests/array/krsort_variation8.phpt and b/ext/standard/tests/array/krsort_variation8.phpt differ
diff --git a/ext/standard/tests/array/krsort_variation9.phpt b/ext/standard/tests/array/krsort_variation9.phpt
index 4364911b621..b0309f373d3 100644
--- a/ext/standard/tests/array/krsort_variation9.phpt
+++ b/ext/standard/tests/array/krsort_variation9.phpt
@@ -82,22 +82,22 @@ array(5) {
 - With default sort flag -
 bool(true)
 array(3) {
+  ["c"]=>
+  string(5) "apple"
   ["a"]=>
   string(6) "orange"
   [0]=>
   string(6) "banana"
-  ["c"]=>
-  string(5) "apple"
 }
 - Sort flag = SORT_REGULAR -
 bool(true)
 array(3) {
+  ["c"]=>
+  string(5) "apple"
   ["a"]=>
   string(6) "orange"
   [0]=>
   string(6) "banana"
-  ["c"]=>
-  string(5) "apple"
 }
 
 -- Iteration 3 --
diff --git a/ext/standard/tests/array/ksort_variation8.phpt b/ext/standard/tests/array/ksort_variation8.phpt
index 7b7e1c003e5..9a15c4dc3e7 100644
Binary files a/ext/standard/tests/array/ksort_variation8.phpt and b/ext/standard/tests/array/ksort_variation8.phpt differ
diff --git a/ext/standard/tests/array/ksort_variation9.phpt b/ext/standard/tests/array/ksort_variation9.phpt
index 9322af70f57..0023a9e0602 100644
--- a/ext/standard/tests/array/ksort_variation9.phpt
+++ b/ext/standard/tests/array/ksort_variation9.phpt
@@ -81,20 +81,20 @@ array(5) {
 - With default sort flag -
 bool(true)
 array(3) {
-  ["a"]=>
-  string(6) "orange"
   [0]=>
   string(6) "banana"
+  ["a"]=>
+  string(6) "orange"
   ["c"]=>
   string(5) "apple"
 }
 - Sort flag = SORT_REGULAR -
 bool(true)
 array(3) {
-  ["a"]=>
-  string(6) "orange"
   [0]=>
   string(6) "banana"
+  ["a"]=>
+  string(6) "orange"
   ["c"]=>
   string(5) "apple"
 }