diff --git a/ChangeLog.adoc b/ChangeLog.adoc
index 01f02c259..1649d47d9 100644
--- a/ChangeLog.adoc
+++ b/ChangeLog.adoc
@@ -28,6 +28,7 @@ Bug fixes::
 
   * core: refilter only affected buffers on filter change (issue #1309, issue #1311)
   * fset: fix slow refresh of fset buffer during /reload (issue #1313)
+  * php: fix memory leak in functions string_eval_expression, string_eval_path_home, key_bind, hook_process_hashtable, hook_hsignal_send, info_get_hashtable, hdata_update
   * spell: fix detection of nick followed by the nick completer (issue #1306, issue #1307)
 
 Build::
diff --git a/src/plugins/php/weechat-php-api.c b/src/plugins/php/weechat-php-api.c
index 0f9e1a554..e95bf5786 100644
--- a/src/plugins/php/weechat-php-api.c
+++ b/src/plugins/php/weechat-php-api.c
@@ -566,11 +566,19 @@ API_FUNC(string_eval_expression)
         WEECHAT_SCRIPT_HASHTABLE_DEFAULT_SIZE,
         WEECHAT_HASHTABLE_STRING,
         WEECHAT_HASHTABLE_STRING);
+
     result = weechat_string_eval_expression ((const char *)expr,
                                              pointers,
                                              extra_vars,
                                              options);
 
+    if (pointers)
+        weechat_hashtable_free (pointers);
+    if (extra_vars)
+        weechat_hashtable_free (extra_vars);
+    if (options)
+        weechat_hashtable_free (options);
+
     API_RETURN_STRING_FREE(result);
 }
 
@@ -603,11 +611,19 @@ API_FUNC(string_eval_path_home)
         WEECHAT_SCRIPT_HASHTABLE_DEFAULT_SIZE,
         WEECHAT_HASHTABLE_STRING,
         WEECHAT_HASHTABLE_STRING);
+
     result = weechat_string_eval_path_home ((const char *)path,
                                             pointers,
                                             extra_vars,
                                             options);
 
+    if (pointers)
+        weechat_hashtable_free (pointers);
+    if (extra_vars)
+        weechat_hashtable_free (extra_vars);
+    if (options)
+        weechat_hashtable_free (options);
+
     API_RETURN_STRING_FREE(result);
 }
 
@@ -1876,8 +1892,12 @@ API_FUNC(key_bind)
                                            WEECHAT_SCRIPT_HASHTABLE_DEFAULT_SIZE,
                                            WEECHAT_HASHTABLE_STRING,
                                            WEECHAT_HASHTABLE_STRING);
+
     result = weechat_key_bind ((const char *)context, keys);
 
+    if (keys)
+        weechat_hashtable_free (keys);
+
     API_RETURN_INT(result);
 }
 
@@ -2427,6 +2447,9 @@ API_FUNC(hook_process_hashtable)
             (const char *)callback_name,
             (const char *)data));
 
+    if (options)
+        weechat_hashtable_free (options);
+
     API_RETURN_STRING(result);
 }
 
@@ -2746,8 +2769,12 @@ API_FUNC(hook_hsignal_send)
         WEECHAT_SCRIPT_HASHTABLE_DEFAULT_SIZE,
         WEECHAT_HASHTABLE_STRING,
         WEECHAT_HASHTABLE_STRING);
+
     result = weechat_hook_hsignal_send ((const char *)signal, hashtable);
 
+    if (hashtable)
+        weechat_hashtable_free (hashtable);
+
     API_RETURN_INT(result);
 }
 
@@ -4154,8 +4181,12 @@ API_FUNC(info_get_hashtable)
         WEECHAT_SCRIPT_HASHTABLE_DEFAULT_SIZE,
         WEECHAT_HASHTABLE_STRING,
         WEECHAT_HASHTABLE_STRING);
+
     result = weechat_info_get_hashtable ((const char *)info_name, hashtable);
 
+    if (hashtable)
+        weechat_hashtable_free (hashtable);
+
     weechat_php_hashtable_to_array (result, return_value);
 }
 
@@ -4894,8 +4925,12 @@ API_FUNC(hdata_update)
         WEECHAT_SCRIPT_HASHTABLE_DEFAULT_SIZE,
         WEECHAT_HASHTABLE_STRING,
         WEECHAT_HASHTABLE_STRING);
+
     result = weechat_hdata_update (hdata, pointer, hashtable);
 
+    if (hashtable)
+        weechat_hashtable_free (hashtable);
+
     API_RETURN_INT(result);
 }