diff --git a/ext/standard/tests/file/gh25232.phpt b/ext/standard/tests/file/gh25232.phpt
new file mode 100644
index 000000000000..d24064581fd2
--- /dev/null
+++ b/ext/standard/tests/file/gh25232.phpt
@@ -0,0 +1,30 @@
+--TEST--
+GH-25232: ftruncate() does not invalidate stat cache
+--FILE--
+<?php
+$file = __DIR__ . '/gh25232.tmp';
+file_put_contents($file, 'abcdefgh');
+$handle = fopen($file, 'r+');
+
+var_dump(filesize($file));
+var_dump(ftruncate($handle, 3));
+var_dump(filesize($file));
+
+fclose($handle);
+
+$obj = new SplFileObject($file, 'r+');
+var_dump(filesize($file));
+var_dump($obj->ftruncate(1));
+var_dump(filesize($file));
+?>
+--CLEAN--
+<?php
+@unlink(__DIR__ . '/gh25232.tmp');
+?>
+--EXPECT--
+int(8)
+bool(true)
+int(3)
+int(3)
+bool(true)
+int(1)
diff --git a/main/streams/plain_wrapper.c b/main/streams/plain_wrapper.c
index b6c117c52e20..00360688be3a 100644
--- a/main/streams/plain_wrapper.c
+++ b/main/streams/plain_wrapper.c
@@ -1018,10 +1018,16 @@ static int php_stdiop_set_option(php_stream *stream, int option, int value, void
 					if (!SetFilePointerEx(h, old_sz, NULL, FILE_BEGIN)) {
 						return PHP_STREAM_OPTION_RETURN_ERR;
 					}
-					return PHP_STREAM_OPTION_RETURN_OK;
 #else
-					return ftruncate(fd, new_size) == 0 ? PHP_STREAM_OPTION_RETURN_OK : PHP_STREAM_OPTION_RETURN_ERR;
+					if (ftruncate(fd, new_size) != 0) {
+						return PHP_STREAM_OPTION_RETURN_ERR;
+					}
 #endif
+					if (EG(active)) {
+						/* clear stat cache as size, mtime and ctime got changed */
+						php_clear_stat_cache(0, NULL, 0);
+					}
+					return PHP_STREAM_OPTION_RETURN_OK;
 				}
 			}
 			return PHP_STREAM_OPTION_RETURN_NOTIMPL;