Closes bug #47667

ext/zip/lib/zip_open.c

@@ -65,8 +65,11 @@ zip_open(const char *fn, int flags, int *zep)
     struct zip_cdir *cdir;
     int i;
     off_t len;
-    
 
+    if (flags & ZIP_OVERWRITE) {
+	return _zip_allocate_new(fn, zep);
+    }
+    
     switch (_zip_file_exists(fn, flags, zep)) {
     case -1:
 			if (!(flags & ZIP_OVERWRITE)) {

ext/zip/tests/bug47667.phpt

@@ -0,0 +1,40 @@
+--TEST--
+Bug #47667 (ZipArchive::OVERWRITE seems to have no effect)
+--SKIPIF--
+<?php
+/* $Id$ */
+if(!extension_loaded('zip')) die('skip');
+?>
+--FILE--
+<?php
+$thisdir = dirname(__FILE__);
+$filename = $thisdir . "/bug47667.zip";
+
+$zip = new ZipArchive();
+if ($zip->open($filename, ZipArchive::CREATE) !== true) {
+	exit("Unable to open the zip file");
+} else {
+	$zip->addFromString('foo.txt', 'foo bar foobar');
+	$zip->close();
+}
+
+for ($i = 0; $i < 10; $i++) {
+	$zip = new ZipArchive();
+	if ($zip->open($filename, ZipArchive::OVERWRITE) !== true) {
+		exit("Unable to open the zip file");
+	}	
+	$zip->addFromString("foo_{$i}.txt", 'foo bar foobar');
+	$zip->close();
+}
+
+$zip = new ZipArchive();
+if ($zip->open($filename, ZipArchive::CREATE) !== true) {
+	exit("Unable to open the zip file");
+}
+
+echo "files: " , $zip->numFiles;
+
+unlink($filename);
+
+--EXPECT--
+files: 1