--- php-5.3.10/ext/standard/dl.c_orig	Sun Jan  1 05:15:04 2012
+++ php-5.3.10/ext/standard/dl.c	Wed Feb  8 11:25:26 2012
@@ -132,12 +132,30 @@
 		}
 		libpath = estrdup(filename);
 	} else if (extension_dir && extension_dir[0]) {
-		int extension_dir_len = strlen(extension_dir);
+		/* if extension_dir supports multiple paths, then look for the extension in each of them */
+		static const char path_sep[] = { ZEND_PATHS_SEPARATOR, 0 };
+		struct stat filetype;
+		char* extdir = NULL;
+		if ((extdir = strtok_r(extension_dir, path_sep, &extension_dir)) != NULL) {
+			do {
+				int extension_dir_len = strlen(extdir);
+				if (IS_SLASH(extdir[extension_dir_len-1])) {
+					spprintf(&libpath, 0, "%s%s", extdir, filename);
+				} else {
+					spprintf(&libpath, 0, "%s%c%s", extdir, DEFAULT_SLASH, filename);
+				}
 
-		if (IS_SLASH(extension_dir[extension_dir_len-1])) {
-			spprintf(&libpath, 0, "%s%s", extension_dir, filename); /* SAFE */
+				if (stat(libpath, &filetype) == 0) {
+					break;
+				}
+			} while (extension_dir && (extdir = strtok_r(NULL, path_sep, &extension_dir)) != NULL);
 		} else {
-			spprintf(&libpath, 0, "%s%c%s", extension_dir, DEFAULT_SLASH, filename); /* SAFE */
+			int extension_dir_len = strlen(extension_dir);
+			if (IS_SLASH(extension_dir[extension_dir_len-1])) {
+				spprintf(&libpath, 0, "%s%s", extension_dir, filename);
+			} else {
+				spprintf(&libpath, 0, "%s%c%s", extension_dir, DEFAULT_SLASH, filename);
+			}
 		}
 	} else {
 		return FAILURE; /* Not full path given or extension_dir is not set */