--- /dev/null
+--TEST--
+mime_content_type(): Testing wrong parameters
+--FILE--
+<?php
+
+mime_content_type(1);
+mime_content_type(NULL);
+mime_content_type(new stdclass);
+mime_content_type(array());
+mime_content_type('foo/inexistent');
+mime_content_type('');
+mime_content_type("\0");
+
+?>
+--EXPECTF--
+Warning: mime_content_type(): Can only process string or stream arguments in %s on line %d
+
+Warning: mime_content_type(): Can only process string or stream arguments in %s on line %d
+
+Warning: mime_content_type(): Can only process string or stream arguments in %s on line %d
+
+Warning: mime_content_type(): Can only process string or stream arguments in %s on line %d
+
+Warning: mime_content_type(foo/inexistent): failed to open stream: No such file or directory in %s on line %d
+
+Warning: mime_content_type(): Empty filename or path in %s on line %d
+
+Warning: mime_content_type(): Empty filename or path in %s on line %d