--TEST-- Test is_writable() and its alias is_writeable() function: usage variations - invalid file names --SKIPIF-- <?php if (substr(PHP_OS, 0, 3) != 'WIN') { // Skip if being run by root (files are always readable, writeable and executable) $filename = dirname(__FILE__)."/is_writable_root_check.tmp"; $fp = fopen($filename, 'w'); fclose($fp); if(fileowner($filename) == 0) { unlink ($filename); die('skip cannot be run as root'); } unlink($filename); } ?> --FILE-- <?php /* Prototype: bool is_writable ( string $filename ); Description: Tells whether the filename is writable. is_writeable() is an alias of is_writable() */ /* test is_writable() & is_writeable() with invalid arguments */ echo "*** Testing is_writable(): usage variations ***\n"; echo "\n*** Testing is_writable() with invalid filenames ***\n"; $misc_files = array( 0, 1234, -2.34555, TRUE, FALSE, NULL, " ", @array(), @$file_handle ); /* loop through to test each element in the above array is a writable file */ foreach( $misc_files as $misc_file ) { var_dump( is_writable($misc_file) ); var_dump( is_writeable($misc_file) ); clearstatcache(); } echo "Done\n"; ?> --EXPECTF-- *** Testing is_writable(): usage variations *** *** Testing is_writable() with invalid filenames *** bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) Warning: is_writable() expects parameter 1 to be a valid path, array given in %s on line %d NULL Warning: is_writeable() expects parameter 1 to be a valid path, array given in %s on line %d NULL bool(false) bool(false) Done