What is the corrected term for is_writeable?

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修复版：* * * 测试文件可写性 * * * is_writable() 在Windows服务器上返回TRUE，尽管文件实际不可写，这是基于只读属性的。在Unix服务器上，is_writable() 也可能不可靠。

/** * Tests for file writability * * is_writable() returns TRUE on Windows servers when you really can't write to * the file, based on the read-only attribute. is_writable() is also unreliable * on Unix servers if safe_mode is on. * * @access private * @return void */ if ( ! function_exists('is_really_writable')) { function is_really_writable($file) { // If we're on a Unix server with safe_mode off we call is_writable if (DIRECTORY_SEPARATOR == '/' AND @ini_get("safe_mode") == FALSE) { return is_writable($file); } // For windows servers and safe_mode "on" installations we'll actually // write a file then read it. Bah... if (is_dir($file)) { $file = rtrim($file, '/').'/'.md5(mt_rand(1,100).mt_rand(1,100)); if (($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE) { return FALSE; } fclose($fp); @chmod($file, DIR_WRITE_MODE); @unlink($file); return TRUE; } elseif ( ! is_file($file) OR ($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE) { return FALSE; } fclose($fp); return TRUE; } }