file_put_contents.php.svn-base

来自「PHP 知识管理系统（基于树结构的知识管理系统）, 英文原版的PHP源码。」· SVN-BASE 代码 · 共 104 行

<?php
// +----------------------------------------------------------------------+
// | PHP Version 4                                                        |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2004 The PHP Group                                |
// +----------------------------------------------------------------------+
// | This source file is subject to version 3.0 of the PHP license,       |
// | that is bundled with this package in the file LICENSE, and is        |
// | available at through the world-wide-web at                           |
// | http://www.php.net/license/3_0.txt.                                  |
// | If you did not receive a copy of the PHP license and are unable to   |
// | obtain it through the world-wide-web, please send a note to          |
// | [e-mail] so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Authors: Aidan Lister <[e-mail]>                                |
// +----------------------------------------------------------------------+
//
// $Id$


if (!defined('FILE_USE_INCLUDE_PATH')) {
    define('FILE_USE_INCLUDE_PATH', 1);
}

if (!defined('FILE_APPEND')) {
    define('FILE_APPEND', 8);
}


/**
 * Replace file_put_contents()
 *
 * @category    PHP
 * @package     PHP_Compat
 * @link        http://php.net/function.file_put_contents
 * @author      Aidan Lister <[e-mail]>
 * @version     $Revision$
 * @internal    resource_context is not supported
 * @since       PHP 5
 * @require     PHP 4.0.0 (user_error)
 */
if (!function_exists('file_put_contents')) {
    function file_put_contents($filename, $content, $flags = null, $resource_context = null)
    {
        // If $content is an array, convert it to a string
        if (is_array($content)) {
            $content = implode('', $content);
        }

        // If we don't have a string, throw an error
        if (!is_scalar($content)) {
            user_error('file_put_contents() The 2nd parameter should be either a string or an array',
                E_USER_WARNING);
            return false;
        }

        // Get the length of data to write
        $length = strlen($content);

        // Check what mode we are using
        $mode = ($flags & FILE_APPEND) ?
                    'a' :
                    'w';

        // Check if we're using the include path
        $use_inc_path = ($flags & FILE_USE_INCLUDE_PATH) ?
                    true :
                    false;

        // Open the file for writing
        if (($fh = @fopen($filename, $mode, $use_inc_path)) === false) {
            user_error('file_put_contents() failed to open stream: Permission denied',
                E_USER_WARNING);
            return false;
        }

        // Write to the file
        $bytes = 0;
        if (($bytes = @fwrite($fh, $content)) === false) {
            $errormsg = sprintf('file_put_contents() Failed to write %d bytes to %s',
                            $length,
                            $filename);
            user_error($errormsg, E_USER_WARNING);
            return false;
        }

        // Close the handle
        @fclose($fh);

        // Check all the data was written
        if ($bytes != $length) {
            $errormsg = sprintf('file_put_contents() Only %d of %d bytes written, possibly out of free disk space.',
                            $bytes,
                            $length);
            user_error($errormsg, E_USER_WARNING);
            return false;
        }

        // Return length
        return $bytes;
    }
}

?>