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PHP制作安装程序的原理与步骤详细讲解

Jun 13, 2016 am 10:39 AM
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本文讲解PHP制作安装程序的原理与步骤
1、制作PHP安装程序的原理
        PHP程序的安装原理就是将数据库结构和内容导入到相应的数据库中,从这个过程中重新配置连接数据库的参数和文件,为了保证不被别人恶意使用安装文件,当安装完成后需要修改安装文件。
2、制作PHP安装程序的步骤
        step1 检查目录或文件的权限
        step2 修改或填加配置文件
        step3 检查配置文件正确性
        step4 导入数据库
        step5 锁定或删除安装文件
3、制作安装用到的PHP函数
        检查文件是否可写,返回布尔值:is_writable("data/config.php");
        检查文件是否可读,返回布尔值:is_readable("data/config.php");
        fopen() 文件操作函数,打开一个文件或新建
        fwrite() 文件操作函数,写入内容到文件
        rename() 文件操作函数,给文件改名
4、注意事项
        (1).对文件和相关文件夹权限进行检查,如缓存,生成文件,配置文件
        (2).安装文件尽可能独立,可删除,可改名。
        (3).数据库导入时,需检查:
                a.检查是否有建立数据库的权限
                b.是否同名数据库的存在
                c.考虑到数据库导入的大小是否分段处理
         (4).检查配置环境,各种模块的支持情况,如:gd2, pdo,rewirte等
5、实例代码

  1. $files="data/config.php";
  2. if(!is_writable($files)){
  3. echo "不可写!!!";
  4. }else{
  5. echo "可写";
  6. }
  7. if(isset($_POST[install])){
  8. $config_str = "
  9. $config_str .= " ";
  10. $config_str .= $mysql_host = " . $_POST[db_host] . ";;
  11. $config_str .= " ";
  12. $config_str .= $mysql_user = " . $_POST[db_user] . ";;
  13. $config_str .= " ";
  14. $config_str .= $mysql_pass = " . $_POST[db_pass] . ";;
  15. $config_str .= " ";
  16. $config_str .= $mysql_dbname = " . $_POST[db_dbname] . ";;
  17. $config_str .= " ";
  18. $config_str .= $mysql_tag = " . $_POST[db_tag] . ";;
  19. $config_str .= " ";
  20. $config_str .= ?>;
  21. $ff = fopen($files, "w ");
  22. fwrite($ff, $config_str);
  23. //=====================
  24. include_once ("data/config.php"); //嵌入配置文件
  25. if (!@$link = mysql_connect($mysql_host, $mysql_user, $mysql_pass)) { //检查数据库连接情况
  26. echo "数据库连接失败! 请返回上一页检查连接参数 返回修改";
  27. } else {
  28. mysql_query("CREATE DATABASE `$mysql_dbname`");
  29. mysql_select_db($mysql_dbname);
  30. $sql_query[] = "CREATE TABLE `" . $mysql_tag . "admin_log1` (
  31. `id` int(8) unsigned NOT NULL auto_increment,
  32. `username` varchar(40) NOT NULL COMMENT 操作用户名称,
  33. `types` varchar(60) NOT NULL,
  34. PRIMARY KEY (`id`)
  35. ) ;";
  36. $sql_query[] = "CREATE TABLE `" . $mysql_tag . "admin_log2` (
  37. `id` int(8) unsigned NOT NULL auto_increment,
  38. `username` varchar(40) NOT NULL COMMENT 操作用户名称,
  39. `types` varchar(60) NOT NULL,
  40. PRIMARY KEY (`id`)
  41. ) ;";
  42. $sql_query[] = "CREATE TABLE `" . $mysql_tag . "admin_log3` (
  43. `id` int(8) unsigned NOT NULL auto_increment,
  44. `username` varchar(40) NOT NULL COMMENT 操作用户名称,
  45. `types` varchar(60) NOT NULL,
  46. PRIMARY KEY (`id`)
  47. ) ;";
  48. foreach($sql_query as $val){
  49. mysql_query($val);
  50. }
  51. echo "<script>alert(安装成功!);location.href=index.php</script>";
  52. rename("install.php","install.lock");
  53. }
  54. }
  55. ?>

  56. 填写主机:
  57. 用 户 名:
  58. 密  码:
  59. 数据库名:
  60. 数据前缀:

希望本文能对你有所收获。
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