[PHP+FLASH]语音验证码(voice verification code)

最新推荐文章于 2021-10-14 19:56:29 发布

纳木错

最新推荐文章于 2021-10-14 19:56:29 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/neubuffer/article/details/16900787

本文介绍了一种使用PHP和Flash实现的语音验证码技术，该技术通过生成随机数字并播放对应的音频文件来传达验证码信息，有助于提高网站的安全性和用户体验。

看到很多国外网站上开始有了语音验证码功能，觉得挺好玩，而且也方便一些视力不好的人士，所以自己也尝试做了一个玩玩，是用的PHP+FLASH完成的，主要代码如下：

PHP文件

<? PHP

/* vim: set expandtab tabstop=4 shiftwidth=4 foldmethod=marker: */

/* *

* @Name voice_code.php

* @Note 语音验证码

* @Author arcow@21xp.com

* @Created 2007/4/26

* @Version 1.0

header ( ' Content-type: audio/mpeg ' );

// 随机种子

list ( $usec , $sec ) = explode ( ' ' , microtime ());

$randtime = ( float ) $sec + (( float ) $usec * 100000 );

srand ( $randtime );

// 随机验证码

$authnum = '' ;

// $str = 'abcdefghijkmnpqrstuvwxyz1234567890';

$str = ' 1234567890 ' ;

$l = strlen ( $str );

for ( $i = 1 ; $i <= 4 ; $i ++ )

{

$num = rand ( 0 , $l );

$authnum .= $str [ $num ];

}

// 把随机验证码记录到session

$_SESSION [ ' auth_code ' ] = $authnum ;

// 转成字符串，方便用数组调用

$code = strval ( $authnum );

readfile ( " sound/begin.mp3 " );

for ( $i = 0 ; $i < strlen ( $code ); $i ++ )

{

$soundNum = $code [ $i ];

readfile ( " sound/$soundNum.mp3 " );

}

readfile ( " sound/end.mp3 " );

Html文件

< html >

< head >

< title > 语音验证码示例文件(voice verification code Sample) by arcow@21xp.com </ title >

< script language ="javascript" >

var myimages=new Array();

function preloadimages()

{

for (i=0;i<preloadimages.arguments.length;i++)

{

myimages[i]=new Image();

myimages[i].src=preloadimages.arguments[i]

}

preloadimages("sound/audio.jpg");

</ script >

</ head >

< body >

< object classid ="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase ="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width ="0" height ="0" id ="code_play" align ="middle" >

< param name ="allowScriptAccess" value ="always" />

< param name ="FlashVars" value ="url=voice_code.php" />

< param name ="movie" value ="code_play.swf" />

< param name ="quality" value ="high" />

< param name ="bgcolor" value ="#ffffff" />

< embed id ="code_play" name ="code_play" src ="code_play.swf" FlashVars ="url=voice_code.php" quality ="high" bgcolor ="#ffffff" width ="0" height ="0" align ="middle" allowScriptAccess ="always" type ="application/x-shockwave-flash" pluginspage ="http://www.macromedia.com/go/getflashplayer" />

</ object >

< script language ="javascript" >

function readVoiceCode()

{

document.getElementById('code_img').src = "sound/audio.jpg";

document.getElementById('againListen').style.display='';

document.getElementById('readVoiceBtn').style.display='none';

window.document.code_play.SetVariable("isPlay", "1");

}

</ script >