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Current Path : /home/zqegovsj/www/us3web.haibo.com.cn/a_web_bak/
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Current File : /home/zqegovsj/www/us3web.haibo.com.cn/a_web_bak/auth_image.php

<?php

session_start();

//�����λ������֤��

mt_srand((double)microtime()*1000000);

$AuthNum = mt_rand();

if($AuthNum<1000){$AuthNum *= 1000;}

$AuthNum = substr(strrev($AuthNum),-4);

//session_register('AuthNum');

$_SESSION['Angus'] = $AuthNum;



Header("Content-type:image/png");

$im = ImageCreate(42,20);

$black = ImageColorAllocate($im,222,222,222);

$white = ImageColorAllocate($im,223,0,12);

$white2 = ImageColorAllocate($im,255,255,255);



//����λ����֤�����picture 

//λ�ý���

for ($i = 0; $i < 4; $i++) {

        if ($i%2 == 0){$top = 1;}else{$top = 3;}

        imagestring($im, 5, 10*$i+1, $top, substr($AuthNum,$i,1), $white); 

}



//�������������

//ImageLine($im,0,11,40,6,$white2);

//����������ص�

//for($i=0;$i<150;$i++){ imagesetpixel($im, rand()%70 , rand()%30 , $white2); } 

ImagePng($im);

ImageDestroy($im);



?>