PHP文件上传类

/**

* 验证码类

*

*/

/**

* 用例如下

完整写法

include_once(' cls.captcha.new.php');

$seccode = 'asdf';

$code = new Captcha();

$code->code = $seccode;

$code->width = 150;

$code->height = 60;

$code->background = 1;

$code->adulterate = 1;

$code->ttf = 1;

$code->angle = 1;

$code->color = 1;

$code->size = 1;

$code->shadow = 1;

$code->animator = 0;

$code->display();

$code->fontpath = ROOT_PATH.'/includes/captcha/fonts/'; $code->imagepath = ROOT_PATH.'/includes/captcha/';

简单用法

include_once(ROOT_PATH.'/includes/cls.captcha.new.php'); $seccode = 'asdf';

$code = new Captcha();

$code->code = $seccode;

$code->display();

*/

class Captcha

{

var $code; //a-z 范围内随机

var $width = 150; //宽度

var $height = 60; //高度

var $background = 1; //随机图片背景

var $adulterate = 1; //随机背景图形

var $ttf = 1; //随机TTF 字体

var $angle = 0; //随机倾斜度

var $color = 1; //随机颜色

var $size = 0; //随机大小

var $shadow = 1; //文字阴影

var $animator = 0; //GIF 动画

var $fontpath = ''; //TTF字库目录

var $imagepath = ''; //图片目录

var $fontcolor;

var $im;

function __construct($options = array())

{

$this->Captcha($options);

}

function Captcha($options = array())

{

$this->fontpath = ROOT_PATH . '/includes/captcha/fonts/';

$this->imagepath = ROOT_PATH . '/includes/captcha/';

isset($options['width']) && $this->width = $options['width'];

isset($options['height'])&& $this->height= $options['height'];

}

function display($code)

{

session_cache_limiter('nocache');

$this->code = strtoupper($code);

if (function_exists('imagecreate') && function_exists('imagecolorset') && function_exists('imagecopyresized') && function_exists('imagecolorallocate') && function_exists('imagechar') && function_exists('imagecolorsforindex') && function_exists('imageline') && function_exists('imagecreatefromstring') && (function_exists('imagegif') || function_exists('imagepng') || function_exists('imagejpeg')))

{

$this->image();

}

else

{

$this->bitmap();

}

}

function image()

{

$bgcontent = $this->background();

header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past

if ($this->animator == 1 && function_exists('imagegif'))

{

import('gifmerge.lib');

$trueframe = mt_rand(1, 9);

for ($i = 0; $i <= 9; $i++)

{

$this->im = imagecreatefromstring($bgcontent);

$x[$i] = $y[$i] = 0;

$this->adulterate && $this->adulterate();

if ($i == $trueframe)

{

$this->ttf && function_exists('imagettftext') ? $this->ttffont() : $this->giffont();

$d[$i] = mt_rand(250, 400);

}

else

{

$this->adulteratefont();

$d[$i] = mt_rand(5, 15);

}

ob_start();

imagegif($this->im);

imagedestroy($this->im);

$frame[$i] = ob_get_contents();

ob_end_clean();

}

$anim = new GifMerge($frame, 255, 255, 255, 0, $d, $x, $y, 'C_MEMORY');

header('Content-type: image/gif');

echo $anim->getAnimation();

}

else

{

$this->im = imagecreatefromstring($bgcontent);

$this->adulterate && $this->adulterate();

$this->ttf && function_exists('imagettftext') ? $this->ttffont() : $this->giffont();

if (function_exists('imagepng'))

{

header('Content-type: image/png');

imagepng($this->im);

}

else

{

header('Content-type: image/jpeg');

imagejpeg($this->im, '', 100);

}

imagedestroy($this->im);

}

}

function background() {

$this->im = imagecreatetruecolor($this->width, $this->height);

$backgroundcolor = imagecolorallocate($this->im, 255, 255, 255);

$backgrounds = $c = array();

if ($this->background && function_exists('imagecreatefromjpeg') && function_exists('imagecolorat') && function_exists('imagecopymerge') && function_exists('imagesetpixel') && function_exists('imageSX') && function_exists('imageSY'))

{

if ($handle = @opendir($this->imagepath.'background/'))

{

while ($bgfile = @readdir($handle))

{

if (preg_match('/\.jpg$/i', $bgfile))

{

$backgrounds[] = $this->imagepath.'background/'.$bgfile;

}

}

@closedir($handle);

}

if ($backgrounds)

{

$imwm = imagecreatefromjpeg($backgrounds[array_rand($backgrounds)]);

$colorindex = imagecolorat($imwm, 0, 0);

$this->c = imagecolorsforindex($imwm, $colorindex);

$colorindex = imagecolorat($imwm, 1, 0);

imagesetpixel($imwm, 0, 0, $colorindex);

$c[0] = $c['red'];$c[1] = $c['green'];$c[2] = $c['blue'];

imagecopymerge($this->im, $imwm, 0, 0, mt_rand(0, 200 - $this->width), mt_rand(0, 80 - $this->height), imageSX($imwm), imageSY($imwm), 100);

imagedestroy($imwm);

}

}

if (!$this->background || !$backgrounds)

{

for ($i = 0; $i < 3; $i++)

{

$start[$i] = mt_rand(200, 255);$end[$i] = mt_rand(100, 150);$step[$i] = ($end[$i] - $start[$i]) / $this->width;$c[$i] = $start[$i];

}

for ($i = 0; $i < $this->width; $i++)

{

$color = imagecolorallocate($this->im, $c[0], $c[1], $c[2]);

imageline($this->im, $i, 0, $i-$angle, $this->height, $color);

$c[0] += $step[0];$c[1] += $step[1];$c[2] += $step[2];

}

$c[0] -= 20;$c[1] -= 20;$c[2] -= 20;

}

ob_start();

if (function_exists('imagepng'))

{

imagepng($this->im);

}

else

{

imagejpeg($this->im, '', 100);

}

imagedestroy($this->im);

$bgcontent = ob_get_contents();

ob_end_clean();

$this->fontcolor = $c;

return $bgcontent;

}

function adulterate()

{

$linenums = $this->height / 10;

for ($i=0; $i <= $linenums; $i++)

{

$color = $this->color ? imagecolorallocate($this->im, mt_rand(0, 255),

mt_rand(0, 255), mt_rand(0, 255)) : imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);

$x = mt_rand(0, $this->width);

$y = mt_rand(0, $this->height);

if (mt_rand(0, 1))

{

imagearc($this->im, $x, $y, mt_rand(0, $this->width), mt_rand(0, $this->height), mt_rand(0, 360), mt_rand(0, 360), $color);

}

else

{

imageline($this->im, $x, $y, $linex + mt_rand(0, $linemaxlong), $liney + mt_rand(0, mt_rand($this->height, $this->width)), $color);

}

}

}

function adulteratefont()

{

$seccodeunits = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';

$x = $this->width / 4;

$y = $this->height / 10;

$text_color = imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);

for ($i = 0; $i <= 3; $i++)

{

$adulteratecode = $seccodeunits{mt_rand(0, 26)};

imagechar($this->im, 5, $x * $i + mt_rand(0, $x - 10), mt_rand($y, $this->height - 10 - $y), $adulteratecode, $text_color);

}

}

function ttffont()

{

$seccode = $this->code;

$charset = $GLOBALS['charset'];

$seccoderoot = $this->fontpath;

$dirs = opendir($seccoderoot);

$seccodettf = array();

while ($entry = readdir($dirs))

{

if ($entry != '.' && $entry != '..' && in_array(strtolower(file_ext($entry)), array('ttf', 'ttc')))

{

$seccodettf[] = $entry;

}

}

$seccodelength = 4;

$widthtotal = 0;

for ($i = 0; $i < $seccodelength; $i++)

{

$font[$i]['font'] = $seccoderoot.$seccodettf[array_rand($seccodettf)];

$font[$i]['angle'] = $this->angle ? mt_rand(-30, 30) : 0;

$font[$i]['size'] = $this->width / 4;

$this->size && $font[$i]['size'] = mt_rand($font[$i]['size'] - $this->width / 40, $font[$i]['size'] + $this->width / 20);

$box = imagettfbbox($font[$i]['size'], 0, $font[$i]['font'], $seccode[$i]);

$font[$i]['zheight'] = max($box[1], $box[3]) - min($box[5], $box[7]);

$box = imagettfbbox($font[$i]['size'], $font[$i]['angle'], $font[$i]['font'], $seccode[$i]);

$font[$i]['height'] = max($box[1], $box[3]) - min($box[5], $box[7]);

$font[$i]['hd'] = $font[$i]['height'] - $font[$i]['zheight'];

$font[$i]['width'] = (max($box[2], $box[4]) - min($box[0], $box[6])) + mt_rand(0, $this->width / 8);

$font[$i]['width'] = $font[$i]['width'] > $this->width / $seccodelength ? $this->width / $seccodelength : $font[$i]['width'];

$widthtotal += $font[$i]['width'];

}

$x = mt_rand($font[0]['angle'] > 0 ? cos(deg2rad(90 - $font[0]['angle'])) * $font[0]['zheight'] : 1, $this->width - $widthtotal);

!$this->color && $text_color = imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);

for ($i = 0; $i < $seccodelength; $i++)

{

if ($this->color)

{

$this->fontcolor = array(mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));

$this->shadow && $text_shadowcolor = imagecolorallocate($this->im, 255 - $this->fontcolor[0], 255 - $this->fontcolor[1], 255 - $this->fontcolor[2]);

$text_color = imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);

}

elseif ($this->shadow)

{

$text_shadowcolor = imagecolorallocate($this->im, 255 -

$this->fontcolor[0], 255 - $this->fontcolor[1], 255 - $this->fontcolor[2]);

}

$y = $font[0]['angle'] > 0 ? mt_rand($font[$i]['height'], $this->height) : mt_rand($font[$i]['height'] - $font[$i]['hd'], $this->height - $font[$i]['hd']);

$this->shadow && imagettftext($this->im, $font[$i]['size'], $font[$i]['angle'], $x + 1, $y + 1, $text_shadowcolor, $font[$i]['font'], $seccode[$i]);

imagettftext($this->im, $font[$i]['size'], $font[$i]['angle'], $x, $y, $text_color, $font[$i]['font'], $seccode[$i]);

$x += $font[$i]['width'];

}

}

function giffont()

{

$seccode = $this->code;

$seccodedir = array();

if (function_exists('imagecreatefromgif'))

{

$seccoderoot = $this->imagepath.'gif/';

$dirs = opendir($seccoderoot);

while ($dir = readdir($dirs))

{

if ($dir != '.' && $dir != '..' && is_file($seccoderoot.$dir.'/9.gif'))

{

$seccodedir[] = $dir;

}

}

}

$widthtotal = 0;

for ($i = 0; $i <= 3; $i++)

{

$this->imcodefile = $seccodedir ? $seccoderoot.$seccodedir[array_rand($seccodedir)].'/'.strtolower($seccode[$i]).'.gif' : '';

if (!empty($this->imcodefile) && is_file($this->imcodefile))

{

$font[$i]['file'] = $this->imcodefile;

$font[$i]['data'] = getimagesize($this->imcodefile);

$font[$i]['width'] = $font[$i]['data'][0] + mt_rand(0, 6) - 4;

$font[$i]['height'] = $font[$i]['data'][1] + mt_rand(0, 6) - 4;

$font[$i]['width'] += mt_rand(0, $this->width / 5 - $font[$i]['width']);

$widthtotal += $font[$i]['width'];

}

else

{

$font[$i]['file'] = '';

$font[$i]['width'] = 8 + mt_rand(0, $this->width / 5 - 5);

$widthtotal += $font[$i]['width'];

}

}

$x = mt_rand(1, $this->width - $widthtotal);

for ($i = 0; $i <= 3; $i++)

{

$this->color && $this->fontcolor = array(mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));

if ($font[$i]['file'])

{

$this->imcode = imagecreatefromgif($font[$i]['file']);

if ($this->size)

{

$font[$i]['width'] = mt_rand($font[$i]['width'] - $this->width / 20, $font[$i]['width'] + $this->width / 20);

$font[$i]['height'] = mt_rand($font[$i]['height'] - $this->width / 20, $font[$i]['height'] + $this->width / 20);

}

$y = mt_rand(0, $this->height - $font[$i]['height']);

if ($this->shadow)

{

$this->imcodeshadow = $this->imcode;

imagecolorset($this->imcodeshadow, 0 , 255 - $this->fontcolor[0], 255 - $this->fontcolor[1], 255 - $this->fontcolor[2]);

imagecopyresized($this->im, $this->imcodeshadow, $x + 1, $y + 1, 0, 0, $font[$i]['width'], $font[$i]['height'], $font[$i]['data'][0], $font[$i]['data'][1]);

}

imagecolorset($this->imcode, 0 , $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);

imagecopyresized($this->im, $this->imcode, $x, $y, 0, 0, $font[$i]['width'], $font[$i]['height'], $font[$i]['data'][0], $font[$i]['data'][1]);

}

else

{

$y = mt_rand(0, $this->height - 20);

if ($this->shadow)

{

$text_shadowcolor = imagecolorallocate($this->im, 255 - $this->fontcolor[0], 255 - $this->fontcolor[1], 255 - $this->fontcolor[2]);

imagechar($this->im, 5, $x + 1, $y + 1, $seccode[$i], $text_shadowcolor);

}

$text_color = imagecolorallocate($this->im, $this->fontcolor[0], $this->fontcolor[1], $this->fontcolor[2]);

imagechar($this->im, 5, $x, $y, $seccode[$i], $text_color);

}

$x += $font[$i]['width'];

}

}

function bitmap()

{

$numbers = array

(

'2' => array('fc','c0','60','30','18','0c','cc','cc','78','00'),

'3' => array('78','8c','0c','0c','38','0c','0c','8c','78','00'),

'4' => array('00','3e','0c','fe','4c','6c','2c','3c','1c','1c'),

'5' => array('78','8c','0c','0c','4c','78','60','60','7c','00'),

'7' => array('30','30','38','18','18','18','1c','8c','fc','00'),

'A' => array('00','EE','6c','7c','6c','6c','28','38','f8','00'),

'C' => array('00','38','64','c0','c0','c0','c4','64','3c','00'),

'E' => array('00','fe','62','62','68','78','6a','62','fe','00'),

'F' => array('00','f8','60','60','68','78','6a','62','fe','00'),

'H' => array('00','e7','66','66','66','7e','66','66','e7','00'),

'K' => array('00','f3','66','66','7c','78','6c','66','f7','00'),

'M' => array('00','f7','63','6b','6b','77','77','77','e3','00'),

'N' => array('00','ec','4c','54','54','54','64','64','ee','00'),

'P' => array('00','f8','60','60','7c','66','66','66','fc','00'),

'R' => array('00','f3','66','6c','7c','66','66','66','fc','00'),

'T' => array('00','78','30','30','30','30','b4','b4','fc','00'),

'V' => array('00','1c','1c','36','36','36','63','63','f7','00'),

'W' => array('00','36','36','36','77','7f','6b','63','f7','00'),

'X' => array('00','f7','66','3c','18','18','3c','66','ef','00'),

'Y' => array('00','7e','18','18','18','3c','24','66','ef','00'),

);

foreach ($numbers as $i => $number)

{

for ($j = 0; $j < 6; $j++)

{

$a1 = substr('012', mt_rand(0, 2), 1).substr('012345', mt_rand(0, 5), 1);

$a2 = substr('012345', mt_rand(0, 5), 1).substr('0123', mt_rand(0,

mt_rand(0, 1) == 1 ? array_push($numbers[$i], $a1) : array_unshift($numbers[$i], $a1);

mt_rand(0, 1) == 0 ? array_push($numbers[$i], $a1) : array_unshift($numbers[$i], $a2);

}

}

$bitmap = array();

for ($i = 0; $i < 20; $i++)

{

for ($j = 0; $j <= 3; $j++)

{

$bytes = $numbers[$this->code[$j]][$i];

$a = mt_rand(0, 14);

array_push($bitmap, $bytes);

}

}

for ($i = 0; $i < 8; $i++)

{

$a = substr('012345', mt_rand(0, 2), 1) . substr('012345', mt_rand(0, 5), 1);

array_unshift($bitmap, $a);

array_push($bitmap, $a);

}

$image = pack('H*', '424d9e000000000000003e000000280000002000000018000000010001000000'.

'0000600000000000000000000000000000000000000000000000FFFFFF00'.implode( '', $bitmap));

header('Content-Type: image/bmp');

echo $image;

}

}

/**

* 生成随机串

*

* @param int $len

* @return string

function generate_code($len = 4)

{

$chars = '23457acefhkmprtvwxy';

for ($i = 0, $count = strlen($chars); $i < $count; $i++) {

$arr[$i] = $chars[$i];

}

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

shuffle($arr);

$code = substr(implode('', $arr), 5, $len);

return $code;

}

?>