PHP captcha Code Method _php Tutorial

Small series for everyone to share a beautiful PHP code class. Need friends can come over to the reference!

PHP Verification Code Class code

Width= $width;

$this->height= $height;

$this->counts= $counts;

$this->distrubcode= $distrubcode;

$this->fonturl= $fonturl;

$this->session= $this->sessioncode ();

Session_Start ();

$_session["code"]= $this->session;

}

function Imageout () {

$im = $this->createimagesource ();

$this->setbackgroundcolor ($im);

$this->set_code ($im);

$this->setdistrubecode ($im);

Imagegif ($im);

Imagedestroy ($im);

}

Private Function Createimagesource () {

Return Imagecreate ($this->width, $this->height);

}

Private Function SetBackgroundColor ($im) {

$bgcolor = Imagecolorallocate ($im, Rand (200,255), Rand (200,255), Rand (200,255));//±3?°?? E?

Imagefill ($im, 0,0, $bgcolor);

}

Private Function Setdistrubecode ($im) {

$count _h= $this->height;

$cou =floor ($count _h*2);

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

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

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

$jiaodu =rand (0,360);

$fontsize =rand (8,15);

$fonturl = $this->fonturl;

$originalcode = $this->distrubcode;

$countdistrub = strlen ($originalcode);

$dscode = $originalcode [rand (0, $countdistrub-1)];

$color = Imagecolorallocate ($im, Rand (40,140), Rand (40,140), Rand (40,140));

Imagettftext ($im, $fontsize, $jiaodu, $x, $y, $color, $fonturl, $dscode);

}

}

Private Function Set_code ($im) {

$width = $this->width;

$counts = $this->counts;

$height = $this->height;

$scode = $this->session;

$y =floor ($height/2) +floor ($height/4);

$fontsize =rand (30,35);

$fonturl = "C:\WINDOWS\FONTS\ADOBEGOTHICSTD-BOLD.OTF";//$this->fonturl;

$counts = $this->counts;

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

$char = $scode [$i];

$x =floor ($width/$counts) * $i +8;

$jiaodu =rand ( -20,30);

$color = Imagecolorallocate ($im, Rand (0,50), Rand (50,100), Rand (100,140));

Imagettftext ($im, $fontsize, $jiaodu, $x, $y, $color, $fonturl, $char);

}

}

Private Function Sessioncode () {

$originalcode = $this->distrubcode;

$countdistrub = strlen ($originalcode);

$_dscode = "";

$counts = $this->counts;

for ($j =0; $j < $counts; $j + +) {

$dscode = $originalcode [rand (0, $countdistrub-1)];

$_dscode.= $dscode;

}

return $_dscode;

}

}

PHP Captcha code example to build an output file code:

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

$imagecode =new Imagecode (150,2);

$imagecode->imageout ();

PHP Verification Code class is so simple, it can be used!

Source.

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