Наткнулся на Хабре на код капчи которая ламает моск :
пришлось немного подправить, ибо код приведенный на хабре потерял символы…….
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | <?php class Captcha4d { const CHARS = 'WEafRTYIPAGHJKXBNM3479j'; protected $hypot = 5; protected $image = null; protected $_sin = array(); protected $text = ''; public function __construct() { $this->time = microtime(true); $this->generateCode(); } protected function generateCode() { $this->text = 'aG5'; } public function getText() { return $this->text; } protected function getProection($x, $y, $z) { $xx = 0.70710; $xz = 0.70710; $xy = 0.70710; $yx = 0.40824; $yz = 0.81649; $yy = -0.40824; $cx = $xx*$x + $xy*$y + $xz*$z - 5; $cy = $yx*$x + $yy*$y + $yz*$z + 20; return array( 'x' => $cx * $this->hypot, 'y' => $cy * $this->hypot ); } function zFunction($x,$y){ $z = imagecolorat($this->image,$y/2,$x/2)>0?3:0; if( $z != 0 ){ $z += -2+ 2* $this->_sin[($x+$this->startX)%30]; $this->_sin[($y+$this->startY)%30]; } $z += mt_rand(0,30)/50; return $z; } public function render() { $xx = 30; $yy = 60; $animation = new Imagick(); $animation->setFormat( "gif" ); $cw = new ImagickPixel("white"); $cb = new ImagickPixel("black"); $this->image = imageCreateTrueColor(100, 20); $whiteColor = imageColorAllocate($this->image,255,255,255); imageFilledRectangle($this->image,0,0,$yy * $this->hypot , $xx * $this->hypot, $whiteColor); $textColor = imageColorAllocate($this->image,0,0,0); imageString($this->image, 5, 3, 0, $this->text, $textColor); $cof = 2*3.141592654/$xx; for($x = 0; $x < $xx + 1; $x++){ $this->_sin[$x] = sin($x*$cof); } $this->startX = mt_rand(0,$xx); $this->startY = mt_rand(0,$yy); $draw = new ImagickDraw(); $countFrame = 25; for ( $i = 0; $i < $countFrame; $i++ ) { $this->startX += $xx / $countFrame; $coordinates = array(); for($x = 0; $x < $xx + 1; $x++){ for($y = 0; $y < $yy + 1; $y++){ $coordinates[$x][$y] = $this->getProection($x,$y,$this->zFunction($x,$y)); } } $animation->newImage( $yy * $this->hypot , $xx * $this->hypot, $cw); $im = new ImagickDraw(); $im->setFillColor($cw); $im->setStrokeColor($cb); $im->setStrokeAntialias(true); for($x = 0; $x < $xx; $x++){ for($y = 0; $y < $yy; $y++){ $coord = array(); $coord[] = $coordinates[$x][$y]; $coord[] = $coordinates[$x+1][$y]; $coord[] = $coordinates[$x+1][$y+1]; $coord[] = $coordinates[$x][$y+1]; $im->polygon($coord); } } $animation->drawImage($im); $animation->setImageDelay( 100/$countFrame ); } header( "Content-Type: image/gif" ); echo $animation->getImagesBlob();die(); } } $captcha = new Captcha4d(); $captcha->render(); ?> |