大氣漂亮的驗證碼

自己匯入字型，可以按照自己的額需要隨便修改。 字型建議是用粗的 class Imagecode{ private $width ; private $height; private $counts; private $distrubcode; private $fonturl; private $fonturlbg; private $session; /** * Enter description here... * * @param unknown_type $width 寬度 * @param unknown_type $height 高度 * @param unknown_type $counts 字元個數 * @param unknown_type $distrubcode 隨機字元範圍 * @param unknown_type $fonturl 嚴重碼字型 * @param unknown_type $fonturlbg 幹擾字元字型 */ function __construct($width = 120,$height = 30,$counts = 5,$distrubcode="1235467890qwertyuipkjhgfdaszxcvbnm",$fonturl="msyhbd.ttf",$fonturlbg='f.ttf'){ $this->width=$width; $this->height=$height; $this->counts=$counts; $this->distrubcode=$distrubcode; $this->fonturl=$fonturl; $this->fonturlbg=$fonturlbg ? $fonturlbg :$fonturl;//未設定幹擾字型時使用 $this->session=$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?°??é? 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->fonturlbg; $originalcode = $this->distrubcode; $countdistrub = strlen($originalcode); $dscode = $originalcode[rand(0,$countdistrub-1)]; $color = ImageColorAllocate($im, rand(40,140),rand(40,140),rand(40,140));//幹擾文字顏色 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); $fonturl=$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(0,200),rand(50,200),rand(100,240));//文字顏色 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; } } Header("Content-type: image/GIF"); $imagecode=new Imagecode(160,50); $imagecode->imageout(); 複製代碼

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