Using GD image verification code to generate and save in PHP

Source: Internet
Author: User
Tags imagejpeg

    //Painting cloth$img= Imagecreatetruecolor ( -, +);//Three colors$black= Imagecolorallocate ($img,0x00,0x00,0x00);$green= Imagecolorallocate ($img,0x00,0xFF,0x00);$white= Imagecolorallocate ($img,0xFF,0xFF,0xFF);//Fill whiteImagefill ($img,0,0,$white);//Generate a random verification code$code=''; for($i=0;$i<4;$i++) {$code. = Rand (0,9);} Imagestring ($img,5,Ten,Ten,$code,$black);//Add noise interference. for($i=0;$i< -;$i+ +) {Imagesetpixel ($img, Rand (0, -), Rand (0, -) ,$black); Imagesetpixel ($img, Rand (0, -), Rand (0, -) ,$green);}//png output Verification code JPEG output to the current folderHeader"Content-type:image/png"); Imagepng ($img); Imagejpeg ($img,"./ok.jpeg", the); Imagedestroy ($img);```
     //Painting cloth$img= Imagecreatetruecolor ( -, +);//Three colors$black= Imagecolorallocate ($img,0x00,0x00,0x00);$green= Imagecolorallocate ($img,0x00,0xFF,0x00);$white= Imagecolorallocate ($img,0xFF,0xFF,0xFF);//Fill whiteImagefill ($img,0,0,$white);//Generate a random verification code$code=''; for($i=0;$i<4;$i++) {$code. = Rand (0,9);} Imagestring ($img,5,Ten,Ten,$code,$black);//Add noise interference. for($i=0;$i< -;$i+ +) {Imagesetpixel ($img, Rand (0, -), Rand (0, -) ,$black); Imagesetpixel ($img, Rand (0, -), Rand (0, -) ,$green);}//png output Verification code JPEG output to the current folderHeader"Content-type:image/png"); Imagepng ($img); Imagejpeg ($img,"./ok.jpeg", the); Imagedestroy ($img);

'). addclass (' pre-numbering '). Hide (); $ (this). addclass (' has-numbering '). Parent (). append ($numbering); for (i = 1; i <= lines; i++) {$numbering. Append ($ ('
  • '). Text (i)); }; $numbering. FadeIn (1700); }); });

    The above is introduced in PHP using GD image verification code generation and preservation, including the aspects of the content, I hope that the PHP tutorial interested in a friend helpful.

  • Contact Us

    The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

    If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

    A Free Trial That Lets You Build Big!

    Start building with 50+ products and up to 12 months usage for Elastic Compute Service

    • Sales Support

      1 on 1 presale consultation

    • After-Sales Support

      24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.