Solution to garbled image output from php: First create an image output code named [showimg.php]; then customize the function [rand_create()] to create a random verification code image; finally, display the verification code when needed Just add the link [
Solution to garbled picture output by php:
First, create an image output code named
showimg.php<?php rand_create(); function rand_create() { srand((double)microtime()*1000000); $im = imagecreate(62,20); $black = ImageColorAllocate($im, 0,0,0); //RGB黑色标识符 $white = ImageColorAllocate($im, 255,255,255); //RGB白色标识符 $gray = ImageColorAllocate($im, 200,200,200); //RGB灰色标识符 imagefill($im,0,0,$gray); while(($randval=rand()%100000)<10000);{ imagestring($im, 5, 10, 3, $randval, $black); } //加入干扰象素 for($i=0;$i<200;$i++){ $randcolor = ImageColorallocate($im,rand(0,255),rand(0,255),rand(0,255)); imagesetpixel($im, rand()%70 , rand()%30 , $randcolor); } //输出验证图片 ImagePNG($im); } ?>where the custom function
rand_create()is created A random-shaped verification code image. At first, I wanted to directly reference this code into the html language, that is:<html> <head><title>输入验证码</title><head> <body> <?php ******* ?> // 即上面的验证码图像生成函数 </body> </html>The result showed a garbled code similar to the following:
[quote]嘘NG IHDR>?~&aPLTE???热?锳′潽罽北??2?w/{2[緵?Y)描锽顖bT Quanchu陔 Yeah|gnk??霭:1l#?@ E灪勌R鼀chlor骪?憸K\Dun8 peak 9n F暋痖|?Y埄?credit;冡c椥楏鬀6^??訳??娆苀*邝拀1?h.@?_ ?Wshun{弝_L?闍鄈觨?"L8Y2?炂F0?欥_3=孼?D?{(四 tie 5?1宄红饹b0UóB=*魔聬夡屋0黄Gd#?苙??巀>?q!q?Mp璔n贉戈Y篎j ▲2? ??载?愋?(訨Oa忟K?oK迉:嫇K carryingL堨衦絇炆?V贘U鎎|鞇浭?eNt?潊?3????Zphase t?戈秋癭鳋??jv见迬?S1 sense E?gc2啨蚧=?w湋m3U嘊_J熖Specialㄔ訨?B1?sIDATx渃`B&T0哓0? B誊?摮qh`eZ g B碈?8vomitLs @?hft1?m?朿呖@ Trend??I??;? Y?Edge屵z&~0?EL戦gun,$?Au坄?`??A?濸slF"俍Q嵧v?? k鄗嘹?犚HN蹖鎃?P堹[/quote]
[color=red][b]It turns out[/b][/color], this is a segment program, and
[b]The program must be located at the very beginning, even if there is a blank line in front of it, and after the graphics are output, no other content can be output [/b]. In this case, a page, Only one picture can be displayed. The solution to theproblem is, create another page and add the link
, it is easily solved.
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