<?php
/* Set English Digital Verification code */
/*
Session_Start ();
$image =imagecreatetruecolor (100,30);
Create a background color of white
$bgcolor =imagecolorallocate ($image, 255, 255, 255);
Fill the background with white
Imagefill ($image, 0, 0, $bgcolor);
$capth _code= ';
*/
/* Generate a pure digit verification code */
/*
for ($i =0; $i <4; $i + +) {
$fontsize =6;//Font Size
Set Dark font Color
$fontcolor =imagecolorallocate ($image, Rand (0,120), Rand (0,120), Rand (0,120));
$fontcontent =rand (0,9);//Verification Code content
$capth _code.= $fontcontent;
The coordinates of the text placement
$x = ($i *100/4) +rand (5,10);
$y =rand (5,10);
Imagestring ($image, $fontsize, $x, $y, $fontcontent, $fontcolor);
}
*/
/* Generate English alphabet and digital verification code
for ($i =0; $i <4; $i + +) {
$fontsize =6;//Font Size
Set Dark font Color
$fontcolor =imagecolorallocate ($image, Rand (0,120), Rand (0,120), Rand (0,120));
$data = ' abcdefghigklmnopqrstuvwxyz0123456789 ';
$fontcontent =substr ($data, Rand (0,strlen ($DATA)), 1);//Verification Code content
$capth _code.= $fontcontent;
The coordinates of the text placement
$x = ($i *100/4) +rand (5,10);
$y =rand (5,10);
Imagestring ($image, $fontsize, $x, $y, $fontcontent, $fontcolor);
}
$_session[' Authcode ']= $capth _code;
Draw interference elements
Draw interference points
for ($i =0; $i <200; $i + +) {
Set the color of a light point
$pointcolor =imagecolorallocate ($image, Rand (50,200), Rand (50,200), Rand (50,200));
Imagesetpixel ($image, Rand (1,99), Rand (1,29), $pointcolor);
}
Draw interference Lines
for ($i =0; $i <3; $i + +) {
$linecolor =imagecolorallocate ($image, Rand (1,99), Rand (1,99), Rand (1,99));
Imageline ($image, Rand (1,99), Rand (1,29), Rand (1,99), Rand (1,29), $linecolor);
}
Output picture Information
Header (' content-type:image/png ');
Imagepng ($image);
Imagedestroy ($image);
*/
/* Generate Chinese Verification code */
Session_Start ();
$image =imagecreatetruecolor (200,60);//Chinese is larger than
$bgcolor =imagecolorallocate ($image, 255, 255, 255);
Fill the background with white
Imagefill ($image, 0, 0, $bgcolor);
$wordstr = ' Ah Ae, alas, Ai cancer ai ai-ai, I press the Dark bank amine, the Alang ao ao regretful Australian ba grilled ba-ba scar ba-ba-da-pai-pa-i-bai-Bai-the-beat-PA class moved to the board version of the plate to play with the flap half of the Bang Bang list bladder tied rod pound clam pound beside slander bracts Bao Bao Bo Bao Pao treasure hold report storm Leopard Bao Burst cup tablet sad North generation back shellfish barium times jackal prepared exhausted bake by Ben benzene Ben stupid blow-up pump burst nose than the humble pen bi grate cover Die Jingbirok, the harm will be a wall arm to avoid BIPBA whip edge, make a flat change Bian Shenqiu distinguish and debate braid standard Puma fat Table turtle Suppress not flat bin on bin bin Champagne Bing Bing ice handle bing cake bing disease and glass pineapple sowing pot Pobob beat platinum foil Bo Silk back to the bo bo fishing bu bu feeding patch Not cloth Step book department wipe guess cutting Choi cai Choi meal Ginseng silkworm residual ashamed miserable Cang bin Cang the operation of the rough groove Cao Grass toilet side book test layer rubbing fork stubble Tea Check the difference between the astonished demolition of the Jackal mixed with cicada greedy slander to shovel production chatter Chang Hanzi field taste Chang Chang long to repay the bowel factory open sing the song of Chao Chao the nest noisy speculation car pull the button Chen Chen Chen Dust morning greetings Shen Chan while lining support said City Orange into a ride to punish Cheng Cheng the scale to eat crazy hold spoon pool late relaxation shame teeth waste ruler red fin Chi-Chong Worm Chong Pet reward domain lift Catinaccio thick sorrow raise revenge silk Look at the ugly smelly first out of the kitchen energetically hoe chu in addition to Chu Chu twitching touch of the river in the rafters to pass the boat surge of sores window building bed Chong Blow cooking hammer Vertical chun alcohol lip chun pure stupid poke flaw ci ci 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broken satin heap against the pier ton squat Dunton hoarding blunt shield dun duo duo Snatch Stack hide Stomp rudder chop lazy fall moth E goose Russian amount of bad ah choke to suppress e-er and son ear bait Behr Two-second rounds of spent valve method June fan Fan alum Vanadium fan all annoying anti-return fan-Fang Fang Fatty room anti-nuisance imitation visit textile put phenanthrene non-brown fly fat bandits dis bark lung waste boiling fee Fen Fen fen powder fen angry dung Feng Feng seal maple Bee Feng Feng wind crazy feng Sewing, Feng Buddha whether the husband apply the skin hatch, the body of the body of fluorine fu fu metre Francis Fu Fu Fu, the arm of the axe of the intestine house rot to the deputy Fu Fu Fu complex Fu Father Belly negative rich obituary attached to impurity GA The change calcium cover gai gan gan rod gan pole liver drive sense stalk dare Gan gang gang just steel cylinder anus Hillock port bar high paste lamb cake to make a pick draft sue GE Pigeon pimple cut 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Zou take a beating rent the foot of a group of fathers curse block drill to the most guilty of the crime of the Zozzo of yesterday, the oak contrived sitting seat ';
$wordarr =str_split ($WORDSTR, 3);//utf-8 encoding, Chinese is 3 bits, if not utf-8 encoding, you need to convert, because the GD library only supports this one encoding
$capth _code= ';
$fontface = ' fzytk. TTF ';
/* Chinese Verification Code */
for ($i =0; $i <4; $i + +) {
$fontcolor =imagecolorallocate ($image, Rand (0,120), Rand (0,120), Rand (0,120));
$index =rand (0,count ($wordarr));
$CN = $wordarr [$index];
$capth _code.= $CN;
Imagettftext ($image, Mt_rand (20,24), Mt_rand ( -60,60), (40* $i +20), Mt_rand (30,35), $fontcolor, $fontface, $CN);
}
$_session[' Authcode ']= $capth _code;
Draw interference elements
Draw interference points
for ($i =0; $i <200; $i + +) {
Set the color of a light point
$pointcolor =imagecolorallocate ($image, Rand (50,200), Rand (50,200), Rand (50,200));
Imagesetpixel ($image, Rand (1,199), Rand (1,59), $pointcolor);
}
Draw interference Lines
for ($i =0; $i <3; $i + +) {
$linecolor =imagecolorallocate ($image, Rand (1,99), Rand (1,99), Rand (1,99));
Imageline ($image, Rand (1,199), Rand (1,59), Rand (1,199), Rand (1,59), $linecolor);
}
Output picture Information
Header (' content-type:image/png ');
Imagepng ($image);
Imagedestroy ($image);
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