<?php
error_reporting(0);
$C_IMAGE_TYPE = 'png';
$C_WIDTH = 80;
$C_HEIGHT = 50;
$C_NUM_GENSIGN = 4;
$path_fonts = 'fonts/';
$EXT = strtoupper($HTTP_GET_VARS['ext']);
if($EXT=='GIF' || $EXT=='JPEG' || $EXT=='PNG') $C_IMAGE_TYPE = $EXT;
if(is_numeric($HTTP_GET_VARS['width']) && $HTTP_GET_VARS['width']>100 && $HTTP_GET_VARS['width']<500) $C_WIDTH = $HTTP_GET_VARS['width'];
if(is_numeric($HTTP_GET_VARS['height']) && $HTTP_GET_VARS['height']>100 && $HTTP_GET_VARS['height']<500) $C_HEIGHT = $HTTP_GET_VARS['height'];
if(is_numeric($HTTP_GET_VARS['qty']) && $HTTP_GET_VARS['qty']>2 && $HTTP_GET_VARS['qty']<10) $C_NUM_GENSIGN = $HTTP_GET_VARS['qty'];
//session_start();
session_register('securityCode');
$C_FONT_SIZE = intval($C_HEIGHT/(($C_HEIGHT/$C_WIDTH)*6));
$C_NUM_SIGN = intval(($C_WIDTH*$C_HEIGHT)/150);
$CODE = array();
$LETTERS = array('a','b','c','d','e','f','g','h','j','k','m','n','p','q','r','s','t','u','v','w','x','y','z','2','3','4','5','6','7','8','9');
$FIGURES = array('50','70','90','110','130','150','170','190','210');
$src = imagecreatetruecolor($C_WIDTH,$C_HEIGHT);
$fon = imagecolorallocate($src,255,255,255);
imagefill($src,0,0,$fon);
$FONTS = array();
$dir=opendir($path_fonts);
while($fontName = readdir($dir)) {
if($fontName != "." && $fontName != "..") {
if(strtolower(strrchr($fontName,'.'))=='.ttf') $FONTS[] = $path_fonts.$fontName;
}
}
closedir($dir);
if(sizeof($FONTS)>0) {
for($i=0;$i<$C_NUM_SIGN;$i++) {
$h = 1;
$color = imagecolorallocatealpha($src,rand(0,255),rand(0,255),rand(0,255),100);
$font = $FONTS[rand(0,sizeof($FONTS)-1)];
$letter = $LETTERS[rand(0,sizeof($LETTERS)-1)];
$size = rand($C_FONT_SIZE-2,$C_FONT_SIZE+2);
$angle = rand(0,60);
if($h == rand(1,2)) $angle = rand(360,300);
imagettftext($src,$size,$angle,rand($C_WIDTH*0.1,$C_WIDTH-$C_WIDTH*0.1),rand($C_HEIGHT*0.2,$C_HEIGHT),$color,$font,$letter);
}
for($i=0;$i<$C_NUM_GENSIGN;$i++) {
$h = 1;
$color = imagecolorallocatealpha($src,$FIGURES[rand(0,sizeof($FIGURES)-1)],$FIGURES[rand(0,sizeof($FIGURES)-1)],$FIGURES[rand(0,sizeof($FIGURES)-1)],rand(10,30));
$font = $FONTS[rand(0,sizeof($FONTS)-1)];
$letter = $LETTERS[rand(0,sizeof($LETTERS)-1)];
$size = rand($C_FONT_SIZE*2.1-1,$C_FONT_SIZE*2.1+1);
$x = (empty($x)) ? $C_WIDTH*0.08 : $x + ($C_WIDTH*0.8)/$C_NUM_GENSIGN+rand(0,$C_WIDTH*0.01);
$y = ($h == rand(1,2)) ? (($C_HEIGHT*1.15*3)/4) + rand(0,$C_HEIGHT*0.02) : (($C_HEIGHT*1.15*3)/4) - rand(0,$C_HEIGHT*0.02);
$angle = rand(5,20);
$CODE[] = $letter;
if($h == rand(0,10)) $letter = strtoupper($letter);
if($h == rand(1,2)) $angle = rand(355,340);
imagettftext($src,$size,$angle,$x,$y,$color,$font,$letter);
}
} else {
for($x=0;$x<$C_WIDTH;$x++) {
for($i=0;$i<($C_HEIGHT*$C_WIDTH)/1000;$i++){
$color = imagecolorallocatealpha($src,$FIGURES[rand(0,sizeof($FIGURES)-1)],$FIGURES[rand(0,sizeof($FIGURES)-1)],$FIGURES[rand(0,sizeof($FIGURES)-1)],rand(10,30));
imagesetpixel($src,rand(0,$C_WIDTH),rand(0,$C_HEIGHT),$color);
}
}
unset($x,$y);
for($i=0;$i<$C_NUM_GENSIGN;$i++) {
$h = 1;
$color = imagecolorallocatealpha($src,$FIGURES[rand(0,sizeof($FIGURES)-1)],$FIGURES[rand(0,sizeof($FIGURES)-1)],$FIGURES[rand(0,sizeof($FIGURES)-1)],rand(10,30));
$letter = $LETTERS[rand(0,sizeof($LETTERS)-1)];
$x = (empty($x)) ? $C_WIDTH*0.08 : $x + ($C_WIDTH*0.8)/$C_NUM_GENSIGN+rand(0,$C_WIDTH*0.01);
$y = ($h == rand(1,2)) ? (($C_HEIGHT*1)/4) + rand(0,$C_HEIGHT*0.1) : (($C_HEIGHT*1)/4) - rand(0,$C_HEIGHT*0.1);
$CODE[] = $letter;
if($h == rand(0,10)) $letter = strtoupper($letter);
imagestring($src,5,$x,$y,$letter,$color);
}
}
$HTTP_SESSION_VARS['securityCode'] = implode('',$CODE);
$_SESSION['securityCode'] = implode('',$CODE);
header ("Content-type: image/png");
imagepng($src);
imagedestroy($src);
?>
nhân ngày e onl trở lại sẽ hỗ trợ ae làm wap/web.
