static function buildImageVerify($length=4, $mode=3, $type='png', $width=120, $height=60, $size='25',$verifyName='verify') {
$fontpath= dirname(__PATH__).'/Public/Font/font.ttf';
import('ORG.Util.String');
$randval = String::randString($length, $mode);
session($verifyName, md5($randval));
$width = ($length * 10 + 10) > $width ? $length * 10 + 10 : $width;
if ($type != 'gif' && function_exists('imagecreatetruecolor')) {
$im = imagecreatetruecolor($width, $height);
} else {
$im = imagecreate($width, $height);
}
$r = Array(225, 255, 255, 223);
$g = Array(225, 236, 237, 255);
$b = Array(225, 236, 166, 125);
$key = mt_rand(0, 3);
$backColor = imagecolorallocate($im, $r[$key], $g[$key], $b[$key]); //背景色（随机）
$borderColor = imagecolorallocate($im, 100, 100, 100); //边框色
imagefilledrectangle($im, 0, 0, $width - 1, $height - 1, $backColor);
imagerectangle($im, 0, 0, $width - 1, $height - 1, $borderColor);
$stringColor = imagecolorallocate($im, mt_rand(0, 200), mt_rand(0, 120), mt_rand(0, 120));
// 干扰
for ($i = 0; $i < 10; $i++) {
imagearc($im, mt_rand(-10, $width), mt_rand(-10, $height), mt_rand(30, 300), mt_rand(20, 200), 55, 44, $stringColor);
}
for ($i = 0; $i < 25; $i++) {
imagesetpixel($im, mt_rand(0, $width), mt_rand(0, $height), $stringColor);
}
$whites = ImageColorAllocate($im, mt_rand(0, 255),mt_rand(0, 255),mt_rand(0, 255));
$y = $height - ($height - $size) / 2;
if(file_exists($fontpath)){
for ($i = 0; $i < $length; $i++) {
$x = $size * $i + $left+10;
imagettftext($im, $size, mt_rand(10, 10), $x, $y, $whites, $fontpath, $randval{$i});
}
}else{
for ($i = 0; $i < $length; $i++) {
imagestring($im, 5, $i * 10 + 5, mt_rand(1, 8), $randval{$i}, $red);
}
}
Image::output($im, $type);
}
说明:
字体必须存在才能产生效果
字体随即颜色
字体可以替换 Public/Font/font.ttf
附送字体 不支持字母小写,不支持中文
感谢 @前世有约丶 的提示
font.7z
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