/**
* @throws Exception
* 生成验证码 ， 存放到token相对应的session里面
*/
public function createCaptcha()
{
$token = $_COOKIE["token"];
if (empty($token)) {
throw new Exception("无法生产验证码，请稍后在试");
}
$string = "abcdefghijklmnopqrstuvwxyz0123456789";
$str = "";
for ($i = 0; $i < 4; $i++) {
$pos = rand(0, 35);
$str .= $string[$pos];
}
$this->load->library('session');
$flag = $this->session->set_userdata($token . "_captcha", $str);
$img_handle = Imagecreate(80, 20);
//图片大小80X20
$back_color = ImageColorAllocate($img_handle, 255, 255, 255);
//背景颜色（白色）
$txt_color = ImageColorAllocate($img_handle, 0, 0, 0);
//文本颜色（黑色）
//加入干扰线
for ($i = 0; $i < 3; $i++) {
$line = ImageColorAllocate($img_handle, rand(0, 255), rand(0, 255), rand(0, 255));
Imageline($img_handle, rand(0, 15), rand(0, 15), rand(100, 150), rand(10, 50), $line);
}
//加入干扰象素
for ($i = 0; $i < 200; $i++) {
$randcolor = ImageColorallocate($img_handle, rand(0, 255), rand(0, 255), rand(0, 255));
Imagesetpixel($img_handle, rand() % 100, rand() % 50, $randcolor);
}
Imagefill($img_handle, 0, 0, $back_color);
//填充图片背景色
ImageString($img_handle, 28, 20, 0, $str, $txt_color);
//水平填充一行字符串
ob_clean();
// ob_clean()清空输出缓存区
header("Content-type: image/png");
//生成验证码图片
Imagepng($img_handle);
//显示图片
}
function make_thumb($image_path, $image_name, $height, $width)
{
// echo $image_path."-".$image_name."-".$height."-".$width;
/* read the source image */
$ext = pathinfo($image_name, PATHINFO_EXTENSION);
if ($ext == 'jpg' || $ext == 'jpeg') {
$source_image = imagecreatefromjpeg($image_name);
} elseif ($ext == 'png') {
$source_image = imagecreatefrompng($image_name);
} elseif ($ext == 'gif') {
$source_image = imagecreatefromgif($image_name);
} elseif ($ext == 'bmp') {
$source_image = imagecreatefrombmp($image_name);
}
$actual_width = imagesx($source_image);
$actual_height = imagesy($source_image);
/* create a new, "virtual" image */
$virtual_image = imagecreatetruecolor($width, $height);
Imagefill($virtual_image, 0, 0, imagecolorallocate($virtual_image, 255, 255, 255));
/* copy source image at a resized size */
imagecopyresampled($virtual_image, $source_image, 0, 0, 0, 0, $width, $height, $actual_width, $actual_height);
/* create the physical thumbnail image to its destination */
imagejpeg($virtual_image, $image_path);
}
function createthumb($orig_name, $name, $newname, $new_w, $new_h, $border = false, $transparency = true, $base64 = false)
{
if (file_exists($newname)) {
@unlink($newname);
}
if (!file_exists($name)) {
return false;
}
$arr = explode(".", $orig_name);
$ext = $arr[count($arr) - 1];
if ($ext == "jpeg" || $ext == "jpg") {
$img = @imagecreatefromjpeg($name);
} elseif ($ext == "png") {
$img = @imagecreatefrompng($name);
} elseif ($ext == "gif") {
$img = @imagecreatefromgif($name);
}
if (!$img) {
return false;
}
$old_x = imageSX($img);
$old_y = imageSY($img);
if ($old_x < $new_w && $old_y < $new_h) {
$thumb_w = $old_x;
$thumb_h = $old_y;
} elseif ($old_x > $old_y) {
$thumb_w = $new_w;
$thumb_h = floor($old_y * $new_w / $old_x);
} else {
$thumb_w = floor($old_x * $new_h / $old_y);
$thumb_h = $new_h;
}
$thumb_w = $thumb_w < 1 ? 1 : $thumb_w;
$thumb_h = $thumb_h < 1 ? 1 : $thumb_h;
$new_img = ImageCreateTrueColor($thumb_w, $thumb_h);
if ($transparency) {
if ($ext == "png") {
imagealphablending($new_img, false);
$colorTransparent = imagecolorallocatealpha($new_img, 0, 0, 0, 127);
imagefill($new_img, 0, 0, $colorTransparent);
imagesavealpha($new_img, true);
} elseif ($ext == "gif") {
$trnprt_indx = imagecolortransparent($img);
if ($trnprt_indx >= 0) {
//its transparent
$trnprt_color = imagecolorsforindex($img, $trnprt_indx);
$trnprt_indx = imagecolorallocate($new_img, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);
imagefill($new_img, 0, 0, $trnprt_indx);
imagecolortransparent($new_img, $trnprt_indx);
}
}
} else {
Imagefill($new_img, 0, 0, imagecolorallocate($new_img, 255, 255, 255));
}
imagecopyresampled($new_img, $img, 0, 0, 0, 0, $thumb_w, $thumb_h, $old_x, $old_y);
if ($border) {
$black = imagecolorallocate($new_img, 0, 0, 0);
imagerectangle($new_img, 0, 0, $thumb_w, $thumb_h, $black);
}
if ($base64) {
ob_start();
imagepng($new_img);
$img = ob_get_contents();
ob_end_clean();
$return = base64_encode($img);
} else {
if ($ext == "jpeg" || $ext == "jpg") {
imagejpeg($new_img, $newname);
$return = true;
} elseif ($ext == "png") {
imagepng($new_img, $newname);
$return = true;
} elseif ($ext == "gif") {
imagegif($new_img, $newname);
$return = true;
}
}
imagedestroy($new_img);
imagedestroy($img);
return $return;
}
private function _fvMakeImage($img)
{
$Bot_path = getcwd();
$fvManager_ImagePath = str_replace("/", "\\", $Bot_path);
$iconurl = $fvManager_ImagePath . '\\' . $img['units_iconurl'] . ".40x40.jpeg";
$name = $fvManager_ImagePath . '\\' . str_replace("/", "\\", $img['units_iconurl']);
if (!file_exists($name)) {
return;
}
if (filesize($iconurl) == 0) {
unlink($iconurl);
}
if (!file_exists($iconurl)) {
if (file_exists($iconurl)) {
return;
}
$arr = split("\\.", $name);
$ext = $arr[count($arr) - 1];
$newext = "jpeg";
if ($ext == "jpeg" || $ext == "jpg") {
$image = imagecreatefromjpeg($name);
} elseif ($ext == "png") {
$image = imagecreatefrompng($name);
} elseif ($ext == "gif") {
$image = imagecreatefromgif($name);
}
if (!$img) {
return false;
}
$old_x = imageSX($image);
$old_y = imageSY($image);
if ($old_x < 40 && $old_y < 40) {
$thumb_w = $old_x;
$thumb_h = $old_y;
} elseif ($old_x > $old_y) {
$thumb_w = 40;
$thumb_h = floor($old_y * (40 / $old_x));
} elseif ($old_x < $old_y) {
$thumb_w = floor($old_x * (40 / $old_y));
$thumb_h = 40;
} elseif ($old_x == $old_y) {
$thumb_w = 40;
$thumb_h = 40;
}
$thumb_w = $thumb_w < 1 ? 1 : $thumb_w;
$thumb_h = $thumb_h < 1 ? 1 : $thumb_h;
$new_img = ImageCreateTrueColor($thumb_w, $thumb_h);
if ($transparency) {
if ($ext == "png") {
imagealphablending($new_img, false);
$colorTransparent = imagecolorallocatealpha($new_img, 0, 0, 0, 127);
imagefill($new_img, 0, 0, $colorTransparent);
imagesavealpha($new_img, true);
} elseif ($ext == "gif") {
$trnprt_indx = imagecolortransparent($img);
if ($trnprt_indx >= 0) {
$trnprt_color = imagecolorsforindex($image, $trnprt_indx);
$trnprt_indx = imagecolorallocate($new_img, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);
imagefill($new_img, 0, 0, $trnprt_indx);
imagecolortransparent($new_img, $trnprt_indx);
}
}
} else {
Imagefill($new_img, 0, 0, imagecolorallocate($new_img, 255, 255, 255));
}
imagecopyresampled($new_img, $image, 0, 0, 0, 0, $thumb_w, $thumb_h, $old_x, $old_y);
if ($border) {
$black = imagecolorallocate($new_img, 0, 0, 0);
imagerectangle($new_img, 0, 0, $thumb_w, $thumb_h, $black);
}
imagejpeg($new_img, $iconurl, 50);
imagedestroy($new_img);
imagedestroy($image);
}
return;
}
private function vtxResizeImagem($arquivo, $fotoNome, $base64 = false)
{
$fotoLargura = $this->larguraFoto;
$fotoAltura = $this->alturaFoto;
$fotoQualidade = $this->qualidadeFoto;
$fotoNome = $fotoNome;
$fotoOpacidade = $this->fotoTransparencia != "" ? $this->fotoTransparencia : FALSE;
$gerar = $this->getImageInfo($arquivo);
$old_x = $gerar['width'];
$old_y = $gerar['height'];
$img = $gerar['create'];
/*
# check props
if($old_x < $fotoLargura && $old_y < $fotoAltura):
$thumb_w = $old_x;
$thumb_h = $old_y;
elseif ($old_x > $old_y):
$thumb_w = $fotoLargura;
$thumb_h = floor(($old_y*($fotoAltura/$old_x)));
elseif ($old_x < $old_y):
$thumb_w = floor($old_x*($fotoLargura/$old_y));
$thumb_h = $fotoAltura;
elseif ($old_x == $old_y):
$thumb_w = $fotoLargura;
$thumb_h = $fotoAltura;
endif;
$thumb_w = ($thumb_w<1) ? 1 : $thumb_w;
$thumb_h = ($thumb_h<1) ? 1 : $thumb_h;
$new_img = ImageCreateTrueColor($thumb_w, $thumb_h);
*/
###########################################################################
$ratio = $gerar['width'] / $gerar['height'];
// width/height
if ($ratio > 1) {
$thumb_w = $this->larguraFoto;
$thumb_h = $this->alturaFoto / $ratio;
} else {
$thumb_w = $this->larguraFoto * $ratio;
$thumb_h = $this->alturaFoto;
}
# $src = imagecreatefromstring(file_get_contents($fn));
# $dst = imagecreatetruecolor($width,$height);
# imagecopyresampled($dst,$src,0,0,0,0,$width,$height,$size[0],$size[1]);
$new_img = ImageCreateTrueColor($thumb_w, $thumb_h);
###########################################################################
if ($fotoOpacidade == false || $fotoOpacidade == 0 || $fotoOpacidade == "") {
if ($gerar['mime'] == "image/png" || $gerar['mime'] == "image/x-png") {
imagealphablending($new_img, false);
$colorTransparent = imagecolorallocatealpha($new_img, 0, 0, 0, 127);
imagefill($new_img, 0, 0, $colorTransparent);
imagesavealpha($new_img, true);
} elseif ($gerar['mime'] == "image/gif") {
$trnprt_indx = imagecolortransparent($img);
if ($trnprt_indx >= 0) {
//its transparent
$trnprt_color = imagecolorsforindex($img, $trnprt_indx);
$trnprt_indx = imagecolorallocate($new_img, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);
imagefill($new_img, 0, 0, $trnprt_indx);
imagecolortransparent($new_img, $trnprt_indx);
}
}
} else {
Imagefill($new_img, 0, 0, imagecolorallocate($new_img, 255, 255, 255));
}
imagecopyresampled($new_img, $img, 0, 0, 0, 0, $thumb_w, $thumb_h, $old_x, $old_y);
$fotoNome = !empty($fotoNome) ? $fotoNome : '';
if ($base64) {
ob_start();
imagepng($new_img);
$img = ob_get_contents();
ob_end_clean();
$return = base64_encode($img);
} else {
if ($gerar['mime'] == "image/jpeg" || $gerar['mime'] == "image/pjpeg") {
if (!empty($fotoNome)) {
imagejpeg($new_img, $fotoNome, $fotoQualidade);
} else {
imagejpeg($new_img, NULL, 75);
}
$return = true;
} elseif ($gerar['mime'] == "image/png" || $gerar['mime'] == "image/x-png") {
if (!empty($fotoNome)) {
imagepng($new_img, $fotoNome);
} else {
imagepng($new_img, NULL);
}
$return = true;
} elseif ($gerar['mime'] == "image/gif") {
if (!empty($fotoNome)) {
imagegif($new_img, $fotoNome, $fotoQualidade);
} else {
imagegif($new_img, NULL, 75);
}
$return = true;
}
}
imagedestroy($new_img);
imagedestroy($img);
return $return;
}
function Resize_Image($src, $width = 0, $height = 0, $dst)
{
if ($height <= 0 && $width <= 0) {
return false;
}
// Setting defaults and meta
$image = '';
$final_width = 0;
$final_height = 0;
list($width_old, $height_old, $image_type) = GetImageSize($src);
// Calculating proportionality
if ($width == 0) {
$factor = $height / $height_old;
} elseif ($height == 0) {
$factor = $width / $width_old;
} else {
$factor = Min($width / $width_old, $height / $height_old);
}
$final_width = Round($width_old * $factor);
$final_height = Round($height_old * $factor);
// Loading image to memory according to type
switch ($image_type) {
case IMAGETYPE_GIF:
$image = imagecreatefromgif($src);
break;
case IMAGETYPE_JPEG:
$image = imagecreatefromjpeg($src);
break;
case IMAGETYPE_PNG:
$image = imagecreatefrompng($src);
break;
default:
return false;
}
// This is the resizing/resampling/transparency-preserving magic
$image_resized = ImageCreateTrueColor($final_width, $final_height);
if ($image_type == IMAGETYPE_GIF || $image_type == IMAGETYPE_PNG) {
$transparency = ImageColorTransparent($image);
if ($image_type == IMAGETYPE_GIF && $transparency >= 0) {
list($r, $g, $b) = Array_Values(ImageColorsForIndex($image, $transparency));
$transparency = ImageColorAllocate($image_resized, $r, $g, $b);
Imagefill($image_resized, 0, 0, $transparency);
ImageColorTransparent($image_resized, $transparency);
} elseif ($image_type == IMAGETYPE_PNG) {
ImageAlphaBlending($image_resized, false);
$color = ImageColorAllocateAlpha($image_resized, 0, 0, 0, 127);
ImageFill($image_resized, 0, 0, $color);
ImageSaveAlpha($image_resized, true);
}
}
ImageCopyResampled($image_resized, $image, 0, 0, 0, 0, $final_width, $final_height, $width_old, $height_old);
// Writing image
switch ($image_type) {
case IMAGETYPE_GIF:
imagegif($image_resized, $dst);
break;
case IMAGETYPE_JPEG:
imagejpeg($image_resized, $dst, 85);
break;
case IMAGETYPE_PNG:
imagepng($image_resized, $dst);
break;
default:
return false;
}
}
/**
* Created by PhpStorm.
* User: zhuangshaoxiong
* Date: 2015/12/3
* Time: 20:19
*/
$string = "abcdefghijklmnopqrstuvwxyz0123456789";
$str = "";
for ($i = 0; $i < 4; $i++) {
$pos = rand(0, 35);
$str .= $string[$pos];
}
session_start();
$_SESSION['checknode'] = $str;
$img_handle = Imagecreate(100, 20);
$back_color = ImageColorAllocate($img_handle, 255, 255, 255);
$txt_color = ImageColorAllocate($img_handle, 0, 0, 0);
echo ddddd;
for ($i = 0; $i < 3; $i++) {
$line = ImageColorAllocate($img_handle, rand(0, 255), rand(0, 255), rand(0, 255));
Imageline($img_handle, rand(0, 15), rand(0, 15), rand(100, 150), rand(10, 50), $line);
}
for ($i = 0; $i < 200; $i++) {
$randcolor = ImageColorallocate($img_handle, rand(0, 255), rand(0, 255), rand(0, 255));
Imagesetpixel($img_handle, rand() % 100, rand() % 50, $randcolor);
}
Imagefill($img_handle, 0, 0, $back_color);
ImageString($img_handle, 28, 10, 0, $str, $txt_color);
ob_clean();
header("Content-Type: image/png;");
Imagepng($img_handle);
function Resample_Image()
{
if ($this->dst_height <= 0 && $this->dst_width <= 0) {
return False;
}
# Setting defaults and meta
$image = $this->image;
$final_width = 0;
$final_height = 0;
# Get File Information
if ($arr_image_size = GetImageSize($this->attachment_file)) {
list($width_old, $height_old, $image_type) = $arr_image_size;
} else {
return False;
}
if ($this->crop) {
$factor = Max($this->dst_width / $width_old, $this->dst_height / $height_old);
$final_width = $this->dst_width;
$final_height = $this->dst_height;
} else {
# Calculating proportionality
if ($this->dst_width == 0) {
$factor = $this->dst_height / $height_old;
} elseif ($this->dst_height == 0) {
$factor = $this->dst_width / $width_old;
} else {
$factor = Min($this->dst_width / $width_old, $this->dst_height / $height_old);
}
$final_width = $width_old * $factor;
$final_height = $height_old * $factor;
}
# Resample the image
if (!Function_Exists('ImageCreateTrueColor')) {
return False;
}
if (!($this->image = ImageCreateTrueColor($final_width, $final_height))) {
return False;
}
# Copy the Transparency properties
if ($image_type == IMAGETYPE_GIF || $image_type == IMAGETYPE_PNG) {
if ($image_type == IMAGETYPE_GIF && $transparency >= 0) {
$transparency = ImageColorTransparent($image);
list($r, $g, $b) = Array_Values(ImageColorsForIndex($image, $transparency));
ImageColorAllocate($this->image, $r, $g, $b);
Imagefill($this->image, 0, 0, $transparency);
ImageColorTransparent($this->image, $transparency);
} elseif ($image_type == IMAGETYPE_PNG) {
ImageAlphaBlending($this->image, False);
ImageSaveAlpha($this->image, True);
}
}
if (!Function_Exists('ImageCopyResampled')) {
return False;
}
if ($this->crop) {
# Crop the image
ImageCopyResampled($this->image, $image, 0, 0, ($width_old * $factor - $final_width) / (2 * $factor), ($height_old * $factor - $final_height) / (2 * $factor), $final_width, $final_height, $final_width / $factor, $final_height / $factor);
// int $src_w , int $src_h
} else {
# Resample aspect ratio
ImageCopyResampled($this->image, $image, 0, 0, 0, 0, $final_width, $final_height, $width_old, $height_old);
}
return True;
}
