php图片增加中文与图片水印代码

$ico_pic 是你要给图片加水印的水印图片，其它的参数都有详细的说明，如果你下大找这类代码可以下载保存成php文件再利用后面说的调用方法来调用本生成水印图片类代码。

 class smallpic{

  private $src_pic;//原图
  private $ico_pic = "003.png";//水印图
  private $ico_text = "水印";//水印文字
  private $small_width;//缩略图宽度
  private $small_height;//缩略图高度
  private $is_ico_pic = true;//是否加图片水印
  private $is_text = true;//是否加文字水印
  private $src_x = 20;//水印在原图的x坐标
  private $src_y = 20;//水印在原图的y坐标
  private $ut = "utf-8";//文字编码
  private $font_color = "#990000";//文字水印颜色
  private $samll_pic_name = "smallpic";//小图的名称
  private $big_pic_name = "bigpic";//大图的名称

  function __construct($src_pic,$small_width,$small_height){
   $this->checkfile($src_pic);
   $this->checkfile($this->ico_pic);
  $this->src_pic = $src_pic;
  $this->small_width = $small_width;
  $this->small_height = $small_height;
  }

 private function __get($property_name){
  return $this->$property_name;
 }

 private function __set($property_name,$value){
  return $this->$property_name = $value;
 }

 /**
  * 取得图片的一些基本信息，类型为array
  */
  function getimageinfo($image){
  return @getimagesize($image);
  }

 /**
  * 把图片加载到php中
  * $image 传进来的图片
  */
  function getimage($image){
  $image_info = $this->getimageinfo($image);
  switch($image_info[2]){
   case 1:
    $img = @imagecreatefromgif($image);
    break;
   case 2:
    $img = @imagecreatefromjpeg($image);
    break;
   case 3:
    $img = @imagecreatefrompng($image);
    break;
  }
  return $img;
  }

 function createimageforsuffix($big_pic,$new_pic){
  $image_info = $this->getimageinfo($this->src_pic);
  switch($image_info[2]){
   case 1:
    //输出大图
    @imagegif($big_pic,$this->big_pic_name.".gif");
    //输出小图
    @imagegif($new_pic,$this->samll_pic_name.".gif");
    break;
   case 2:
    //输出大图
    @imagejpeg($big_pic,$this->big_pic_name.".jpg");
    //输出小图
    @imagejpeg($new_pic,$this->samll_pic_name.".jpg");
    break;
   case 3:
    //输出大图
    @imagepng($big_pic,$this->big_pic_name.".png");
    //输出小图
    @imagepng($new_pic,$this->samll_pic_name.".png");
    break;
  }
 }

 function checkfile($file){
  if(!file_exists($file)){
   die("图片:".$file."不存在！");
  }
 }

 function createsmallimage(){
  $big_pic = $this->getimage($this->src_pic);
  $big_pic_info = $this->getimageinfo($this->src_pic);
  $new_pic = $this->getimage($this->ico_pic);
  $new_pic_info = $this->getimageinfo($this->ico_pic);
  $rgb = $this->convcolor();

  //判断是按宽比例缩放还是按高比例缩放
  if($big_pic_info[0] > $big_pic_info[1]){
   $ratio = $this->small_width/(int)$big_pic_info[0];
   $small_pic_width = $this->small_width;
   $small_pic_height = (int)($big_pic_info[1]*$ratio);
  }else{
   $ratio = $this->small_height/(int)$big_pic_info[1];
   $small_pic_height = $this->small_height;
   $small_pic_width = (int)($big_pic_info[0]*$ratio);
  }

  //echo $small_pic_width = (int)($big_pic_info[0]*$ratio);
  //echo $small_pic_height = (int)($big_pic_info[1]*$ratio);

  //是否打图片水印
  if ($this->is_ico_pic){
   //打图片水印
   @imagecopy($big_pic,$new_pic,$this->src_x,$this->src_y,0,0,$new_pic_info[0],$new_pic_info[1]);
  }
  //是否打文字水印
  if ($this->is_text){
   //设置文字颜色
   $text_color = @imagecolorallocate($big_pic,$rgb[0],$rgb[1],$rgb[2]);
   //转换文字编码
   $text = @iconv($this->ut,"utf-8",$this->ico_text);
   //打文字水印
   @imagettftext($big_pic,12,0,$this->src_x,$this->src_y,$text_color,"simkai_0.ttf",$text);
  }
  //新建一个新图片的画板
  $new_pic = @imagecreatetruecolor($small_pic_width,$small_pic_height);
  //生成缩略图
  @imagecopyresized($new_pic,$big_pic,0,0,0,0,$small_pic_width,$small_pic_height,$big_pic_info[0],$big_pic_info[1]);
  //输出图
  $this->createimageforsuffix($big_pic,$new_pic);
 }

 /**
  * 类内部的功能函数把#000000转换成255,255,255
  */
 private function convcolor(){
  $rgb = array();
  $color = preg_replace("/#/","",$this->font_color);
  $c = hexdec($color);
  $r = ($c >> 16) & 0xff;
  $g = ($c >> 8) & 0xff;
  $b = $c & 0xff;
  $rgb[0] = $r;
  $rgb[1] = $g;
  $rgb[2] = $b;
  return $rgb;
 }
 }

//调用方法
 

$pic = new smallpic("002.jpg",600,300);
 $pic->is_text = true;
 $pic->is_ico_pic = true;
 $pic->ico_pic = "./images/004.png";
 $pic->ico_text = "新年快乐!";
 //$pic->src_x = 80;
 $pic->src_y = 80;
 $pic->ut = "utf-8";
 $pic->font_color = "#0521f8";
 $pic->samll_pic_name = "hslsamll";
 $pic->big_pic_name = "hslbig";
 $pic->createsmallimage();

?>

此程序实现php画柱状图它的设计思想是：首先以用imagecreate（）来生成一个空白图形；其程序实现如下： //需要两种不同的颜色，正数一个 负数一个 ，一个数据数组,$path为保存图片的地址

<?php教程
//此程序实现php画柱状图,开发股票网站的朋友经常会碰到在生成k线图片，现在我们来看看一款利用php根据数组数据生成k线图片。
//它的设计思想是：首先以用imagecreate（）来生成一个空白图形；其程序实现如下：
//需要两种不同的颜色，正数一个 负数一个 ，一个数据数组,$path为保存图片的地址

$data = array ("-1174.58","-1865.41","1961.24","-1174.58","-1865.41","1961.24","-1174.58","-1865.41","1961.24","-1174.58","-1865.41","1961.24","-1174.58","-1865.41","1961.24","-1174.58","-1865.41","1961.24","-1174.58","-1865.41","1961.24","-1174.58","-1865.41","1961.24","-1174.58","-1865.41","1961.24","-1174.58","-1865.41","1961.24");
$colors = array (array (255,0,0 ),array (0,255,0 ) );
$path = "gg15_600050.gif";
$title = "中国联通(600050)30日资金进出";
$date = array ("2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00","2010-05-20 00:00:00");
$hai = array(7203,6037,1931,9605,7405,8855,228,7771,8671,8791,1290,426,3265,4298,4809,3350,8204,8682,5523,7569,5853,593,3124,9062,3329,3236,2252,8756,2796,5164,2599,2630,1470,9779,8805,1512,1517,5635,760,1380,152,6035,2905,3163,9443,9432,5031,2838,6802,9330,1878,1333,4297,4180,3037,4527,9043,7287,3248,3448,3405,7204,2203,3974,4399,7333,4541,7033,4292,6128,9955,8603,297,6992,3282,9612,4483,8379,4016,6038,4163,3789,6896,8710,1502,1579,1712,3705,3619,5150,3007,1853,2776,3056,569,9031,6092,8600,8941,6366,5829,433,8011,9637,9106,1761,2422,9873,8186,1136,1763,3050,285,1962,775,9900,7371,2691,9051,6596,6858,6726,1527,3970,910,2621,7598,7899,6546,3678,2202,9411,6129,8352,4830,4484,6776,243,323,3946,751,7508,8173,3776,5071,3847,3318,4901,2102,7516,5251,3299,8859,2114,8711,9800,7707,5898,3489,580,5763,2470,4126,6269,5191,182,412,3043,3208,2438,6889,1732,1979,7692,3445,8214,8620,9446,4624,3615,5496,6152,213,3715,9623,1215,4757,9443,3366,2988,8043,6874,3742,4974,4812,6839,3016,5625,4656,5315,8303,8346,2315,3230,1969,1688,7381,6463,1030,8856,4691,6042,7652,8502,3839,7844,9149,4029,9465,2897,7688,3791,1458,6981,484,1290,4261,1222,9503,4881,7663,1399,2260,8066,6405,8442,722,9297,177,8426,2103,2078,3521,2280,8570,4663,6227,5784,7438,654,3036,9965,872,8306,3537,899,5888,1319,2472,9218,4853,7849,9433,1196,4880,1597,9258,7465,8138,817,1637,4201,1939,8914,1114,2232,8251,4538,7378,7438,4489,993,5269,944,2718,6633,4378,8431,155,5061,9347,1125,8865,4629,9965,4706,6263,8742,971,301);
draw(600,300,$data,$colors,$path,$title,$date);
function draw($w,$h,$data,$colors,$path,$title,$date)
{
 //创建新空白图形
 //箭头50像素，内容400*300
 $width = $w;
 $height = $h;
 //取得左下角的坐标点，左边50像素和最下边50像素用于写标尺
 $l_b_x = 50;
 $l_b_y = $height/2;
 
 $chartfont = 2; //图表字体
 $font = 'c:/windows/fonts/simsun.ttc';//支持汉字的字体
 $chartfontheight = imagefontheight($chartfont);//图表字体的大小
 
 //取得最大的数据
 $max = abs(max($data));
 $max = $max>abs(min($data))?$max:abs(min($data));
 $image = imagecreate($width,$height);
 
 //填充背景为白色
 $color_white = imagecolorallocate($image, 0xff, 0xff, 0xff);//白色
 $color_diwen = imagecolorallocate($image,0xd8,0xd8,0xd8);//暗灰色
 imagefill($image,0,0,$color_white);
 //写入logo
 imagettftext($image,20,0,$l_b_x+20,45,$color_diwen,$font,'华南财经网');
 //画坐标
 //坐标颜色为黑色,先画坐标，再画箭头
 $black_color = imagecolorallocate($image,0x00,0x00,0x00);
 imageline($image,$l_b_x,$l_b_y,$l_b_x,10,$black_color);
 imageline($image,$l_b_x,$l_b_y,$width-10,$l_b_y,$black_color);
 //箭头
 imageline($image,$l_b_x,10,$l_b_x-3,14,$black_color);
 imageline($image,$l_b_x,10,$l_b_x+3,14,$black_color);
 imageline($image,$width-10,$l_b_y,$width-13,$l_b_y-3,$black_color);
 imageline($image,$width-10,$l_b_y,$width-13,$l_b_y+3,$black_color);
 //画底纹,灰色;画20条底纹；虚线
 $pit = floor(($l_b_y-50)/10);//每一段的高度
 $pit_x = floor(($width-$l_b_x-30)/count($data));//每一段的宽度
 //计算单位
 $x_max = $max;
 $flag_danwei = 0;
 while($x_max> 1000 )
 {
  $x_max /= 100;
  $flag_danwei++;
 }
 switch($flag_danwei)
 {
 // case 0:$danwei = '（元）';break;
  case 0:$danwei = '（万）';break;
  case 1:$danwei = '（百万）';break;
  case 2:$danwei = '（亿）';break;
  case 3:$danwei = '（百亿）';break;
 }
 for($i=1;$i<11;$i++)
 {
  imageline($image,$l_b_x+1,$l_b_y-$i*$pit,$width-15,$l_b_y-$i*$pit,$color_diwen);
  //从坐标的值
  $v_v = number_format(($max/(10*pow(100,$flag_danwei))*$i),2);
  $v_v = substr($v_v,0,5);
  imagestring($image,
     $chartfont,
     $l_b_x-40,
     $l_b_y-$i*$pit-10,
     $v_v,
     $black_color);
 }
 //原点坐标
 imagestring($image,
    $chartfont,
    $l_b_x-20,
    $l_b_y-10,
    0,
    $black_color);
 //写入汉字,单位 和标题
 imagettftext($image, 10,0,$l_b_x-45,20,$black_color,$font,$danwei);
 //imagettftext($image, 11,0,$width/2-70,$l_b_y+20,$black_color, $font,$title);

 //画柱体，长方形，并着色
 $color_big = imagecolorallocate($image,$colors[0][0],$colors[0][1],$colors[0][2]);
 $color_small = imagecolorallocate($image,$colors[1][0],$colors[1][1],$colors[1][2]);
 for($j=0;$j<count($data);$j++)
 {
  $d_h = floor(abs($data[$j]/$max*10*$pit));//柱体高度
  $current_date = substr($date[$j],5,5);
 // $current_date .= substr($date[$j],8,2);
  imagerectangle($image,
     $l_b_x+$j*$pit_x+1,
     $l_b_y,
     $l_b_x+($j+1)*$pit_x-2,
     $l_b_y-$d_h,
     $black_color);
  //为矩形着色
  $current_color = $data[$j]>0?$color_big:$color_small;
  imagefilltoborder($image,
    $l_b_x+$j*$pit_x+1 + floor($pit_x/2),
    $l_b_y-floor($d_h/2),
    $black_color,
    $current_color);
  //写入日期
  /*imagestring($image,
    $chartfont,
    $l_b_x+$j*$pit_x,
    $l_b_y+2,
    $current_date,
    $black_color);*/
  imagettftext($image,8,90,$l_b_x+$j*$pit_x+10,$l_b_y-$d_h,$black_color,$font,$current_date);
 } 
 if($path !="")
  imagegif($image,$path);
 else imagegif($image);
 imagedestroy($image);
 }//画图函数结束
//输出生成的图片
/*

header("content-type: image/gif");
$my_colors[] = array(0xff,0x00,0x00);
$my_colors[] = array(0x00,0xff,0x00);
draw(600,400,array(1066565650,-40345340,50343433440,1834340,50343230,-8023454230,600,7232323300,-836),$my_colors,0,'教科书大阿斯顿即可');*/
//draw(600,400,array(1066,-4040,5040,1840,5030,-8230,600,7232,-836),$my_colors,0,'教科书大阿斯顿即可');
?>

本站原创教程，转载注明来源于http://www.111cn.net/phper/php.html 否则必究

一款php生成验证码实现代码，把自定义了session的目录，这样就不是php.ini里默认的session文件保存路径了，如下面session_save_path,可重新定义目录。

session_save_path,可重新定义目录。
*/
$sesssavepath = dirname(__file__)."/../data/sessions/";
if(is_writeable($sesssavepath) && is_readable($sesssavepath)){ session_save_path($sesssavepath); }
session_start();
$vstr = '';
for($i=0; $i<4; $i++) $vstr .= chr(mt_rand(65,90));
if(function_exists("imagecreate")){
 $ntime = time();
 if(empty($_session['verifycode_last']) || empty($_session['verifycode']) || ($ntime - $_session['verifycode_last'] > 5)){
  $_session['verifycode'] = strtolower($vstr);
  $_session['verifycode_last'] = $ntime;
 }
 $vstr = $_session['verifycode'];
 $vstrlen = strlen($vstr);
 $img = imagecreate(50,20);
 imagecolorallocate($img, 255,255,255);
 $line1 = imagecolorallocate($img,240,220,180);
 $line2 = imagecolorallocate($img,250,250,170);
 for($j=3;$j<=16;$j=$j+3){
  imageline($img,2,$j,48,$j,$line1);
 }
 for($j=2;$j<52;$j=$j+(mt_rand(3,6))){
  imageline($img,$j,2,$j-6,18,$line2);
 }
 $bordercolor = imagecolorallocate($img, 0x99,0x99,0x99);
 imagerectangle($img, 0, 0, 49, 19, $bordercolor);
 $fontcolor = imagecolorallocate($img, 48,61,50);
 for($i=0;$i<$vstrlen;$i++){
  $bc = mt_rand(0,1);
  $vstr[$i] = strtoupper($vstr[$i]);
  imagestring($img, 5, $i*10+6, mt_rand(2,4), $vstr[$i], $fontcolor);
 }

 header("pragma:no-cachern");
 header("cache-control:no-cachern");
 header("expires:0rn");

 if(function_exists("imagejpeg")){
  header("content-type:image/jpegrn");
  imagejpeg($img);
 }else{
  header("content-type:image/pngrn");
  imagepng($img);
 }
 imagedestroy($img);
 exit();
}

1.用imagecreatetruecolor和imagecopyresampled函数分别取代imagecreate和imagecopyresized
2.给imagejpeg的第三个参数带上100(例:imagejpeg($ni,$tofile,100))

imagecreatetruecolor -- 新建一个真彩色图像
说明
resource imagecreatetruecolor ( int x_size, int y_size )
imagecreatetruecolor() 返回一个图像标识符，代表了一幅大小为 x_size 和 y_size 的黑色图像

*/

header ("content-type: image/png");
$im = @imagecreatetruecolor (50, 100)
     or die ("cannot initialize new gd image stream");
$text_color = imagecolorallocate ($im, 233, 14, 91);
imagestring ($im, 1, 5, 5,  "a simple text string", $text_color);
imagepng ($im);
imagedestroy ($im);

/*

如果使用普通的imagecreate()函数将造成图片质量失真的情况，从网上搜了一下解决办法，方法是用imagecreateruecolor()函数替换imagecreate()函数。
*/

function createpreview($img,$name,$path,$maxwidth,$maxheight,$quality){//图片,保存名称,保存路径,最大宽,最大高,质量
 $widthratio=0;
 $heightratio=0;
 $width=imagesx($img);
 $height=imagesy($img);
 //开始计算缩小比例
 if($width>$maxwidth||$height>$maxheight){
  if($width>$maxwidth){
   $widthratio=$maxwidth/$width;
  }
  if($height>$maxheight){
   $heightratio=$maxheight/$height;
  }
  if($widthratio>0&&$heightratio>0){
   if($widthratio<$heightratio){
    $ratio=$widthratio;
   }else{
    $ratio=$heightratio;
   }
  }elseif($widthratio>0){
   $ratio=$widthratio;
  }elseif($heightratio>0){
   $ratio=$heightratio;
  }
  //根据得出的比例,重新计算缩略图的宽和高
  $newwidth=$ratio*$width;
  $newheight=$ratio*$height;
  $newimg=imagecreatetruecolor($newwidth,$newheight); // 创建目标图
  imagecopyresized($newimg,$img,0,0,0,0,$newwidth,$newheight,$width,$height);
  imagejpeg($newimg,$path."s_".$name,$quality);
  imagedestroy($newimg);
 }else{
  imagejpeg($img,$path."s_".$name,$quality);
 }
}
/*

imagecopyresamples() ,其像素插值算法得到的图像边缘比较平滑.质量较好(但该函数的速度比 imagecopyresized() 慢).

在php中给图片增加水印有imagecreatefromjpeg imagecreatefrompng imagecopymerge imagejpeg就成了，只要你设置原图与水印图片就成了，下面看实例。
*/

代码如下	复制代码
header("content-type: image/jpeg"); $filename='temp/www.111cn.net/111cn.net.jpg'; $im=imagecreatefromjpeg($filename); $s=imagecreatefrompng('mb.111cn.net/pic/water_template.png'); imagecopymerge($im,$s,0,200,0,0,365,27,20); imagejpeg($im);