功能强大的PHP图片处理类(水印、透明度、旋转)

2024-05-04 23:39:43

字体：大中小

来源：转载

供稿：网友

这篇文章主要汇总介绍了php图片处理类(水印、透明度、缩放、锐化)，非常的简单实用，有需要的小伙伴可以参考下

非常强大的php图片处理类，可以自定义图片水印、透明度、图片缩放、图片锐化、图片旋转、图片翻转、图片剪切、图片反色。

* 图片处理函数功能：缩放、剪切、相框、水印、锐化、旋转、翻转、透明度、反色

* 处理并保存历史记录的思路：当有图片有改动时自动生成一张新图片，命名方式可以考虑在原图片的基础上加上步骤，例如：图片名称+__第几步

具体代码如下：

<?php

class picture{

var $PICTURE_URL; //要处理的图片

var $DEST_URL = "temp__01.jpg"; //生成目标图片位置

var $PICTURE_CREATE; //要创建的图片

var $TURE_COLOR; //新建一个真彩图象

var $PICTURE_WIDTH; //原图片宽度

var $PICTURE_HEIGHT; //原图片高度

/**

* 水印的类型，默认的为水印文字

*/

var $MARK_TYPE = 1;

var $WORD; //经过UTF-8后的文字

var $WORD_X; //文字横坐标

var $WORD_Y; //文字纵坐标

var $FONT_TYPE; //字体类型

var $FONT_SIZE = "12"; //字体大小

var $FONT_WORD; //文字

var $ANGLE = 0; //文字的角度，默认为0

var $FONT_COLOR = "#000000"; //文字颜色

var $FONT_PATH = "font/simkai.ttf"; //字体库，默认为宋体

var $FORCE_URL; //水印图片

var $FORCE_X = 0; //水印横坐标

var $FORCE_Y = 0; //水印纵坐标

var $FORCE_START_X = 0; //切起水印的图片横坐标

var $FORCE_START_Y = 0; //切起水印的图片纵坐标

var $PICTURE_TYPE; //图片类型

var $PICTURE_MIME; //输出的头部

/**

* 缩放比例为1的话就按缩放高度和宽度缩放

*/

var $ZOOM = 1; //缩放类型

var $ZOOM_MULTIPLE; //缩放比例

var $ZOOM_WIDTH; //缩放宽度

var $ZOOM_HEIGHT; //缩放高度

/**

* 裁切，按比例和固定长度、宽度

*/

var $CUT_TYPE = 1; //裁切类型

var $CUT_X = 0; //裁切的横坐标

var $CUT_Y = 0; //裁切的纵坐标

var $CUT_WIDTH = 100; //裁切的宽度

var $CUT_HEIGHT = 100; //裁切的高度

/**

* 锐化

*/

var $SHARP = "7.0"; //锐化程度

/**

* 透明度处理

*/

var $ALPHA = '100'; //透明度在0-127之间

var $ALPHA_X = "90";

var $ALPHA_Y = "50";

/**

* 任意角度旋转

*/

var $CIRCUMROTATE = "90.0"; //注意，必须为浮点数

/**

* 出错信息

*/

var $ERROR = array(

'unalviable' => '没有找到相关图片!'

);

/**

* 构造函数：函数初始化

*/

function __construct($PICTURE_URL){

$this -> get_info($PICTURE_URL);

}

function get_info($PICTURE_URL){

/**

* 处理原图片的信息,先检测图片是否存在,不存在则给出相应的信息

*/

@$SIZE = getimagesize($PICTURE_URL);

if(!$SIZE){

exit($this -> ERROR['unalviable']);

}

// 得到原图片的信息类型、宽度、高度

$this -> PICTURE_MIME = $SIZE['mime'];

$this -> PICTURE_WIDTH = $SIZE[0];

$this -> PICTURE_HEIGHT = $SIZE[1];

// 创建图片

switch($SIZE[2]){

case 1:

$this -> PICTURE_CREATE = imagecreatefromgif($PICTURE_URL);

$this -> PICTURE_TYPE = "imagejpeg";

$this -> PICTURE_EXT = "jpg";

break;

case 2:

$this -> PICTURE_CREATE = imagecreatefromjpeg($PICTURE_URL);

$this -> PICTURE_TYPE = "imagegif";

$this -> PICTURE_EXT = "gif";

break;

case 3:

$this -> PICTURE_CREATE = imagecreatefrompng($PICTURE_URL);

$this -> PICTURE_TYPE = "imagepng";

$this -> PICTURE_EXT = "png";

break;

}

/**

* 文字颜色转换16进制转换成10进制

*/

preg_match_all("/([0-f]){2,2}/i", $this -> FONT_COLOR, $MATCHES);

if(count($MATCHES) == 3){

$this -> RED = hexdec($MATCHES[0][0]);

$this -> GREEN = hexdec($MATCHES[0][1]);

$this -> BLUE = hexdec($MATCHES[0][2]);

}

}

# end of __construct

/**

* 将16进制的颜色转换成10进制的（R，G，B）

*/

function hex2dec(){

preg_match_all("/([0-f]){2,2}/i", $this -> FONT_COLOR, $MATCHES);

if(count($MATCHES) == 3){

$this -> RED = hexdec($MATCHES[0][0]);

$this -> GREEN = hexdec($MATCHES[0][1]);

$this -> BLUE = hexdec($MATCHES[0][2]);

}

}

// 缩放类型

function zoom_type($ZOOM_TYPE){

$this -> ZOOM = $ZOOM_TYPE;

}

// 对图片进行缩放,如果不指定高度和宽度就进行缩放

function zoom(){

// 缩放的大小

if($this -> ZOOM == 0){

$this -> ZOOM_WIDTH = $this -> PICTURE_WIDTH * $this -> ZOOM_MULTIPLE;

$this -> ZOOM_HEIGHT = $this -> PICTURE_HEIGHT * $this -> ZOOM_MULTIPLE;

}

// 新建一个真彩图象

$this -> TRUE_COLOR = imagecreatetruecolor($this -> ZOOM_WIDTH, $this -> ZOOM_HEIGHT);

$WHITE = imagecolorallocate($this -> TRUE_COLOR, 255, 255, 255);

imagefilledrectangle($this -> TRUE_COLOR, 0, 0, $this -> ZOOM_WIDTH, $this -> ZOOM_HEIGHT, $WHITE);

imagecopyresized($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> ZOOM_WIDTH, $this -> ZOOM_HEIGHT, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

}

# end of zoom

// 裁切图片,按坐标或自动

function cut(){

$this -> TRUE_COLOR = imagecreatetruecolor($this -> CUT_WIDTH, $this -> CUT_WIDTH);

imagecopy($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, 0, $this -> CUT_X, $this -> CUT_Y, $this -> CUT_WIDTH, $this -> CUT_HEIGHT);

}

# end of cut

/**

* 在图片上放文字或图片

* 水印文字

*/

function _mark_text(){

$this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

$this -> WORD = mb_convert_encoding($this -> FONT_WORD, 'utf-8', 'gb2312');

/**

* 取得使用 TrueType 字体的文本的范围

*/

$TEMP = imagettfbbox($this -> FONT_SIZE, 0, $this -> FONT_PATH, $this -> WORD);

$WORD_LENGTH = strlen($this -> WORD);

$WORD_WIDTH = $TEMP[2] - $TEMP[6];

$WORD_HEIGHT = $TEMP[3] - $TEMP[7];

/**

* 文字水印的默认位置为右下角

*/

if($this -> WORD_X == ""){

$this -> WORD_X = $this -> PICTURE_WIDTH - $WORD_WIDTH;

}

if($this -> WORD_Y == ""){

$this -> WORD_Y = $this -> PICTURE_HEIGHT - $WORD_HEIGHT;

}

imagesettile($this -> TRUE_COLOR, $this -> PICTURE_CREATE);

imagefilledrectangle($this -> TRUE_COLOR, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT, IMG_COLOR_TILED);

$TEXT2 = imagecolorallocate($this -> TRUE_COLOR, $this -> RED, $this -> GREEN, $this -> Blue);

imagettftext($this -> TRUE_COLOR, $this -> FONT_SIZE, $this -> ANGLE, $this -> WORD_X, $this -> WORD_Y, $TEXT2, $this -> FONT_PATH, $this -> WORD);

}

/**

* 水印图片

*/

function _mark_picture(){

/**

* 获取水印图片的信息

*/

@$SIZE = getimagesize($this -> FORCE_URL);

if(!$SIZE){

exit($this -> ERROR['unalviable']);

}

$FORCE_PICTURE_WIDTH = $SIZE[0];

$FORCE_PICTURE_HEIGHT = $SIZE[1];

// 创建水印图片

switch($SIZE[2]){

case 1:

$FORCE_PICTURE_CREATE = imagecreatefromgif($this -> FORCE_URL);

$FORCE_PICTURE_TYPE = "gif";

break;

case 2:

$FORCE_PICTURE_CREATE = imagecreatefromjpeg($this -> FORCE_URL);

$FORCE_PICTURE_TYPE = "jpg";

break;

case 3:

$FORCE_PICTURE_CREATE = imagecreatefrompng($this -> FORCE_URL);

$FORCE_PICTURE_TYPE = "png";

break;

}

/**

* 判断水印图片的大小，并生成目标图片的大小，如果水印比图片大，则生成图片大小为水印图片的大小。否则生成的图片大小为原图片大小。

*/

$this -> NEW_PICTURE = $this -> PICTURE_CREATE;

if($FORCE_PICTURE_WIDTH > $this -> PICTURE_WIDTH){

$CREATE_WIDTH = $FORCE_PICTURE_WIDTH - $this -> FORCE_START_X;

}else{

$CREATE_WIDTH = $this -> PICTURE_WIDTH;

}

if($FORCE_PICTURE_HEIGHT > $this -> PICTURE_HEIGHT){

$CREATE_HEIGHT = $FORCE_PICTURE_HEIGHT - $this -> FORCE_START_Y;

}else{

$CREATE_HEIGHT = $this -> PICTURE_HEIGHT;

}

/**

* 创建一个画布

*/

$NEW_PICTURE_CREATE = imagecreatetruecolor($CREATE_WIDTH, $CREATE_HEIGHT);

$WHITE = imagecolorallocate($NEW_PICTURE_CREATE, 255, 255, 255);

/**

* 将背景图拷贝到画布中

*/

imagecopy($NEW_PICTURE_CREATE, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

/**

* 将目标图片拷贝到背景图片上

*/

imagecopy($NEW_PICTURE_CREATE, $FORCE_PICTURE_CREATE, $this -> FORCE_X, $this -> FORCE_Y, $this -> FORCE_START_X, $this -> FORCE_START_Y, $FORCE_PICTURE_WIDTH, $FORCE_PICTURE_HEIGHT);

$this -> TRUE_COLOR = $NEW_PICTURE_CREATE;

}

# end of mark

function alpha_(){

$this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

$rgb = "#CDCDCD";

$tran_color = "#000000";

for($j = 0;$j <= $this -> PICTURE_HEIGHT-1;$j++){

for ($i = 0;$i <= $this -> PICTURE_WIDTH-1;$i++)

{

$rgb = imagecolorat($this -> PICTURE_CREATE, $i, $j);

$r = ($rgb >> 16) & 0xFF;

$g = ($rgb >> 8) & 0xFF;

$b = $rgb & 0xFF;

$now_color = imagecolorallocate($this -> PICTURE_CREATE, $r, $g, $b);

if ($now_color == $tran_color)

{

continue;

}

else

{

$color = imagecolorallocatealpha($this -> PICTURE_CREATE, $r, $g, $b, $ALPHA);

imagesetpixel($this -> PICTURE_CREATE, $ALPHA_X + $i, $ALPHA_Y + $j, $color);

}

$this -> TRUE_COLOR = $this -> PICTURE_CREATE;

}

}

}

/**

* 图片旋转:

* 沿y轴旋转

*/

function turn_y(){

$this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

for ($x = 0; $x < $this -> PICTURE_WIDTH; $x++)

{

imagecopy($this -> TRUE_COLOR, $this -> PICTURE_CREATE, $this -> PICTURE_WIDTH - $x - 1, 0, $x, 0, 1, $this -> PICTURE_HEIGHT);

}

}

/**

* 沿X轴旋转

*/

function turn_x(){

$this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

for ($y = 0; $y < $this -> PICTURE_HEIGHT; $y++){

imagecopy($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, $this -> PICTURE_HEIGHT - $y - 1, 0, $y, $this -> PICTURE_WIDTH, 1);

}

}

/**

* 任意角度旋转

*/

function turn(){

$this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

imageCopyResized($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

$WHITE = imagecolorallocate($this -> TRUE_COLOR, 255, 255, 255);

$this -> TRUE_COLOR = imagerotate ($this -> TRUE_COLOR, $this -> CIRCUMROTATE, $WHITE);

}

/**

* 图片锐化

*/

function sharp(){

$this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

$cnt = 0;

for ($x = 0; $x < $this -> PICTURE_WIDTH; $x++){

for ($y = 0; $y < $this -> PICTURE_HEIGHT; $y++){

$src_clr1 = imagecolorsforindex($this -> TRUE_COLOR, imagecolorat($this -> PICTURE_CREATE, $x-1, $y-1));

$src_clr2 = imagecolorsforindex($this -> TRUE_COLOR, imagecolorat($this -> PICTURE_CREATE, $x, $y));

$r = intval($src_clr2["red"] + $this -> SHARP * ($src_clr2["red"] - $src_clr1["red"]));

$g = intval($src_clr2["green"] + $this -> SHARP * ($src_clr2["green"] - $src_clr1["green"]));

$b = intval($src_clr2["blue"] + $this -> SHARP * ($src_clr2["blue"] - $src_clr1["blue"]));

$r = min(255, max($r, 0));

$g = min(255, max($g, 0));

$b = min(255, max($b, 0));

if (($DST_CLR = imagecolorexact($this -> PICTURE_CREATE, $r, $g, $b)) == -1)

$DST_CLR = imagecolorallocate($this -> PICTURE_CREATE, $r, $g, $b);

$cnt++;

if ($DST_CLR == -1) die("color allocate faile at $x, $y ($cnt).");

imagesetpixel($this -> TRUE_COLOR, $x, $y, $DST_CLR);

}

}

}

/**

* 将图片反色处理??

*/

function return_color(){

/**

* 创建一个画布

*/

$NEW_PICTURE_CREATE = imagecreate($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

$WHITE = imagecolorallocate($NEW_PICTURE_CREATE, 255, 255, 255);

/**

* 将背景图拷贝到画布中

*/

imagecopy($NEW_PICTURE_CREATE, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);

$this -> TRUE_COLOR = $NEW_PICTURE_CREATE;

}

/**

* 生成目标图片并显示

*/

function show(){

// 判断浏览器,若是IE就不发送头

if(isset($_SERVER['HTTP_USER_AGENT']))

{

$ua = strtoupper($_SERVER['HTTP_USER_AGENT']);

if(!preg_match('/^.*MSIE.*/)$/i', $ua))

{

header("Content-type:$this->PICTURE_MIME");

}

}

$OUT = $this -> PICTURE_TYPE;

$OUT($this -> TRUE_COLOR);

}

/**

* 生成目标图片并保存

*/

function save_picture(){

// 以 JPEG 格式将图像输出到浏览器或文件

$OUT = $this -> PICTURE_TYPE;

if(function_exists($OUT)){

// 判断浏览器,若是IE就不发送头

if(isset($_SERVER['HTTP_USER_AGENT']))

{

$ua = strtoupper($_SERVER['HTTP_USER_AGENT']);

if(!preg_match('/^.*MSIE.*/)$/i', $ua))

{

header("Content-type:$this->PICTURE_MIME");

}

}

if(!$this -> TRUE_COLOR){

exit($this -> ERROR['unavilable']);

}else{

$OUT($this -> TRUE_COLOR, $this -> DEST_URL);

$OUT($this -> TRUE_COLOR);

}

}

}

/**

* 析构函数：释放图片

*/

function __destruct(){

/**

* 释放图片

*/

imagedestroy($this -> TRUE_COLOR);

imagedestroy($this -> PICTURE_CREATE);

}

# end of class

}

?>