php實現的通用圖片處理類

2024-05-04 23:33:19

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這篇文章主要介紹了php實現的通用圖片處理類,可實現針對圖片的縮放、剪切、相框、水印、銳化、旋轉、翻轉、透明度、反色等功能,具有一定參考借鑒價值,需要的朋友可以參考下

本文實例講述了php實現的通用圖片處理類。分享給大家供大家參考。具體如下：

該圖片處理函數功能：縮放、剪切、相框、水印、銳化、旋轉、翻轉、透明度、反色，處理并保存歷史記錄的思路：當有圖片有改動時自動生成一張新圖片，命名方式可以考慮在原圖片的基礎上加上步驟，例如：圖片名稱+__第幾步。在一些需要圖片高級處理功能的Web應用中，可以參考這個類。

<?php

class picture

{

var $PICTURE_URL;//要處理的圖片

var $DEST_URL="temp__01.jpg";//生成目標圖片位置

var $PICTURE_CREATE;//要創建的圖片

var $TURE_COLOR;//新建一個真彩圖象

var $PICTURE_WIDTH;//原圖片寬度

var $PICTURE_HEIGHT;//原圖片高度

/*

水印的類型，默認的為水印文字

*/

var $MARK_TYPE=1;

var $WORD;//經過UTF-8后的文字

var $WORD_X;//文字橫坐標

var $WORD_Y;//文字縱坐標

var $FONT_TYPE;//字體類型

var $FONT_SIZE="12";//字體大小

var $FONT_WORD;//文字

var $ANGLE=0;//文字的角度，默認為0

var $FONT_COLOR="#000000";//文字顏色

var $FONT_PATH="font/simkai.ttf";//字體庫，默認為宋體

var $FORCE_URL;//水印圖片

var $FORCE_X=0;//水印橫坐標

var $FORCE_Y=0;//水印縱坐標

var $FORCE_START_X=0;//切起水印的圖片橫坐標

var $FORCE_START_Y=0;//切起水印的圖片縱坐標

var $PICTURE_TYPE;//圖片類型

var $PICTURE_MIME;//輸出的頭部

/*

縮放比例為1的話就按縮放高度和寬度縮放

*/

var $ZOOM=1;//縮放類型

var $ZOOM_MULTIPLE;//縮放比例

var $ZOOM_WIDTH;//縮放寬度

var $ZOOM_HEIGHT;//縮放高度

/*

裁切，按比例和固定長度、寬度

*/

var $CUT_TYPE=1;//裁切類型

var $CUT_X=0;//裁切的橫坐標

var $CUT_Y=0;//裁切的縱坐標

var $CUT_;//裁切的寬度

var $CUT_HEIGHT=100;//裁切的高度

/*

銳化

*/

var $SHARP="7.0";//銳化程度

/*

透明度處理

*/

var $ALPHA='100';//透明度在0-127之間

var $ALPHA_X="90";

var $ALPHA_Y="50";

/*

任意角度旋轉

*/

var $CIRCUMROTATE="90.0";//注意，必須為浮點數

/*

出錯信息

*/

var $ERROR=array(

'unalviable'=>'沒有找到相關圖片!'

);

/*

構造函數：函數初始化

*/

function __construct($PICTURE_URL)

{

$this->get_info($PICTURE_URL);

}

function get_info($PICTURE_URL)

{

/*

處理原圖片的信息,先檢測圖片是否存在,不存在則給出相應的信息

*/

@$SIZE=getimagesize($PICTURE_URL);

if(!$SIZE)

{

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

}

//得到原圖片的信息類型、寬度、高度

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

$this->PICTURE_;

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

//創建圖片

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;

}

/*

文字顏色轉換16進制轉換成10進制

*/

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

/*

將16進制的顏色轉換成10進制的（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]);

}

}

//縮放類型

function zoom_type($ZOOM_TYPE)

{

$this->ZOOM=$ZOOM_TYPE;

}

//對圖片進行縮放,如果不指定高度和寬度就進行縮放

function zoom()

{

//縮放的大小

if($this->ZOOM==0)

{

$this->ZOOM_;gt;PICTURE_WIDTH * $this->ZOOM_MULTIPLE;

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

}

//新建一個真彩圖象

$this->TRUE_COLOR=imagecreatetruecolor($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

//裁切圖片,按坐標或自動

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

/*

在圖片上放文字或圖片

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 字體的文本的范圍

*/

$TEMP = imagettfbbox($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];

/*

文字水印的默認位置為右下角

*/

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);

}

/*

水印圖片

*/

function _mark_picture()

{

/*

獲取水印圖片的信息

*/

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

if(!$SIZE)

{

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

}

$FORCE_PICTURE_;

$FORCE_PICTURE_HEIGHT=$SIZE[1];

//創建水印圖片

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;

}

/*

判斷水印圖片的大小，并生成目標圖片的大小，如果水印比圖片大，則生成圖片大小為水印圖片的大小。否則生成的圖片大小為原圖片大小。

*/

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

if($FORCE_PICTURE_WIDTH>$this->PICTURE_WIDTH)

{

$CREATE_;gt;FORCE_START_X;

}

else

{

$CREATE_;gt;PICTURE_WIDTH;

}

if($FORCE_PICTURE_HEIGHT>$this->PICTURE_HEIGHT)

{

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

}

else

{

$CREATE_HEIGHT=$this->PICTURE_HEIGHT;

}

/*

創建一個畫布

*/

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

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

/*

將背景圖拷貝到畫布中

*/

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

/*

將目標圖片拷貝到背景圖片上

*/

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;

}

}

}

/*

圖片旋轉:

沿y軸旋轉

*/

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軸旋轉

*/

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);

}

}

/*

任意角度旋轉

*/

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);

}

/*

圖片銳化

*/

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);

}

}

}

/*

將圖片反色處理??

*/

function return_color()

{

/*

創建一個畫布

*/

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

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

/*

將背景圖拷貝到畫布中

*/

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

$this->TRUE_COLOR=$NEW_PICTURE_CREATE;

}

/*

生成目標圖片并顯示

*/

function show()

{

// 判斷瀏覽器,若是IE就不發送頭

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);

}

/*

生成目標圖片并保存

*/

function save_picture()

{

// 以 JPEG 格式將圖像輸出到瀏覽器或文件

$OUT=$this->PICTURE_TYPE;

if(function_exists($OUT))

{

// 判斷瀏覽器,若是IE就不發送頭

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);

}

}

}

/*

析構函數：釋放圖片

*/

function __destruct()

{

/*釋放圖片*/

imagedestroy($this->TRUE_COLOR);

imagedestroy($this->PICTURE_CREATE);

}

//end of class

}

?>