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/**
* Created by PhpStorm.
* User: MCtion
* Date: 2015/5/14 0014
* Time: 15:36
* Simple image class library. All relative paths in this class are based on the website root directory. If you need to modify it, just modify the constant __WEBROOT__
* Function: Specify text content to create pictures (Chinese is not supported), create verification code pictures, create thumbnails, other functions to be continued
* Method:
* Style(array $Options) sets the image style and will be reset to the default style before each setting
* Create_Img_Png() creates a PNG image, and the related attributes are specified by Style
* Create_Img_Jpeg() creates a JPEG image, and the related attributes are specified by Style
* Create_Verify() creates a verification code image, and the relevant attributes are specified by Style
* Get_Verify() Get the created verification code value, MD5 encryption
* Load_Img(string $FilePath) loads the image and creates an image source for other methods to call the source. FilePath is the relative path of the image
* Create_Thumb(string $FileName,string $FilePath) creates a thumbnail of the image loaded by Load_Img(), FileName is the prefix of the saved image, and FilePath is the relative path of the saved image, excluding the file name (example: / Uploads/images/Thumb/)
*/
if(!defined("__WEBROOT__")) define("__WEBROOT__",$_SERVER['DOCUMENT_ROOT']);
class Img {
protected $_Img; //图片源
protected $_FileImg; //加载的图片源
protected $_FileInfo; //加载的图片的信息数组
protected $_PicInfo; //加载的图片的宽高等信息数组
protected $_Rand = 'abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ1234567890'; //随机因子
protected $_Code = ''; //验证码
public $Width = 300;//图片默认宽
public $Height = 80; //图片默认高
public $BackgroundColor = "000000";
public $Font = "/phps/Public/Font/ARIALNB.TTF"; //默认字体
public $FontSize = 16; //默认字体字号
public $FontColor = "ffffff"; //默认字体颜色
public $Content = "Test Word";
public $Align = "left";
public $Codes = 4; //验证码个数
public $Line = 6; //干扰线条的个数
public $LoadErr = ''; //错误信息
//public function __construct(){}
/**Set image properties
* @param array $Options attribute array
* @return $this return object
*/
public function Style($Options){
$this -> _Re_Set();
foreach($Options as $K=>$V){
if(in_array($K,array('Width','Height','BackgroundColor','Font','FontSize','FontColor','Content','Align','Codes','Line','Snow'))){
if($K == "BackgroundColor" || $K == "FontColor"){
if(preg_match("#([a-zA-Z0-9]{6})#",$V)) $this -> $K = $V;
}else{
$this -> $K = $V;
}
}
}
return $this;
}
/**
* Reset properties, do not provide external access
*/
protected function _Re_Set(){
$this -> Width = 100;
$this -> Height = 30;
$this -> BackgroundColor = "000000";
$this -> Font = "/phps/Public/Font/ARIALNB.TTF";
$this -> FontSize = 16;
$this -> FontColor = "ffffff";
$this -> Align = "left";
$this -> Codes =4;
$this -> Line = 6;
}
/**
* Create image source, add background, create image
* @param bool $BGC specifies whether to create a background color and rectangular block
*/
protected function _Create_Img_GB($BGC = True){
$this -> _Img = imagecreatetruecolor($this -> Width,$this -> Height); //Create background source
if($BGC){
preg_match("#([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})# ",$this -> BackgroundColor,$ColorArr); //Separate the color value into three groups of 16-digit numbers
$Color = imagecolorallocate($this -> _Img,hexdec($ColorArr[1]),hexdec($ColorArr[2]),hexdec($ColorArr[3])); //Add to Img image source Background color
imagefilledrectangle($this -> _Img,0,$this -> Height,$this -> Width,0,$Color); //Create image
}
}
/**
* Create random verification code
*/
protected function _Create_Code(){
$Len = strlen($this -> _Rand) - 1;
for($i = 0;$i < $this -> Codes;$i ){
$this -> _Code .= $this -> _Rand[mt_rand(0,$Len)];
}
}
/**
* Write a string to the image, Chinese is not supported yet
*/
protected function _Write_Text(){
$FontWidth = imagefontwidth($this -> FontSize); //Get the width of one character of the font size
preg_match_all('/(.)/us', $this -> Content, $TextArr); //Separate the content into arrays and count the number in one pass
$FontHeight = imagefontheight($this -> FontSize); //Get the height of the font size
$X = ceil(($this -> Width - ($FontWidth * count($TextArr[0])))) / 2); //Set the distance of the X axis from the left margin
$Y = ceil(($this -> Height $FontHeight) / 2); //Set the distance from the Y axis to the top margin
preg_match("#([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})# ",$this -> FontColor,$ColorArr);
$Color = imagecolorallocate($this -> _Img,hexdec($ColorArr[1]),hexdec($ColorArr[2]),hexdec($ColorArr[3])); //Set text color
imagettftext($this -> _Img,$this -> FontSize,0,$X,$Y,$Color,__WEBROOT__.$this -> Font,$this -> Content); //Write Enter content
}
/**
* Write verification code to image
*/
protected function _Write_Code(){
$_X = $this -> Width / $this -> Codes; //Set the aspect ratio
for($i = 0;$i < $this -> Codes;$i ){ //Loop Codes times, generating a verification code value each time
$Color = imagecolorallocate($this -> _Img,mt_rand(0,156),mt_rand(0,156),mt_rand(0,156)); //Randomly generate the color of the verification code value
imagettftext($this -> _Img,$this -> FontSize,mt_rand(-30,30),$_X*$i mt_rand(1,5),$this -> Height / 1.3,$Color ,__WEBROOT__.$this -> Font,$this -> _Code[$i]); //Generate a one-digit verification code value
}
}
/**
* Write interference lines to the image
*/
protected function _Write_Line() { //Generate interference lines
for ($i=0;$i < $this -> Line;$i ) {
$Color = imagecolorallocate($this -> _Img,mt_rand(0,156),mt_rand(0,156),mt_rand(0,156));
imageline($this -> _Img,mt_rand(0,$this -> Width),mt_rand(0,$this -> Height),mt_rand(0,$this -> Width),mt_rand( 0,$this -> Height),$Color);
}
}
/**
* Set image type to JPEG
*/
protected function _Img_Jpeg(){
header('Content-type:image/jpeg');
imagejpeg($this -> _Img);
imagedestroy($this -> _Img);
}
/**
* 设置图像类型为PNG
*/
protected function _Img_Png(){
header('Content-type:image/png');
imagepng($this -> _Img);
imagedestroy($this -> _Img);
}
/**
* Create JPEG string image
*/
public function Create_Img_Jpg(){
$this -> _Create_Img_GB(True);
$this -> _Write_Text();
$this -> _Img_Jpeg();
}
/**
* Create PNG string image
*/
public function Create_Img_Png(){
$this -> _Create_Img_GB(True);
$this -> _Write_Text();
$this -> _Img_Png();
}
/**
* Create a PNG image of the verification code
*/
public function Create_Verify(){
$this -> BackgroundColor = '';
for($I = 0;$I < 3;$I ){
$this -> BackgroundColor .= dechex(mt_rand(20,155));
}
$this -> _Create_Img_GB(True);
$this -> _Create_Code();
$this -> _Write_Line();
$this -> _Write_Code();
$this -> _Img_Png();
}
/**
* Obtain MD5 encrypted verification code externally
* @return string
*/
public function Get_Verify(){
return md5($this -> _Code);
}
/**
* Load an image file and obtain image related information
* @param string $FilePath image relative path address
* @return $this|bool returns the object successfully, otherwise returns FALSE
*/
public function Load_Img($FilePath){
$FilePath = __WEBROOT__.$FilePath;
if(!is_file($FilePath)){
$this -> LoadErr = "路径错误，文件不存在";
Return False;
}
$this -> _PicInfo = getimagesize($FilePath);
$this -> _FileInfo = pathinfo($FilePath);
switch($this -> _PicInfo[2]){
case 1:$this ->_FileImg = imagecreatefromgif($FilePath);break;
case 2:$this ->_FileImg = imagecreatefromjpeg($FilePath);break;
case 3:$this ->_FileImg = imagecreatefrompng($FilePath);break;
default:$this -> LoadErr = "类型错误，不支持的图片类型";Return False;
}
Return True;
}
/**
* Create thumbnails
* @param string $FileName Saved picture name prefix
* @param string $FilePath relative path to save the image
* @return mixed Returns the information array of the generated image
*/
public function Create_Thumb($FileName,$FilePath){
$SavePath = __WEBROOT__.$FilePath;
if(!file_exists($SavePath)){
mkdir($SavePath,0777,true);
}
$FileName = $FileName.date("YmdHis").rand(100,999).'.'.$this -> _FileInfo['extension'];
$FilePath = $FilePath.$FileName;
$SavePath = $SavePath.$FileName;
$this -> _Create_Img_GB(False);
imagecopyresampled($this -> _Img,$this -> _FileImg,0,0,0,0,$this -> Width,$this -> Height,$this -> _PicInfo[0],$this -> _PicInfo[1]);
switch($this -> _PicInfo[2]){
case 1:imagegif($this -> _Img,$SavePath);break;
case 2:imagejpeg($this -> _Img,$SavePath);break;
case 3:imagepng($this -> _Img,$SavePath);break;
}
$FIleInfo['FileName'] = $FileName;
$FIleInfo['FilePath'] = $FilePath;
Return $FIleInfo;
}
}
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