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PHP image processing class library and demonstration sharing_PHP tutorial
- WBOYOriginal
- 2016-07-13 09:53:56837browse
PHP image processing class library and demonstration sharing
I simply wrote a PHP image processing class library. Although it has relatively few functions, it is not too advanced at present. In the future Fill it out after you use it, or if anyone has any suggestions on what functions to add, or if you have any needs, you can tell me. I have time to add it. If anyone has expanded this class library, please share it with everyone. Come on, the code can be used now. There are not many things to consider. If you have any better suggestions, please tell me, thank you
Img.php
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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 $FIleInfo; } } |
使用示例
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$Img = new Img(); $Options['Width'] = 300; $Options['Height'] = 100; $Options['Content'] = "Test Create Img"; $Options['FontColor'] = "FF0000"; $Options['BackgroundColor'] = "AAAAAA"; $Img -> Style($Options) -> Create_Img_Jpg(); if($Img -> Load_Img("/Public/images/ad1.png")){ $FileInfo = $Img -> Style(array('Width'=>30,'Height'=>30)) -> Create_Thumb("Thumb","/Uploads/images/"); var_dump($FileInfo); }else{ die("加载图像失败,".$Img -> LoadErr); } |