为啥我的报错呢?

来源:2-7 测试验证码类

wuyongming

2017-09-22 20:49

http://img4.mukewang.com/59c5066b0001ccf509661046.jpg

<?php

 Class Captcha{

//字体文件

private $_fontfile ='';

//画布宽度和高度

private $_width =120;

private $_height =40;

    //字体大小

    private $_size =20;

    //验证吗长度

    private $_length =4;

    //画布资源

    private $_image =null;

    //干扰元素

    //雪花*个数

    private $_snow =0;

    //像素个数

    private $_pixel =0;

    //线段个数

    private $_line =0;

    /**

     * 初始化数据

     * @param  array  $config 

     */

public function _construct($config=array()){

if(is_array($config)&&count($config)>0){

//检测字体是否存在并且可读

if (isset($config['fontfile'])&&is_file('fontfile')&&is_readable('fontfile')) {

$this->_fontfile = $config['fontfile'];

}else{

return false;

}

//检测是否设置画布宽和高

if (isset($config['width'])&&$config['width']>0) {

$this->_width = (int)$config['width'];

}

if (isset($config['height'])&&$config['height']>0) {

$this->_height = (int)$config['height'];

}

if (isset($config['size'])&&$config['size']>0) {

$this->_size = (int)$config['size'];

   }

   //检测是否设置验证码长度

   if (isset($config['length'])&&$config['length']>0) {

$this->_length = (int)$config['length'];

   }

            $this->_image = imagecreatetruecolor($this->_width, $this->_height);

            return $this->_image;

   //配置干扰元素

   if (isset($config['snow'])&&$config['snow']>0) {

    $this->_snow = (int)$config['snow'];

   }

   if (isset($config['pixel'])&&$config['pixel']>0) {

    $this->_pixel = (int)$config['pixel'];

   }

   if (isset($config['line'])&&$config['line']>0) {

    $this->_line = (int)$config['line'];

   }

  

   }else{

    return false;

   }

    }

    /**

     * 得到验证码

     * @return [type] [description]

     */

    public function getCaptcha(){

    $white = imagecolorallocate($this->_image, 255,255,255);

    //填充矩形

    imagefilledrectangle($this->_image, 0, 0, $this->_width, $this->_height,$white);

    //生成验证码

    $str = $this->_generateStr($this->_length);

    if (false===$str) {

    return false;

    }

    //绘制验证码

    for ($i=0; $i < $this->_length; $i++) { 

    $size = $this->_size;

    $angle = mt_rand(-30,30);

    $x = ceil($this->_width/$this->_length)*$i+mt_rand(5,10);

    $y = ceil($this->_height/1.5);

            $color = $this->_getRandColor();

            //中文$text = mb_substr($str,$i,1,'utf-8');

            $text = $str($i);

            $fontfile = $this->_fontfile;

    imagettftext($this->_image, $size, $angle, $x, $y, $color, $fontfile, $text);

    }

    //雪花,像素和线段

    if ($this->_snow) {

    //使用雪花当作干扰元素

    $this->_getSnow();

    }else{

    if ($this->_pixel) {

    $this->_getPixel();

    }

    if ($this->_line) {

    $this->_getLine();

    }

    }

    //输出图像

    header("Content-type:image/png");

        imagepng($this->_image);

        imagedestroy($this->_image);

        return strtolower($str);

    }

    /**

     * 产生雪花

     * @return [type] [description]

     */

    private function _getSnow(){

    for ($i=1; $i <=$this->_snow ; $i++) { 

    imagestring($this->_image, mt_rand(1,5), mt_rand(0,$this->_width), mt_rand(0,$this->_height), '*', $this->_getRandColor());

    }

    }

    /**

     * 绘制像素

     * @return [type] [description]

     */

    private function _getPixel(){

    for ($i=1; $i < $this->_pixel; $i++) { 

    imagesetpixel($this->_image, mt_rand(0,$this->_width), mt_rand(0,$this->_height), $this->_getRandColor());

    }

    }

    /**

     * 绘制线段

     * @return [type] [description]

     */

    private function _getLine(){

    for ($i=1; $i < $this->_line; $i++) { 

    imageline($this->_image, mt_rand(0,$this->_width), mt_rand(0,$this->_height), mt_rand(0,$this->_width), mt_rand(0,$this->_height), $this->_getRandColor());

    }

    }

    /**

     * 产生验证码字符

     * @param  integer $length 验证码长度

     * @return string 随机字符

     */

    private function _generateStr($length=4){

    if ($length<1 || $length>30) {

    return false;

    }

    $chars = array('a','b','c','d','e','f','g','h','k','m','n','p','x','y','z','A','B','C','D','E','F','G','H','K','M','N','P','X','Y','Z',1,2,3,4,5,6,7,8,9);

    $str = join('',array_rand(array_flip($chars),$length));

    return $str;

    }

    private function _getRandColor(){

    return imagecolorallocate($this->_image,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));

    }

 }

 ?>


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4回答

  • 慕码人1187127
    2019-01-05 14:27:57

    哥们,构造函数construct前面是两个下划线,这是个大坑!

  • qq_扶摇_2
    2018-04-28 17:01:08

    你这个应该是new实例化的时候,传进去的参数需要是一个数组,包含fontfile这个元素的数组(你这个报错不是资源,是因为构造里面,在检测字体文件那一步没有通过,没有进去到里面创建画布所致)

  • 白小纯King
    2017-10-24 12:54:04
    <?php
    Class Captcha {
        // 字体文件
        private $_fontFile="";
        // 字体大小
        private $_size=20;
        // 画布宽度
        private $_width=120;
        // 画布高度
        private $_height=40;
        // 验证码长度
        private $_length=5;
        // 画布资源
        private $_image=null;
        private $_snow=0;
        private $_pixel=0;
        private $_line=0;
        public function __construct($config=array()){
            if(is_array($config) && count($config)>0){
                if(isset($config['fontFile']) && is_file($config['fontFile'])&& is_readable($config['fontFile'])){
                    $this->_fontFile=$config['fontFile'];
                }
                // 检测是否设置字体大小
                if(isset($config['size']) && $config['size']>0){
                    $this->_size=(int)$config['size'];
                }
                // 检测是否设置宽和高
                if(isset($config['width']) && $config['width']>0){
                    $this->_width=(int)$config['width'];
                }
                if(isset($config['height']) && $config['height']>0){
                    $this->_height=(int)$config['height'];
                }
                // 检测是否设置验证码长度
                if(isset($config['length']) && $config['length']>0){
                    $this->_length=(int)$config['length'];
                }
    
                // 配置干扰元素
                if(isset($config['snow']) && $config['snow']>0){
                    $this->_snow=(int)$config['snow'];
                }
                if(isset($config['pixel']) && $config['pixel']>0){
                    $this->_pixel=(int)$config['pixel'];
                }
                if(isset($config['line']) && $config['line']>0){
                    $this->_line=(int)$config['line'];
                }
                $this->_image=imagecreatetruecolor($this->_width, $this->_height);
                return $this->_image;
            }
        }
    
        public function getCaptcha(){
            $bgRandCol=imagecolorallocate($this->_image, mt_rand(200,255), mt_rand(200,255), mt_rand(200,255));
            imagefilledrectangle($this->_image, 0, 0, $this->_width, $this->_height, $bgRandCol);
            $str=$this->_generateStr($this->_length);
            if(false===$str){
                return false;
            }
            $fontFile=$this->_fontFile;
            for ($i=1;$i<$this->_length;$i++){
                $size=$this->_size;
                $angle=mt_rand(-30, 30);
                $x=ceil($this->_width/$this->_length)*$i+mt_rand(5,10);
                $y=ceil($this->_height/1.5);
                $text=$str[$i];
                imagettftext($this->_image, $size, $angle, $x, $y, $this->getRandCol(), $fontFile, $text);
            }
            if($this->_snow>0){
                $this->_getSnow();
            }else{
                if($this->_pixel>0){
                    $this->_getPixel();
                }
                if($this->_line>0){
                    $this->getLine();
                }
            }
            header('Content-type:image/png');
            imagepng($this->_image);
            imagedestroy($this->_image);
        }
    
        private function _getSnow(){
            for($i=1;$i<=$this->_snow;$i++){
                imagestring($this->_image, mt_rand(1,5), mt_rand(0, $this->_width), mt_rand(0, $this->_height), '*', $this->getRandCol());
            }
        }
    
        private function _getPixel(){
            for($i=1;$i<=$this->_pixel;$i++){
                imagesetpixel($this->_image, mt_rand(0, $this->_width), mt_rand(0, $this->_height), $this->getRandCol());
            }
        }
    
        private function getLine(){
            for($i=1;$i<=$this->_line;$i++){
                imageline($this->_image,mt_rand(0, $this->_width), mt_rand(0, $this->_height),mt_rand(0, $this->_width), mt_rand(0, $this->_height),$this->getRandCol());
            }
        }
        private function getRandCol(){
            return imagecolorallocate($this->_image, mt_rand(10, 100), mt_rand(10, 100), mt_rand(10, 100));
        }
    
        private function _generateStr($length=4){
            if($length<1 || $length>30){
                return false;
            }
            $chars=array(
                'a','b','c','d','e','f','g','h','k','m','n','p','x','y','z','A','B','C','D','E','F','G','H','K','M','N','P','X','Y','Z', 2,3,4,5,6,7,8,9
            );
            $str=join('',array_rand(array_flip($chars),$length));
            return $str;
        }
    }

    我这边更改了一些,$_length有个问题,设置的时候要多加一个,要不然设置为4,显示只有3个str

  • TendeRess
    2017-10-08 18:34:12
    //看一下我写的,你的里面有好多小错误点,我就不一一列举了
    <?php
    class Captcha{
    	//字体文件
    	private $_fontfile = '';
    	//画布宽度
    	private $_width = 120;
    	//画布宽度
    	private $_height = 40;
    	//字体大小
    	private $_size = 20;
    	//验证码长度
    	private $_length = 4;
    	//画布资源
    	public $_image = null;
    	//干扰元素,雪花数量
    	private $_snow = 0;
    	private $_pixel = 0;
    	private $_line = 0;
    	/**
    	 * [初始化数据]
    	 * @param array $config 
    	 */
    	public function __construct($config=array()){
    		if(is_array($config)&&count($config)>0){
    			//检测字体文件是否存在并且可读
    			if(isset($config['fontfile'])&&is_file($config['fontfile'])&&is_readable($config['fontfile'])){
    				$this->_fontfile = $config['fontfile'];
    				//检测是否设置画布宽和高
    				if(isset($config['width'])&&$config['width']>0){
    					$this->_width = (int)$config['width'];
    				}
    				if(isset($config['height'])&&$config['height']>0){
    					$this->_height = (int)$config['height'];
    				}
    				//检测是否设置字体大小
    				if(isset($config['size'])&&$config['size']>0){
    					$this->_size = (int)$config['size'];
    				}
    				//检测是否设置验证码
    				if(isset($config['length'])&&$config['length']>0){
    					$this->_length = (int)$config['length'];
    				}
    				//检干扰元素
    				if(isset($config['snow'])&&$config['snow']>0){
    					$this->_snow = (int)$config['snow'];
    				}
    				if(isset($config['pixel'])&&$config['pixel']>0){
    					$this->_pixel = (int)$config['pixel'];
    				}
    				if(isset($config['line'])&&$config['line']>0){
    					$this->_line = (int)$config['line'];
    				}
    				$this->_image = imagecreatetruecolor($this->_width, $this->_height);
    				return $this->_image;
    			}
    			else{
    				return false;
    			}
    			
    		}
    		else{
    			return false;
    		}
    	}
    	private function _getRandColor(){
    		return imagecolorallocate($this->_image,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));
    	}
    	/**
    	 * 得到验证码
    	 * @return [type] [description]
    	 */
    	public function getCaptcha(){
    		$white = imagecolorallocate($this->_image,255,255,255);
    		//填充矩形
    		imagefilledrectangle($this->_image, 0, 0, $this->_width, $this->_height, $white);
    		//生成验证码
    		$str = $this->_generateStr($this->_length);
    		if(false===$str)
    			return false;
    		$fontfile = $this->_fontfile;
    		//绘制
    		for($i=0;$i<$this->_length;$i++){
    			$size = $this->_size;
    			$angle = mt_rand(-30,30);
    			$x = ceil($this->_width/$this->_length)*$i+mt_rand(5,10);
    			$y = ceil($this->_height/1.5);
    			$color = $this->_getRandColor();
    			//$this->不要忘啦写
    			// $text = mb_substr($str,$i,i,'utf-8');
    			$text = $str{$i};
    			//这里是大括号!!!掉坑里了
    			imagettftext($this->_image, $size, $angle, $x, $y, $color, $fontfile ,$text);
    		}
    		//干扰元素
    		if($this->_snow){
    			$this->_getSnow();
    		}else{
    			if($this->_pixel){
    				$this->_getPixel();
    			}
    			if($this->_line){
    				$this->_getLine();
    			}
    		}
    		//输出图像
    		header('content-type:image/png');
    		imagepng($this->_image);
    		imagedestroy($this->_image);
    		return strtolower($str);
    	}
    	/**
    	 * 产生雪花干扰元素
    	 * @return [type] [description]
    	 */
    	private function _getSnow(){
    		for($i=1;$i<=$this->_snow;$i++){
    			imagestring($this->_image, mt_rand(1,5), mt_rand(0,$this->_width),mt_rand(0,$this->_height),'*',$this->_getRandColor());//第二个参数是字体大小在1-5
    		}
    	}
    	/**
    	 * 绘制像素
    	 * @return [type] [description]
    	 */
    	private function _getPixel(){
    		for($i=1;$i<=$this->_pixel;$i++){
    			imagesetpixel($this->_image, mt_rand(0,$this->_width),mt_rand(0,$this->_height),$this->_getRandColor());
    		}
    	}
    	/**
    	 * 绘制线段
    	 * @return [type] [description]
    	 */
    	private function _getLine(){
    		for($i=1;$i<=$this->_line;$i++){
    			imageline($this->_image, mt_rand(0,$this->_width),mt_rand(0,$this->_height),mt_rand(0,$this->_width),mt_rand(0,$this->_height), $this->_getRandColor());
    		}
    	}
    	/**
    	 * 产生验证码字符
    	 * @param  integer $length [验证码长度]
    	 * @return 随机字符 string          
    	 */
    	private function _generateStr($length=4){
    		if($length<1 || $length>30){
    			return false;
    		}
    		$chars = array('a','b','c','d','e','f','g','h','i','j','k','m','n','p','x','y','z','A','B','C','D','E','F','G','H','I','J','K','M','N','P','X','Y','Z',1,2,3,4,5,6,7,8,9);
    		$str = join('',array_rand(array_flip($chars),$length));
    		return $str;
    	}
    	
    }
    ?>


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