Learn about encapsulating verification codes in PHP in one minute (Part 2)

慕斯
Release: 2023-03-10 21:48:02
Original
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PHP中我们了解了那么多关于php的知识,不知道你们对封装验证码有多少了解,我相信很大一部分人会不知道这部分知识点,那么不急本篇文章就是带领大家更深刻的去了解这个内容。

相关推荐:一分钟学会PHP中关于封装验证码(上)

关于封装验证码下:

首先我们先新建一个文件,然后写上他们的条件,宽,高,字母,数字,字母数字混合,干扰点,背景色,字体颜色等;紧接着我们定义一个函数,然后,我们开始准备画布,生成颜色,以及我们所需要的什么样的字符,干扰点和准备输出的类型,准备输出的图片到最后的销毁;

具体代码如下:

//4开始写字

for($i=0;$i<$num;$i++){
  $x =floor ($width / $num) *$i;
  $y= mt_rand(10 ,$height - 20) ;
  imagechar($image,5,$x ,$y,$string[$i] ,deepColor ()) ;
}
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//5干扰线(点)

for ($i = 0; $i<$num ; $i++) (
  imagearc ($image,mt_rand(10 ,$width) ,mt_rand(10 ,$height) ,mt_rand(10 ,$width) ,
  mt_rand(10,$height) ,mt_rand(0,10),mt_rand(0,270) ,deepColor($image));
}
for ($1 =0; $i<50 ; $1++){
imagesetpixel ($image,mt_rand(O,$width) ,mt_rand(0 ,$height) ,deepColor ($image)) ;
}
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//6指定输出的类型

header (&#39;Content - type : image/png&#39; ) ;
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//7准备输出图片

imagepng ($image) ;
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//8 销毁

imagedestroy ($image) ;
return $string;
}
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根据以上我们代码演示,我们需要去建立他们的规格,颜色以及我们所需要的字符样式等等;

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