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编写PHP脚本过滤用户上传的图片_PHP

May 30, 2016 am 08:45 AM
php filter

示例   下载

我在phpclasses.org上面偶然发现一个很有用的,由Bakr Alsharif开发的可以帮助开发者基于皮肤像素点来检测图片裸照的类文件.

它会分析在一张图片的不同部分使用的颜色,并决定其是否匹配人类皮肤颜色的色调.

作为分析的结果,他会返回一个反映图片包含裸露的可能性的分值.

此外,他还可以输出被分析的图片,上面对使用给定颜色的肤色的像素进行了标记.

当前它可以对PNG,GIF和JPEG图片进行分析.

下面展示了如何使用这个PHP类.
让我们先从包含裸体过滤器,nf.php文件开始.
 

include ('nf.php');
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接下来,创建一个新的名叫ImageFilter的类,然后把它放到一个叫做$filter的变量中.

$filter = new ImageFilter;
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获取图片的分值并将其放到一个$score变量中.

$score = $filter -> GetScore($_FILES['img']['tmp_name']);
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如果图片分值大于或等于60%,那就展示一条(告警)消息.


if($score >= 60){
/*Message*/
}
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下面是所有的PHP代码:

 
<?php
/*Include the Nudity Filter file*/
include ('nf.php');
/*Create a new class called $filter*/
$filter = new ImageFilter;
/*Get the score of the image*/
$score = $filter -> GetScore($_FILES['img']['tmp_name']);
/*If the $score variable is set*/
if (isset($score)) {
  /*If the image contains nudity, display image score and message. Score value if more than 60%, it is considered an adult image.*/
  if ($score >= 60) {
    echo "Image scored " . $score . "%, It seems that you have uploaded a nude picture.";
  /*If the image doesn't contain nudity*/  
  } else if ($score < 0) {
    echo "Congratulations, you have uploaded an non-nude image.";
  }
}
?>
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标记语言

我们可以使用一个基础的HTML表单上传图片.

<form method="post" enctype="multipart/form-data" action="<&#63;php echo $SERVER['PHP_SELF'];&#63;> ">
Upload image: 
<input type="file" name="img" id="img" />
<input type="submit" value="Sumit Image" />
</form>
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