php代码审计学习之函数缺陷
# PHP代码审计之函数缺陷全面解析
## 一、in_array函数缺陷
### 1. 基础缺陷分析
```php
class Challenge {
const UPLOAD_DIRECTORY = './solutions/';
private $file;
private $whitelist;
public function __construct($file) {
$this->file = $file;
$thi
2025-08-19 23:29:46
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