What does PHP deserialization character escape mean

This article mainly introduces the meaning of PHP deserialization character escape, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

1. When developers use to serialize the object first, then filter the characters in the object, and then deserialize it.

At this point, it is possible to create a PHP deserialization character escape vulnerability.

2. More characters after filtering and fewer characters after filtering.

After filtering, the characters become multiple instances.

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