According to the teacher's code, a syntax error occurred: unexpected 'return' (T_RETURN)

Question

My PHP version is 5.5.38. Baidu online said to switch the PHP version.

Hhj · Answer

Test code

}}G($`FEU(%ZN(UR])(@%QD.png

Hhj · Answer

Test and Sysbd codes are as follows

$@()5@3A{YGCB_H{W_9FLVLJ.png$

马先生 · Answer

Where is the code? There is no code. What can you say?

jjJ · Answer

Where is the code?