invalid decode resuult

[raoqu]

sample input:

a:8:{s:2:"yj";s:5:"88.44";s:4:"unit";s:3:"件";s:7:"attrImg";s:65:"http://localhost:9000/mulins/1/1/20241203/1863919698764337152.jpg";s:2:"sj";r:2;s:4:"msrp";s:4:"null";s:5:"kucun";s:3:"199";s:3:"cbj";s:5:"73.70";s:9:"stockWarn";s:1:"3";}

result in a decode map:

Here "199" is not a key and "cbj" is not a value