Reporting weird characters in results

[wanderleyteixeira]

I am running this script on a Linux 2.6.22.19 mips with PHP 5.6.0.
When I run I get:

Getting download for Toronto, ON(CA) from http://speedtest.knet.ca
Size 2500x2500:
Url: http://speedtest.knet.ca/speedtest/random2500x2500.jpg?x=1235718516-1
Downloaded 12..3MB in 5.04s at 2/...Mbps

Avarage transfer rate:  2/...Mbps

Getting uploads for Toronto, ON(CA) from http://speedtest.knet.ca
Size 10M:
Url: http://speedtest.knet.ca/speedtest/upload.php?x=0.1235718516
Uploaded 10MB in 0.07s at 1143./,Mbps

Avarage transfer rate:  1143./,Mbps

Avarage results
Latency: 0.07s
Download transfer rate: 2/...Mbps
Upload transfer rate: 1143./,Mbps

How can I best troubleshoot this to understand why its displaying those weird chars in the results?
Any help would be appreciated.