htonl necesssary for PQexecParams input?

Previously I was getting a bad result when calling PQexecParams with
binary results because PostgreSQL stores its data big endian.  So I
had to do ntohl on the result to get it to little endian.

My question is, do I also need to do htonl then, as in this scenario?

outStr[0]="blah";
outLengths[0]=htonl((int)strlen("blah"));
formats[0]=1;
PQexecParams(pgConn, query,1,0,outStr,outLengths,formats,1);