source code
<?hh
#
# The Computer Language Benchmarks Game
# http://benchmarksgame.alioth.debian.org/
#
# reverse complement in PHP
# contributed by Danny Sauer
# modified by Craig Russell
# PHP as HHVM/Hack by Isaac Gouy
ob_implicit_flush(1);
ob_start(NULL, 4096);
$seq = '';
# read in the file, a line at a time
do {
$str = trim(fgets(STDIN));
if( $str[0] == '>' ){
# if we're on a comment line, print the previous seq and move on
if($seq != ''){
echo wordwrap( strrev( strtr(strtoupper($seq),
'CGATMKRYVBHD', 'GCTAKMYRBVDH') ), 60, "\n", true ), "\n";
$seq = '';
}
echo $str, "\n";
}else{
# otherwise, just append to the sequence
$seq .= $str;
}
} while( !feof(STDIN) );
if($seq != ''){
echo wordwrap( strrev( strtr(strtoupper($seq),
'CGATMKRYVBHD', 'GCTAKMYRBVDH') ), 60, "\n", true ), "\n";
}