hphp/runtime/vm/runtime.cpp
StringData* concat_is(int64_t v1, StringData* v2) {
  char intbuf[21];
  // Convert the int to a string
  auto const s1 = conv_10(v1, intbuf + sizeof(intbuf));
  auto const s2 = v2->slice();
  return StringData::Make(s1, s2);
}
/**
 * concat_is will incRef the output string
 */
concat_is will incRef the output string
concat_is will incRef the output string
StringData* concat_is(int64_t v1, StringData* v2) {
  char intbuf[21];
  auto const s1 = conv_10(v1, intbuf + sizeof(intbuf));
  auto const s2 = v2->slice();
  return StringData::Make(s1, s2);
}
StringData * concat_is ( int64_t v1 , StringData * v2 ) { char intbuf [ 21 ] ; auto const s1 = conv_10 ( v1 , intbuf + sizeof ( intbuf ) ) ; auto const s2 = v2 -> slice ( ) ; return StringData :: Make ( s1 , s2 ) ; }
concat_is will incRef the output string
concat_is will incRef the output string
// Convert the int to a string