Avoid additional allocation in Document\createElementNS

[nielsdos]

For the following benchmark code:

$dom = DOM\XMLDocument::createEmpty();
for ($i = 0; $i < 1000*100; $i++) $dom->createElementNS("urn:a", "thisisaveryverylongname");

We obtain the following on an i7-4790:

Benchmark 1: ./sapi/cli/php bench.php
  Time (mean ± σ):      34.5 ms ±   1.2 ms    [User: 31.4 ms, System: 2.9 ms]
  Range (min … max):    32.4 ms …  39.3 ms    84 runs

Benchmark 2: ./sapi/cli/php_old bench.php
  Time (mean ± σ):      36.6 ms ±   1.6 ms    [User: 33.6 ms, System: 2.9 ms]
  Range (min … max):    34.3 ms …  45.3 ms    80 runs

Summary
  ./sapi/cli/php bench.php ran
    1.06 ± 0.06 times faster than ./sapi/cli/php_old bench.php

[devnexen]

Do you plan to use it in other places ?

[nielsdos]

Do you plan to use it in other places ?

You mean use the alternative API in other places? No.