[bench] String concatenation versus printing string

gistfile1.aw

<?php

echo '<div style="display: none;">';

$s1 = microtime(true);

for ($i = 0; $i < 1000000; ++$i) {

    echo 'a'.'b';

}

$e1 = microtime(true) - $s1;

$s2 = microtime(true);

for ($i = 0; $i < 1000000; ++$i) {

    echo 'a', 'b';

}

$e2 = microtime(true) - $s2;

echo '</div>';

echo '<br /><br />';

echo $e1;
echo '<br />';
echo $e2;
echo '<br />';
echo $e1 - $e2;

// esmu kruts

0.35480618476868
0.31502389907837
0.039782285690308