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<?php $x = str_repeat('foo', 500000); $y = 'bar'; // $before = microtime(1); $x . $y; // printf('%f'."\n", microtime(1) - $before); // $x = str_repeat('foo', 500000); // $y = 'bar'; // $before = microtime(1); $x .= $y; // printf('%f'."\n", microtime(1) - $before);
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