Preg replace callback. Preg_replace($this->getvalidationregexp(), '', $host, 1, $count);. <?php echo preg_replace('#a.b#', '!', 'ahb acb aeb aeeb adcb axeb'); ?>. preg_replace.

Preg replace callback. Preg_replace($this->getvalidationregexp(), '', $host, 1, $count);. <?php echo preg_replace('#a.b#', '!', 'ahb acb aeb aeeb adcb axeb'); ?>. preg_replace.
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