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run code in 200+ php & hhvm versions
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<?php $title = 'Peugeot 107'; $patterns = array('/107/', '/108/', '/207/', '/208/', '/2008/', '/308/', '/3008/', '/508/', '/5008 SW/' ); echo preg_replace($patterns, '/<span class="h1firstword">$1</span>', $title); ?>
Output for 4.3.0 - 7.2.0
Peugeot /<span class="h1firstword"></span>