3v4l.org

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<?php $str = 'asdfnsdfasdjkl <span class="number_box">1.<\/span> asdfkjsadfasd'; printf (preg_replace('/<span class="number_box">(\d).<\/span>/', '<span class="number_box">$1</span>', $str));

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49.11 ms | 402 KiB | 5 Q