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<?php $pattern = '~(?:(?<=<p class="code">\v)|(?!\A)\G\v*)^((?>(?!</p>)\V)*)(\v)~m'; $str = ' <p>hello see my css below</p> <p class="code"> h1 { font-size:10px font-color:#FFF } h2 { font-size:10px font-color:#FFF } </p> <p>123</p> <p class="code"> 1 2 3 </p>'; $str = preg_replace($pattern, '<code>\1</code>\2', $str); echo $str;
Output for git.master, git.master_jit, rfc.property-hooks
<p>hello see my css below</p> <p class="code"> <code>h1 { </code> <code>font-size:10px</code> <code>font-color:#FFF</code> <code>}</code> <code>h2 { </code> <code>font-size:10px</code> <code>font-color:#FFF</code> <code>}</code> </p> <p>123</p> <p class="code"> <code>1</code> <code>2</code> <code>3</code> </p>

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