PHP还原BB代码

	
$bb1 = array(
"/\[url\](.*?)\[\/url\]/is",
"/\[img\](.*?)\[\/img\]/is",
"/\[img\=(.*?)\](.*?)\[\/img\]/is",
"/\[url\=(.*?)\](.*?)\[\/url\]/is",
"/\[red\](.*?)\[\/red\]/is",
"/\[b\](.*?)\[\/b\]/is",
"/\[h(.*?)\](.*?)\[\/h(.*?)\]/is",
"/\[php\](.*?)\[\/php\]/is"
);
 
$bb2 = array(
'<a href="\\1">\\1</a>',
'<img alt="" src="\\1"/>',
'<img alt="" class="\\1" src="\\2"/>',
'<a rel="nofollow" target="_blank" href="\\1">\\2</a>',
'<span style="color:#ff0000;">\\1</span>',
'<span style="font-weight:bold;">\\1</span>',
'<h\\1>\\2</h\\3>',
'<pre><code class="php">\\1</code></pre>'
);
 
$html = preg_replace($bb1, $bb2, $html);

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