求截取PHP指定字符串代码,该怎么解决

WBOY
Release: 2016-06-13 11:52:41
Original
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求截取PHP指定字符串代码
有下面一段html字符串:

aaaa
bbbb
cccc
dddd
 >
要想输出下面内容:
aaaa
dddd
 >
即删除中间两个
前面的内容及
的简易代码,由于还要输出为html,不用数组方式。
------解决方案--------------------
$s = '<td align="Center" rowspan="2" width="7%">aaaa<br>bbbb<br>cccc<br>dddd<br></td >';<br />echo preg_replace('/<br>\w+/', '', $s, 2);
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<td align="Center" rowspan="2" width="7%">aaaa<br>dddd<br></td ><br />
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------解决方案--------------------
1
echo preg_replace('/<br>[^<]+/', '', $s, 2);
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2
echo preg_replace('/\(.+?\)/', '', $s);
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------解决方案--------------------
echo preg_replace_callback('/<br>[^<]+/', 'foo', $s, 2); <br />function foo($m){<br />     return strpos($m[0], '(') !== false ? preg_replace('/\(.+?\)/','',$m[0]) : '';	    	 <br />}
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