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本帖最后由 liuser_cn 于 2013-08-09 20:51:54 编辑

正则 PHP JavaScript HTML

$pattern_Title =   "/target=\"\_blank\"\>.*\<\/a\>s+\<\/h4\>/is";//。。。。

抓到这个'PHP';

<h4 id="a-nbsp-id-nbsp-istitle-true-nbsp-href-javascript-void-nbsp-onclick-makeDetailUrl-this-nbsp-search-showDocDetails-nbsp-nbsp-ucs-nbsp-PHP-nbsp-target-blank-PHP-a">			<a id="4658205654481332717" istitle="true" href="javascript:void(0);" onclick="makeDetailUrl(this, '/search/showDocDetails?', '4658205654481332717', 'ucs09', 'PHP');" target="_blank">		PHP			</a>			</h4>

回复讨论(解决方案)

\s 写成了 s

$pattern_Title =   "/target=\"\_blank\"\>.*\<\/a\>\s+\<\/h4\>/is";

其实这样写好点
$pattern_Title = "/target=\"\_blank\"\>.*\<\/a\>[\s\S]*\<\/h4\>/is";//。。。。

\s 写成了 s

$pattern_Title =   "/target=\"\_blank\"\>.*\<\/a\>\s+\<\/h4\>/is";

应该不是这个原因，得频繁的用上\s


$pattern_Title = "/target=\"\_blank\"\>\s*(\S*)\s*\<\/a\>\s*\<\/h4\>/i"; //标题
求简化高质量正则表达式- -！

其实这样写好点
$pattern_Title = "/target=\"\_blank\"\>.*\<\/a\>[\s\S]*\<\/h4\>/is";//。。。。

问一下，修饰符s用了之后，直接抓到低结束不了，比如说我想在这里结束，需要用什么来声明吗？

$s =<<< TXT<h4 id="nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-a-nbsp-id-nbsp-istitle-true-nbsp-href-javascript-void-nbsp-onclick-makeDetailUrl-this-nbsp-search-showDocDetails-nbsp-nbsp-ucs-nbsp-PHP-nbsp-target-blank-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-PHP-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-a-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp">            <a id="4658205654481332717" istitle="true" href="javascript:void(0);" onclick="makeDetailUrl(this, '/search/showDocDetails?', '4658205654481332717', 'ucs09', 'PHP');" target="_blank">         PHP            </a>             </h4>TXT;$pattern_Title = '#target="_blank">(.*)</a>\s+</h4>#is';preg_match_all($pattern_Title, $s, $r);print_r($r);

Array
(
[0] => Array
(
[0] => target="_blank">

PHP



)

[1] => Array
(
[0] =>

PHP

)

)

$pattern_Title = '#target="_blank">\s*(.*)\s*</a>#is';preg_match_all($pattern_Title, $s, $r);print_r($r);

Array
(
[0] => Array
(
[0] => target="_blank">

PHP

)

[1] => Array
(
[0] => PHP

)

)

其实这样写好点
$pattern_Title = "/target=\"\_blank\"\>.*\<\/a\>[\s\S]*\<\/h4\>/is";//。。。。

$s =<<< TXT<h4 id="nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-a-nbsp-id-nbsp-istitle-true-nbsp-href-javascript-void-nbsp-onclick-makeDetailUrl-this-nbsp-search-showDocDetails-nbsp-nbsp-ucs-nbsp-PHP-nbsp-target-blank-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-PHP-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-a-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp-nbsp">            <a id="4658205654481332717" istitle="true" href="javascript:void(0);" onclick="makeDetailUrl(this, '/search/showDocDetails?', '4658205654481332717', 'ucs09', 'PHP');" target="_blank">         PHP            </a>             </h4>TXT;$pattern_Title = '#target="_blank">(.*)</a>\s+</h4>#is';preg_match_all($pattern_Title, $s, $r);print_r($r);

Array
(
[0] => Array
(
[0] => target="_blank">

PHP



)

[1] => Array
(
[0] =>

PHP

)

)

\s 写成了 s

$pattern_Title =   "/target=\"\_blank\"\>.*\<\/a\>\s+\<\/h4\>/is";

多谢各位！