一个正则表达式的问题

第二场雪

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1^# 第二场雪发表于 2007-10-09 13:00

一个正则表达式的问题

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CODE:

$_=$myecho;
s/<div\s*class=\"editor_text\">(.*?)<\/div>/$1/;
print $_;

想找出页面里的这个html标记里的内容
怎么实验都不行

$myecho内容为

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CODE:

<td class="editor_colornormal" onClick="discuzcode('forecolor', 'PaleTurquoise')
" unselectable="on" onMouseOver="colorContext(this, 'mouseover')" onMouseOut="co
lorContext(this, 'mouseout')"><div style="background-color: PaleTurquoise" unsel
ectable="on"></div></td>
<td class="editor_colornormal" onClick="discuzcode('forecolor', 'LightBlue')" un
selectable="on" onMouseOver="colorContext(this, 'mouseover')" onMouseOut="colorC
ontext(this, 'mouseout')"><div style="background-color: LightBlue" unselectable=
"on"></div></td>
<td class="editor_colornormal" onClick="discuzcode('forecolor', 'Plum')" unselec
table="on" onMouseOver="colorContext(this, 'mouseover')" onMouseOut="colorContex
t(this, 'mouseout')"><div style="background-color: Plum" unselectable="on"></div
></td>
<td class="editor_colornormal" onClick="discuzcode('forecolor', 'White')" unsele
ctable="on" onMouseOver="colorContext(this, 'mouseover')" onMouseOut="colorConte
xt(this, 'mouseout')"><div style="background-color: White" unselectable="on"></d
iv></td>
</tr><tr>
<div class="editor_text">
<textarea name="message" rows="10" cols="60" style="width:99%; height:250px;font
-size:14px;font-family:Arial;padding:5px;" id="posteditor_textarea" onSelect="ja
vascript: storeCaret(this);" onClick="javascript: storeCaret(this);" onKeyUp="ja
vascript:storeCaret(this);" onKeyDown="ctlent(event);" tabindex="100"></br>
-------- Forwarded Messages --------</br>
</br>
</br><div><blockquote style="border-left: 1px solid rgb(204, 204, 204); margin:
0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
From: "test" [email]test@extmail.org[/email] </br>
To: [email]testyou@111.com[/email] </br>
</br>

HOME = /home/domains/extmail.org/test<br>loginTime = 1192118532<br>OPTIONS = <br
>mailQuota = 5242880S<br>IPaddr = 192.168.1.2<br>Nosameip = 1<br>User = test@ext
mail.org<br>MAILDIR = /home/domains/extmail.org/test/Maildir/

</blockquote></div></br>

</textarea></div>

kamixp

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2^# kamixp 发表于 2007-10-09 13:15

s///是替换用的，你要找出这个标记不行
你用

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CODE:

/<div\s*class=\"editor_text\">(.*?)<\/div>/ and print $1;

不过结果还不是你要的，结果大概是

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CODE:

<textarea name="message" rows="10" cols="60" style="width:99%; height:250px;font
-size:14px;font-family:Arial;padding:5px;" id="posteditor_textarea" onSelect="ja
vascript: storeCaret(this);" onClick="javascript: storeCaret(this);" onKeyUp="ja
vascript:storeCaret(this);" onKeyDown="ctlent(event);" tabindex="100"></br>
-------- Forwarded Messages --------</br>
</br>
</br><div><blockquote style="border-left: 1px solid rgb(204, 204, 204); margin:
0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
From: "test" [email]test@extmail.org[/email] </br>
To: [email]testyou@111.com[/email] </br>
</br>

HOME = /home/domains/extmail.org/test<br>loginTime = 1192118532<br>OPTIONS = <br
>mailQuota = 5242880S<br>IPaddr = 192.168.1.2<br>Nosameip = 1<br>User = test@ext
mail.org<br>MAILDIR = /home/domains/extmail.org/test/Maildir/

</blockquote></div></br>

</textarea>

因为正则表达式是贪婪的，你还得改下匹配模式，进行最小匹配

bood

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3^# bood 发表于 2007-10-09 13:16

可能是因为有换行把，"."一般情况下是不匹配换行的，需要加上s修饰符
s/<div\s*class=\"editor_text\">(.*?)<\/div>/$1/s;

第二场雪

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4^# 第二场雪发表于 2007-10-09 13:25

谢谢楼上2位,解决啦~~~

的确是需要作为单行处理就是s修饰,另外就是贪婪模式

非常感谢