如何使用php脚本的正则表达式提取itemid=后面变量3这个值?我现在用的是PHP codepreg_match_all('/buy/sh"/> 如何使用php脚本的正则表达式提取itemid=后面变量3这个值?我现在用的是PHP codepreg_match_all('/buy/sh">

大侠进!正则表达式小语句~

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Release: 2016-06-13 10:53:14
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大侠进!求一个正则表达式小语句~~~
各位大侠~
求教一个正则表达式的提取方法:
下面这个地址

PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->http://www.daikuan.com/sell/show.php?itemid=3">
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如何使用php脚本的正则表达式提取itemid=后面变量3这个值?
我现在用的是
PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->preg_match_all('/buy\/show\.php\?itemid=([\'"]?)(\d+)\1(?-i)/', $arrContent[0], $itemidx);
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但是这个值没有提取出来。。。
这么办?

------解决方案--------------------
/http:\/\/.*?\?itemid=(\d*)/
没见到括号分组么
------解决方案--------------------
print_r($itemidx);//就知道了

echo $itemidx[1][0] ; //就是了
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