{"id":236,"title":"preg_match\u548cpreg_match_all","good":0,"bad":0,"hit":2015,"created_at":"2016-05-22 02:04:19","content":"<p>&lt;?php<br\/>\/**<br\/> * \u6b63\u5219\u8868\u8fbe\u5f0f<br\/> * preg_match<br\/> * preg_match_all<br\/> *\/<br\/><br\/>function show($var){<br\/> &nbsp; &nbsp;if(empty($var)){<br\/> &nbsp; &nbsp; &nbsp; &nbsp;echo &#39;null&#39;;<br\/> &nbsp; &nbsp;}else if(is_array($var) || is_object($var)){<br\/> &nbsp; &nbsp; &nbsp; &nbsp;echo &#39;&lt;pre&gt;&#39;;<br\/> &nbsp; &nbsp; &nbsp; &nbsp;print_r($var);<br\/> &nbsp; &nbsp; &nbsp; &nbsp;echo &#39;&lt;\/pre&gt;&#39;;<br\/> &nbsp; &nbsp;}else{<br\/> &nbsp; &nbsp; &nbsp; &nbsp;echo $var;<br\/> &nbsp; &nbsp;}<br\/> &nbsp; &nbsp;echo &#39;&lt;br\/&gt;&#39;;<br\/>}<br\/><br\/>$subject=&#39;www.12hurong.com3s4&#39;;\/\/\u641c\u7d22\u7684\u5bf9\u8c61<br\/>$pattern=&#39;\/[0-9]\/&#39;;\/\/\u5339\u914d\u89c4\u5219<br\/>$arr1 = $arr2 = array();\/\/\u7528\u4e8e\u5b58\u653e\u5339\u914d\u7684\u7ed3\u679c<br\/>$r1=preg_match($pattern,$subject,$arr1);<br\/>$r2=preg_match_all($pattern,$subject,$arr2);<br\/>show($arr1);<br\/>show($arr2);<br\/>show($r1);\/\/\u5339\u914d\u7684\u4e2a\u6570 1<br\/>show($r2);\/\/\u5339\u914d\u7684\u4e2a\u6570 4<br\/>\/*<br\/><br\/>\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<br\/>Array<br\/>(<br\/> &nbsp; &nbsp;[0] =&gt; 1<br\/>)<br\/>Array<br\/>(<br\/> &nbsp; &nbsp;[0] =&gt; Array<br\/> &nbsp; &nbsp; &nbsp; &nbsp;(<br\/> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[0] =&gt; 1<br\/> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[1] =&gt; 2<br\/> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[2] =&gt; 3<br\/> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[3] =&gt; 4<br\/> &nbsp; &nbsp; &nbsp; &nbsp;)<br\/><br\/>)<br\/>1<br\/>4<br\/> *\/<br\/><br\/><\/p>"}