{"id":237,"title":"preg_replace * preg_filter * preg_grep * preg_split * preg_q","good":0,"bad":0,"hit":2110,"created_at":"2016-05-22 02:05:22","content":"<p>&lt;?php<br\/>\/*<br\/> * \u6b63\u5219\u8868\u8fbe\u5f0f<br\/> * preg_replace<br\/> * preg_filter<br\/> * preg_grep<br\/> * preg_split<br\/> * preg_quote<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 $var;<br\/> &nbsp; &nbsp;}<br\/> &nbsp; &nbsp;echo &#39;&lt;br\/&gt;&#39;;<br\/>}<br\/><br\/><br\/>$subject=array(&#39;www5&#39;,&#39;12hurong&#39;,&#39;com3s4&#39;,&#39;sf23sdf59&#39;);<br\/>$pattern=array(&#39;\/[12]\/&#39;,&#39;\/[34]\/&#39;,&#39;\/[59]\/&#39;);\/\/12-&gt;\u53e4 34-&gt;\u6708 59-&gt;\u706b<br\/>$replacement=array(&#39;\u53e4&#39;,&#39;\u6708&#39;,&#39;\u706b&#39;);<br\/>$result1=preg_replace($pattern,$replacement,$subject);\/\/\u6ca1\u5339\u914d\u5230\u7684\u7ed3\u679c\u4e5f\u4f1a\u4fdd\u7559<br\/>$result2=preg_filter($pattern,$replacement,$subject);\/\/\u53ea\u4fdd\u5b58\u5339\u914d\u5230\u7684\u7ed3\u679c<br\/>$result3=preg_grep(&#39;\/[0-9]\/&#39;,$subject);\/\/\u8fd4\u56de\u5339\u914d\u6a21\u5f0f\u7684\u6570\u7ec4\u6761\u76ee<br\/>$result4=preg_split(&#39;\/[0-9]\/&#39;,&#39;www3hu2rong.com&#39;);\/\/\u7528\u6b63\u5219\u5206\u9694\uff0c\u7c7b\u4f3cexplode\u7684\u529f\u80fd\uff0c\u529f\u80fd\u66f4\u5f3a\u5927<br\/>$result5=preg_quote(&#39;df2{dsf,}&#39;);\/\/\u8f6c\u4e49\u6b63\u5219\u8868\u8fbe\u5f0f\u7279\u6b8a\u5b57\u7b26\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u7279\u6b8a\u5b57\u7b26\u6709\uff1a . \\ + * ? [ ^ ] $ ( ) { } = ! &lt; &gt; | : -<br\/>show($result1);<br\/>show($result2);<br\/>show($result3);<br\/>show($result4);<br\/>show($result5);<br\/>\/*<br\/> * \u8fd0\u884c\u7ed3\u679c<br\/>Array<br\/>(<br\/> &nbsp; &nbsp;[0] =&gt; www\u706b<br\/> &nbsp; &nbsp;[1] =&gt; \u53e4\u53e4hurong<br\/> &nbsp; &nbsp;[2] =&gt; com\u6708s\u6708<br\/> &nbsp; &nbsp;[3] =&gt; sf\u53e4\u6708sdf\u706b\u706b<br\/>)<br\/>Array<br\/>(<br\/> &nbsp; &nbsp;[0] =&gt; www\u706b<br\/> &nbsp; &nbsp;[1] =&gt; \u53e4\u53e4hurong<br\/> &nbsp; &nbsp;[2] =&gt; com\u6708s\u6708<br\/> &nbsp; &nbsp;[3] =&gt; sf\u53e4\u6708sdf\u706b\u706b<br\/>)<br\/>Array<br\/>(<br\/> &nbsp; &nbsp;[0] =&gt; www5<br\/> &nbsp; &nbsp;[1] =&gt; 12hurong<br\/> &nbsp; &nbsp;[2] =&gt; com3s4<br\/> &nbsp; &nbsp;[3] =&gt; sf23sdf59<br\/>)<br\/><br\/> *\/<\/p>"}