php -- 正则替换

最新推荐文章于 2025-09-12 18:43:55 发布

weixin_30852419

最新推荐文章于 2025-09-12 18:43:55 发布

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文章标签： php

原文链接：http://www.cnblogs.com/baijifeilong/p/3750426.html

----- 019-regex_replace.php -----

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta http-equiv="content-type" content="text/html; charset=utf-8">
 5     <title>Regex-Replace</title>
 6 </head>
 7 <body>
 8 <h1>Regex-Replace</h1>
 9 <pre style="font-family:微软雅黑; font-size:13pt">
10 <?php
11     $str = "喜羊羊灰太狼懒羊羊红太狼";
12     echo '替换字符串 "<b>喜羊羊灰太狼懒羊羊红太狼</b>"', "\n\n";
13 
14     $result = preg_replace("/...羊羊/", " 樱桃小丸子 ", $str);
15     echo "羊->丸子：", $result, "\n";
16 
17     $result = preg_replace("/...羊羊/", " 樱桃小丸子 ", $str, 1);
18     echo "羊->丸子 一次：", $result, "\n";
19 
20     $result = preg_replace(array("/.{3}羊羊/", "/.{6}狼/"), array("羊", "狼"), $str);
21     echo "羊与狼：", $result, "\n";
22 
23     $result = preg_replace_callback("/.../", "translate", $str, 11);
24     echo "翻译前11个字符：", $result, "\n";
25 
26 
27     $str = "熊大熊二";
28     echo "<b>\n切割字符串</b>\n";
29     $result = preg_split("/熊/", $str);
30     echo "熊切割后：\n";
31     var_export($result);
32     $result = preg_split("/熊/", $str, -1, PREG_SPLIT_NO_EMPTY);
33     echo "\n熊切割后忽略空白：\n";
34     var_export($result);
35 
36     echo "<b>\n\n获取正则表达式</b>\n";
37     $str = "<img src= >!!!";
38     echo "获取正则表达式";
39     echo "忽略大小写：", @sql_regcase($str), "\n";
40     $str = "<img src= >!!";
41     echo "转义&lt;img src= &gt;!!  ", preg_quote('<img src= >!!'), "\n";
42     echo "转义>img src= >!!  ", preg_quote(">img src= >!!"), "\n";
43 ?>
44 <?php
45     function translate($src)
46     {
47         $maps = array("喜"=>"Happy", "羊"=>"Sheep", "灰"=>"Gray", "太"=>"Too", "狼"=>"Wolf", "懒"=>"Lazy", "红"=>"Red");
48         return $maps[$src[0]]." ";
49     }
50 ?>
51 </pre>
52 </body>
53 </html>