I tried this:
echo preg_replace('/[^,,$]/', '', ',test,hi,');
But gets:
,,,
如何删除PHP中字符串开头/结尾的可能点？
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3条回答 默认 最新
- douzhi7082 2010-07-01 08:48关注
Do you mean
preg_replace('/^,|,$/', '', ',test,hi,');? Inside a character class
[…], a leading^means negation, and$doesn't have any special meanings.You could use the
trimfunction instead.trim(',test,hi,', ',');本回答被题主选为最佳回答 , 对您是否有帮助呢?解决 无用评论 打赏举报 分享
- 2010-07-01 08:45回答 3 已采纳 Do you mean preg_replace('/^,|,$/', '', ',test,hi,'); ? Inside a character class […], a leading
- 2017-09-24 08:39回答 4 已采纳 I assume you want to get the URL. I would use regex to get the url out of it. The regex would be h
- 2011-11-26 12:21回答 3 已采纳 You need to escape the / inside the regex because / is also being used as delimiter: if (preg_mat
- 2020-10-21 23:32主要介绍了PHP针对字符串开头和结尾的判断方法,涉及php字符串操作的判断、截取、判断、比较等函数用法与注意事项,需要的朋友可以参考下
- 2015-01-24 18:41回答 4 已采纳 You could use preg_replace and a regular expression like this. $s = '<br><br /><Br
- 2015-06-10 03:12回答 1 已采纳 You don't really need a regex for this; you can just use trim(), as in trim($string, "'"). If you
- 2010-10-28 10:02回答 5 已采纳 I would use parse_url() to cleanly extract the path component from the URL: $path = parse_URL("ht
- 2021-03-24 09:20Franklin Zheng的博客 1、知识准备// 计算字符串长度echo strlen("hello") . PHP_EOL;// 5// 截取字符串echo substr("hello world!", 6, 5) . PHP_EOL;// world// 查找子串起始位置echo ...// 62、字符串开头结尾判断//变量：$s1 = "hello...
- 2016-02-18 11:11回答 2 已采纳 Just check first and last character instead of searching for " in the whole string: if ($owner_te
- 2012-09-20 20:22回答 3 已采纳 \d{9}(?:\d|X) This is 9 digits followed by either a digit or 'X'.
- 2010-08-09 13:50回答 3 已采纳 Just use trim and supply all characters you want to strip as the second parameter. In your case:
- 2021-04-11 10:56小鹿梨的博客 本文实例讲述了PHP针对字符串开头和结尾的判断方法。分享给大家供大家参考，具体如下：//变量：$s1 = "dotcoo world!";$s2 = "dotcoo";$s3 = "hello dotcoo";//php判断字符串开头：var_dump(substr($s1, 0, strlen($...
- 2014-03-22 06:11回答 2 已采纳 You can use $rs = mysql_query("SELECT * FROM tbcoordenadas where trim(titulo)='$id'");
- 2021-03-23 17:53燕家猫的博客 这篇文章主要介绍了PHP针对字符串开头和结尾的判断方法,涉及php字符串操作的判断、截取、判断、比较等函数用法与注意事项,需要的朋友可以参考下//变量：$s1 = "dotcoo world!";$s2 = "dotcoo";$s3 = "hello dotcoo";...
- 2020-01-14 10:22彭世瑜的博客 1、知识准备 // 计算字符串长度 echo strlen("hello") . PHP_EOL; // 5 // 截取字符串 echo substr("hello world!", 6, 5) . PHP_EOL; // world ...", "world"). PHP_EOL;...2、字符串开头结尾判断 //变...
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