php 如何在PHP中检测字符串是否包含1个大写字母
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How to detect if string contains 1 uppercase letter in PHP
提问by Bob Cavezza
Couldn't find a function for this. I'm assuming I need to use regex?
找不到此功能。我假设我需要使用正则表达式？
I'm trying to do html redirects in php in cases where the url contains at least 1 upper case letter.
在 url 包含至少 1 个大写字母的情况下，我正在尝试在 php 中进行 html 重定向。
example: http://www.domain.com/Michael_Jordanneeds to be redirected to http://www.domain.com/michael_jordan- only problem is I can't seem to find a script to detect if at least 1 capital letter exists.
例如：http: //www.domain.com/Michael_Jordan需要重定向到http://www.domain.com/michael_jordan- 唯一的问题是我似乎无法找到一个脚本来检测是否至少有 1 个大写字母存在。
回答by RageZ
Some regular expression should be able to the work, you can use preg_matchand [A-Z]
一些正则表达式应该可以工作，你可以使用preg_match和[A-Z]
if(preg_match('/[A-Z]/', $domain)){
// There is one upper
}
回答by Tyler Eaves
if (strtolower($url) != $url){
//etc...
回答by Ateszki
You can also try this
你也可以试试这个
if (!ctype_lower($string)) {
// there is at least une uppercase character
}
not sure if this is more efficient than the other two methods proposed.
不确定这是否比提出的其他两种方法更有效。
回答by inf3rno
preg_match_all('%\p{Lu}%usD', 'aA,éá,eE,éé,iI,íí,oO,óó,??,??,uU,úú,üü,??', $m);
echo '<pre>';
var_dump($m);
echo '</pre>';
Tested with hungarian utf-8 characters, [A-Z] is for latin1 only.
使用匈牙利语 utf-8 字符进行测试，[AZ] 仅适用于 latin1。
回答by johnbessa
Here is a simpler eg:
这是一个更简单的例子：
$mydir = "C:\Users\John" ;
print preg_match('/^[A-Z]:\.*/', $mydir, $match )."\n" ;
print $match[0]. " preg match \n" ;
Produces:
产生：
1
C: preg match
This suggests that the parens are not necessary --for one match, at least
这表明括号不是必需的——至少对于一场比赛
Look at this to be more specific for your application: PHP to SEARCH the Upper+Lower Case mixed Words in the strings?
看看这个更适合您的应用程序：PHP to SEARCH the Upper+Lower Case Mixed Words in the strings?
