I need to validate a username in PHP. It can be:
我需要在PHP中验证用户名。它可以是:
- Letters (upper and lower case)
- 字母(大小写)
- Numbers
- 数字
- Any of these symbols :.,?!@
- 这些符号中的任何一个:…?!@
- Up to 15 characters OR 16 if the last character is one of the following #$^ (it can also be 15 or less with one of these 3 characters at the end only)
- 15字符或16以下如果最后一个字符是一个# $ ^ 15或更少(也可以用一个最后3个字符)
How do I do this?
我该怎么做呢?
1 个解决方案
#1
4
Start with this:
从这开始:
/^[a-zA-Z0-9:.,?!@]{3,15}[#$^]?$/
then refine it to your needs. Try to see if you need escaping of the special char, but you should get the idea.
然后根据您的需要进行改进。试着看看你是否需要转义这个特殊的字符，但是你应该明白它的意思。
This means: from a to z, from A to Z, from 0 to 9 and :.,?!@ repeated from 3 to 15 times, optionally followed by one among #$^
这意味着:从a到z，从a到z，从0到9和:，?!@重复3到15倍,有选择地之一# $ ^紧随其后
#1
4
Start with this:
从这开始:
/^[a-zA-Z0-9:.,?!@]{3,15}[#$^]?$/
then refine it to your needs. Try to see if you need escaping of the special char, but you should get the idea.
然后根据您的需要进行改进。试着看看你是否需要转义这个特殊的字符，但是你应该明白它的意思。
This means: from a to z, from A to Z, from 0 to 9 and :.,?!@ repeated from 3 to 15 times, optionally followed by one among #$^
这意味着:从a到z，从a到z，从0到9和:，?!@重复3到15倍,有选择地之一# $ ^紧随其后