正则表达式，不含空格或特殊字符[关闭]

Question

I am new to regular expressions and I need a regex for php username that matches

no spaces

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no special characters

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in length 8, max 32

and also a regex for password that matches

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alphanumeric have at least one digit and one character

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no spaces

Answer 1

Try the following REGEX :

^\S+\w{8,32}\S{1,}

• ^ means beginning of line
• \S means all characters but not a space or a tab
• + mean at least one character
• \w means an alphanumeric character including _
• {8,32} means at least 8 characters, and max 32
• \S still means all characters but not a space or a tab
• {1,} means at least 1 item