dongxie3352 2018-05-31 16:27
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为什么这个preg_match会评估空格?

i have this preg_match, but i can't understand why, it is evaluating for spaces:

preg_match('/[\'^\"^\0-9^£$%&*()!·¢∞&÷“≠´}{@#~?><>,|=_+¬-]/'

i want to verify if there is any of those characters but allowing the spaces, sorry i am no so good with regex, i know that the space in regex is \s, thank you in advance.

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  • dongtun1683 2018-05-31 16:39
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    The \0-9 is not making a range of numbers. Use \d or 0-9, without the backslash. You also don't need to escape the double quote, and you only need to list each character once, > and ^ were listed more than once. If you were trying to pair them with the preceding character that won't work. You could use an optional grouping for that (this|that). Every character in a character class is individual with the exception of ranges (and because of that be careful with the -).

    This should function as you expect your current regex to:

    [\'^"0-9£$%&*()!·¢∞&÷“≠´}{@#~?<>,|=_+¬-]
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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