douliudong8108 2016-09-29 06:01
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正则表达式用两个大写字母替换任何单词

I want to replace any word which contains two capital letters .

here is my string

jennie-garth-jennie-garth-inner-city-arts-gala-october-17-2012-If9aSpTW
jennie-garth-jennie-garth3892-H9rDcbY 

i want to replace -If9aSpTW with -

These -If9aSpTW varies so I can't use str_replace. I can identify with only two capital letter in one word. These words are at the end, but these types of words are appearing for 20% of total database values so I can't replace all last words.

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  • doutiao2540 2016-09-29 06:13
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    The str_replace is context unaware, nor can you use substr since you need to check for 2 uppercase letters in the last non-hyphen chunk of the text. So you really have to stick to preg_replace regex based replacement.

    You may use the following regex:

    preg_replace('/-(?:[^-]*[A-Z]){2,}[^-]*$/', '', $str);
    

    See the regex demo.

    The pattern matches:

    • - - a hyphen
    • (?:[^-]*[A-Z]){2,} - 2 or more occurrences (due to {2,} limiting quantifier) of a sequence of:
      • [^-]*
      • [A-Z] - an uppercase
    • [^-]* - zero or more chars other than -
    • $ - end of string

    PHP:

    $str = 'jennie-garth-jennie-garth-inner-city-arts-gala-october-17-2012-If9aSpTWe';
    echo preg_replace('/-(?:[^-]*[A-Z]){2,}[^-]*$/', '', $str);
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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