doumu5934
doumu5934
2019-02-06 17:59
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PHP substr - 从字符串中提取数字

I need to extract the highlighted numbers from each line in a CSV file.

Currently I am looping though the lines & splitting the line on the / character as this only appears once in each row, but how do I remove everything around these numbers so I am left with:

9/10

10/11

11/12

...

enter image description here

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1条回答 默认 最新

  • douchuoliu4422
    douchuoliu4422 2019-02-06 18:07
    已采纳

    If you want to only get the numbers, you could do a preg_match

    $re = '/(\d+\/\d+)/s';
    $str = 'dfsadsfadsfads~~9/10~~lfkjdskfds';
    
    preg_match($re, $str, $matches);
    

    but if you are able to get the entire doc as a single string, you could do a preg_match_all

    $re = '/(\d+\/\d+)/s';
    $str = 'dfsadsfadsfads~~9/10~~lfkjdskfds
    dfsadsfadsfads~~9/10~~lfkjdskfds
    ';
    
    preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
    

    then loop on the $matches

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