Question

我有来自我的数组的字符串，如。

$a="Root|Electronics|Categories|Mobiles & Accessories|Smartphones & Basic Mobiles|Smartphones|";

$b="Root|Electronics|Categories|Mobiles & Accessories|Smartphones & Basic Mobiles|Smartphones & Mobiles";

$c="Root|Electronics|Categories|Mobiles & Accessories|Smartphones & Basic Mobiles|Smart Android mobile";

在这种情况下，我正在尝试从数组中找到一个公共匹配，并且此字符串将替换为不同的字符串。

例如：Root|Electronics|Categories|Mobiles & Accessories|Smartphones & Basic Mobiles%是第一个常见的匹配字符串，我会用Mobiles之类的其他字符串替换它。

要做到这一点，我可以使用哪个php函数，或者你可以建议其他方式吗？

谢谢！

Answer 1

要查找公共部分，您可以使用此处的功能：

https://gist.github.com/chrisbloom7/1021218

您需要将字符串添加到数组中，然后将此代码与示例一起使用：

<?php
function longest_common_substring($words)
{
  $words = array_map('strtolower', array_map('trim', $words));
  $sort_by_strlen = create_function('$a, $b', 'if (strlen($a) == strlen($b)) { return strcmp($a, $b); } return (strlen($a) < strlen($b)) ? -1 : 1;');
  usort($words, $sort_by_strlen);
  // We have to assume that each string has something in common with the first
  // string (post sort), we just need to figure out what the longest common
  // string is. If any string DOES NOT have something in common with the first
  // string, return false.
  $longest_common_substring = array();
  $shortest_string = str_split(array_shift($words));
  while (sizeof($shortest_string)) {
    array_unshift($longest_common_substring, '');
    foreach ($shortest_string as $ci => $char) {
      foreach ($words as $wi => $word) {
        if (!strstr($word, $longest_common_substring[0] . $char)) {
          // No match
          break 2;
        } // if
      } // foreach
      // we found the current char in each word, so add it to the first longest_common_substring element,
      // then start checking again using the next char as well
      $longest_common_substring[0].= $char;
    } // foreach
    // We've finished looping through the entire shortest_string.
    // Remove the first char and start all over. Do this until there are no more
    // chars to search on.
    array_shift($shortest_string);
  }
  // If we made it here then we've run through everything
  usort($longest_common_substring, $sort_by_strlen);
  return array_pop($longest_common_substring);
}

用法：

$array = array(
  'PTT757LP4',
  'PTT757A',
  'PCT757B',
  'PCT757LP4EV'
);
echo longest_common_substring($array);
// => T757

如何用字符串中的其他单词替换单词

1 个答案: