在 PHP 中删除两个或多个字符串文本之间的重复单词

Question

Words:

$word_1 = "My Subject Test Words Are Here"
$word_2 = "My Subject Different Word is there"
$word_3 = "My Subject Other Word is there"

In this words i want to remove "My Subject", the end of the day words should replaced like:

$word_1 = "Test Words Are Here"
$word_2 = "Different Word is there"
$word_3 = "Other Word is there"

My subject can be dynamically change it can be three word or four word.

Is it possible to remove first duplicated words from string?

Thank you.

Answer 1

You could find the duplicate words by splitting it by space and convert into array then you can find the first match duplicate words

$words = [
  "My Subject Test Words Are Here",
  "My Subject Different Word is there",
  "My Subject Other Word is there"
];

$wordSplits = array_map(function($word) {
  return preg_split('/\s+/', $word, -1, PREG_SPLIT_NO_EMPTY);
},$words);

$removeDuplicates = array_map(function($word) use($wordSplits) {
  return trim(str_replace(
    array_intersect(array_shift($wordSplits),...$wordSplits),
    '',
    $word
  ));
},$words);

var_dump($removeDuplicates);

Results:

array(3) {
  [0]=>
  string(19) "Test Words Are Here"
  [1]=>
  string(23) "Different Word is there"
  [2]=>
  string(13) "Other Word is there"
}

Answer 2

使用str_replace或mb_str_replace （对于多字节字符串，例如包含非拉丁符号）。

$result = str_replace('My Subject', '', $originString);