String PHP从字符串中删除一个单词（不是字符）

下面代码的问题是，它从字符串中删除了字符，而不是单词

<?php
    $str = "In a minute, remove all of the corks from these bottles in the cellar";

    $useless_words = array("the", "of", "or", "in", "a");

    $newstr = str_replace($useless_words, "", $str);

   //OUTPUT OF ABOVE:  "In mute, remove ll   cks from se bottles   cellr"
?>

我需要输出为：分钟，从酒窖中取出所有瓶塞

我假设我不能使用

str\u replace（）

。我能做些什么来实现这一点

.

将完成以下工作：

$str = "The game start in a minute, remove all of the corks from these bottles in the cellar";
$useless_words = array("the", "of", "or", "in", "a");
$pattern = '/\h+(?:' . implode($useless_words, '|') . ')\b/i';
$newstr = preg_replace($pattern, "", $str);
echo $newstr,"\n";

输出：

The game start minute, remove all corks from these bottles cellar

说明：

The game start minute, remove all corks from these bottles cellar

该模式如下所示：

/\h+（？：of或a中的）b/i

/                   : regex delimiter
  \h+               : 1 or more horizontal spaces
  (?:               : start non capture group
    the|of|or|in|a  : alternatives for all the useless words
  )                 : end group
  \b                : word boundary, make sure we don't have a word character before
/i                  : regex delimiter, case insensitive

将完成以下工作：

$str = "The game start in a minute, remove all of the corks from these bottles in the cellar";
$useless_words = array("the", "of", "or", "in", "a");
$pattern = '/\h+(?:' . implode($useless_words, '|') . ')\b/i';
$newstr = preg_replace($pattern, "", $str);
echo $newstr,"\n";

输出：

The game start minute, remove all corks from these bottles cellar

说明：

The game start minute, remove all corks from these bottles cellar

该模式如下所示：

/\h+（？：of或a中的）b/i

/                   : regex delimiter
  \h+               : 1 or more horizontal spaces
  (?:               : start non capture group
    the|of|or|in|a  : alternatives for all the useless words
  )                 : end group
  \b                : word boundary, make sure we don't have a word character before
/i                  : regex delimiter, case insensitive

---

这适用于这个特定的字符串，但是如果需要计算一个新的字符串，并且该字符串以“the”开头，那么该单词将不会被删除。但这很有帮助。更新答案以涵盖字符串中的第一个单词这适用于此特定字符串，但如果需要计算新字符串，且字符串以“the”开头，则不会删除该单词。但这很有帮助。更新了答案以涵盖字符串中的第一个单词