PHP函数删除字符串中某些字符之间的所有字符 [英] PHP function to delete all between certain character(s) in string

问题描述

我对function delete_all_between($char1, $char2, $string)感兴趣 会在给定的$ string中搜索$ char1和$ char2，如果找到，则从这两个字符之间的子字符串中清除$ string，其中包括 $ char1和$ char2本身.

I'm interested in function delete_all_between($char1, $char2, $string) that will search given $string for $char1 and $char2 and, if such has been found, clear $string from substring between these two characters, including $char1 and $char2 itself.

示例:

$string = 'Some valid and <script>some invalid</script> text!';
delete_all_between('<script>', '</script>', $string);

现在，$ string应该只包含

Now, $string should contain just

'Some valid and  text'; //note two spaces between 'and  text'

有人可以快速解决吗?

推荐答案

<?php

$string = 'Some valid and <script>some invalid</script> text!';
$out = delete_all_between('<script>', '</script>', $string);
print($out);

function delete_all_between($beginning, $end, $string) {
  $beginningPos = strpos($string, $beginning);
  $endPos = strpos($string, $end);
  if ($beginningPos === false || $endPos === false) {
    return $string;
  }

  $textToDelete = substr($string, $beginningPos, ($endPos + strlen($end)) - $beginningPos);

  return delete_all_between($beginning, $end, str_replace($textToDelete, '', $string)); // recursion to ensure all occurrences are replaced
}

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