PHP删除内容中的部分URL

我有一个字符串，其中包含不同数量的Url。我想删除每个Url的“？category_id=x”部分。x将是一个不断变化的数字

var old_string = "some text <a href='/platforms/item/something?category_id=x'>some text</a> some more text <a href='/platforms/item/something?category_id=x'>some text</a>..." 

var new_string = "some text <a href='/platforms/item/something'>some text</a> some more text <a href='/platforms/item/something'>some text</a>...." 

var old\u string=“一些文本更多文本…”
var new_string=“一些文本更多文本…”

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我怎样才能做到这一点。Regex？

有一个parse_url函数，允许分离url字符串的组件

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来源：-

如果您已经从字符串中提取了url，那么使用parse\u url的答案是最好的。 我想你没有

<?php
$old_string = "some text <a href='/platforms/item/something?category_id=x'>some text</a> some more text <a href='/platforms/item/something?category_id=x'>some text</a>...";

// if you know there won't be any other url parameters:
$new_string = preg_replace('!\?category_id=(x|\d+)!','', $old_string );

// otherwise, remove query string from all URLs:
$new_string = preg_replace('!(href=(?:\'|")[^\?\'"]+)\?[^\'"#]*!','\1', $old_string );

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检查此代码不是PHP。它看起来像JavaScript
array(3) {
  ["host"]=>
  string(15) "www.example.com"
  ["path"]=>
  string(5) "/path"
  ["query"]=>
  string(17) "googleguy=googley"
}

<?php
$old_string = "some text <a href='/platforms/item/something?category_id=x'>some text</a> some more text <a href='/platforms/item/something?category_id=x'>some text</a>...";

// if you know there won't be any other url parameters:
$new_string = preg_replace('!\?category_id=(x|\d+)!','', $old_string );

// otherwise, remove query string from all URLs:
$new_string = preg_replace('!(href=(?:\'|")[^\?\'"]+)\?[^\'"#]*!','\1', $old_string );

old_string.replace( /(href=(?:"|')[^\?'"]+)\?[^'"#]*/g, '$1' );

<?php
 $old_string  = "some text <a href='/platforms/item/something?category_id=x'>some text</a>  some more text <a href='/platforms/item/something?category_id=x'>some text</a>...";
 preg_match( '/<a href=\'(.*?)\'>/', $old_string, $match );
 $url         = parse_url($match[1]) ;
 $new_string  = "some text <a href='".$url["host"].$url["path"];
 $new_string .= "'>some text</a> some more text <a href='/platforms/item/something?    category_id=x'>some text</a>...";
 echo htmlentities($new_string);
//output
// some text <a href='/platforms/item/something'>some text</a> some more text <a  href='/platforms/item/something?category_id=x'>some text</a>...
?>