更新:
感谢Hakre和Martino的回答: 该函数现在工作得更好了:
$queryString = $_SERVER['QUERY_STRING'];
parse_str($queryString, $params);
foreach ($params as $key => $term)
{
$tags = explode(' ',$term);
$tagCount = count($tags);
//If there is more than one term per key, break them up
if($tagCount > 1) {
foreach($tags as $tag) {
if($term != '') {
//remove individual term from query string and remove any redundant characters
$urlx = str_replace($tag, '', $queryString);
$urlx = str_replace(array('=+', '++', '+&'), array('=', '+', '&'), $urlx);
if(substr($urlx, -1) == '+'){
$urlx = substr($urlx,0,-1);
}
echo '<a href="?'.$urlx.'">'.$tag.'</a><br/>';
}
}
} else {
//If there's just one term per key get rid of the key/term pair
$these = array_diff_assoc($params, array($key => $term));
printf("<a href='"?%s'">%s</a><br>'n", http_build_query($these), $term);
}
}
如果有人对使这个片段更好有任何进一步的建议,我将不胜感激!
谢谢
原始问题
我正在尝试创建一个允许用户"X out"或清除给定搜索过滤器的函数。我编写了一个函数(以一种非常黑客的方式(,它从每个GET变量中获取键,然后创建一个url,该网址将从搜索字符串中删除该键。
有没有人有更好或更优雅的方式来写这个?
谢谢
<?php
$queryString = $_SERVER['QUERY_STRING'];
$getArray = explode("=", $queryString);
foreach($getArray as $get) {
$tagArray = explode("+",$get);
foreach($tagArray as $tag){
$pos = strpos($tag,'=');
if($pos === false) {
$urlx = str_replace($tag, '', $queryString);
$urlx = str_replace('=+','=',$urlx);
$urlx = str_replace('++','+',$urlx);
$urlx = str_replace('+&','&',$urlx);
echo '<a href="?'.$urlx.'">'.$tag.'</a><br/>';
}
else {
$term = explode('=',$tag);
$urlx = str_replace($term[1], '', $queryString);
$urlx = str_replace('=+','=',$urlx);
$urlx = str_replace('++','+',$urlx);
$urlx = str_replace('+&','&',$urlx);
echo '<a href="?'.$urlx.'">'.$term[1].'</a><br/>';
}
}
}
?>
示例输出如下:
查询字符串: ?style=automotive&type=commercial+residential
网页输出:
<a href="?type=commercial+residential">automotive</a><br/>
<a href="?style=automotive&type=residential">commercial</a><br/>
<a href="?style=automotive&type=commercial">residential</a><br/>
PHP 内置了函数来解决您的问题,一个用于解析查询字符串,另一个用于再次编译: parse_str
和http_build_query
:
parse_str($queryString, $params);
foreach ($params as $key => $term)
{
$these = array_diff_assoc($params, array($key => $term));
printf("<a href='"?%s'">%s</a><br>'n", http_build_query($these), $term);
}
示例输出:
<a href="?b=b&c=c">a</a><br>
<a href="?a=a&c=c">b</a><br>
<a href="?a=a&b=b">c</a><br>
演示
你可以肯定做的一件事是利用str_replace
函数接受数组:
$urlx = str_replace('=+','=',$urlx);
$urlx = str_replace('++','+',$urlx);
$urlx = str_replace('+&','&',$urlx);
成为
$urlx = str_replace(array('=+', '++', '+&'), array('=', '+', '&'), $urlx);
else
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