Question

我必须删除字符串中的最后一个元素。我在rtrim中使用了php，但它无效。

这是字符串：

 /search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100&make_order=ASC

我需要删除“＆amp; make_order = ASC”

任何人都可以帮助我吗？

Answer 1

$s = '/search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100&make_order=ASC';
echo substr($s, 0, strrpos($s, '&'));

编辑：

$url = $base_url.trim( $_SERVER['REQUEST_URI'], "&year_order=".$arr['year_order']."" );
//                                            ^
//                                            |_ replace , with .

Answer 2

修剪应该有效：

$string = "/search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100&make_order=ASC";
$string = trim($string, "&make_order=ASC");

Answer 3

无法保证make_order将位于查询字符串的末尾 - 或者根本不存在。要正确删除字段，您必须使用以下内容：

$url = '/search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100&make_order=ASC';

// break down the URL into a path and query string
$parsed = parse_url($url);

// turn the query string into an array that we can manipulate
$qs = array();
parse_str($parsed['query'], $qs);

// remove the unwanted field
unset($qs['make_order']);

// rebuild the URL
$rebuilt = $parsed['path'];
if(!empty($qs)) {
    $rebuilt .= '?' . http_build_query($qs);
}

echo $rebuilt;

Answer 4

$actual_link = "/search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100&make_order=ASC";


echo str_replace("&make_order=ASC","",$actual_link);

Answer 5

$string = "/search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100&make_order=ASC";

$args = array_pop(explode($string, "&"));

$string = implode("&", $args);

Answer 6

有很多方法。最简单的可能是：

$i=strrpos($text,'&');
$newstring=substr($text,0,$i);

Answer 7

$str = "/search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100&make_order=ASC";
echo $str . "<br>";
echo trim($str,"&make_order=ASC");

Answer 8

如果&make_order=ASC总是在最后，您可以使用strstr()来执行此操作

$str = '/search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100&make_order=ASC';
echo strstr($str,'&make_order=ASC',true);

Answer 9

从网址中删除所需的密钥。

使用：

$s = '/search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100&make_order=ASC';
echo remove_key_from_url($url, 'make_order');

输出：

/search/listing.html?vehicle_type=&year=&make_name=&model_name=&loc_type=3&zipcode=641004&distance=100

代码：

function remove_key_from_url($url, $key) {
    if (strpos($url, '?') === false) return $url;
    list($left, $right) = explode('?', $url, 2);
    parse_str($right, $get);
    if (isset($get[$key])) unset($get[$key]);
    return $left . '?' . http_build_query($get);
}

如何删除php中的最后一个元素

9 个答案:

编辑：