美丽的方式来删除PHP的GET变量？ [英] Beautiful way to remove GET-variables with PHP?

问题描述

我有一个包含GET变量的完整URL的字符串。哪个是删除GET变量的最佳方法？有没有一种很好的方法来删除它们中的一个？

这是一个可行的代码，但不是很漂亮（我认为）：

  $ current_url = explode（'？'，$ current_url）; 
 echo $ current_url [0]; 
  

上面的代码只是删除了所有的GET变量。在我的情况下，URL是由CMS生成的，因此我不需要任何有关服务器变量的信息。 删除所有变量，也许最漂亮的是

  $ url = strtok（$ url，'？'）; 
  

请参阅 strtok 在这里。

下面），并处理不带'？'的url。

获取一个url + querystring并删除一个变量（不使用正则表达式替换，可能会更快在某些情况下），你可能会这样做：

  function removeqsvar（$ url，$ varname）{
 list （$ urlpart，$ qspart）= array_pad（explode（'？'，$ url），2，''）; 
 parse_str（$ qspart，$ qsvars）; 
 @unset（$ qsvars [$ varname]）; 
 $ newqs = http_build_query（$ qsvars）; 
返回$ urlpart。 '？'。 $ newqs; 
} 
  

正则表达式替换为移除单个var可能如下所示：

 函数removeqsvar（$ url，$ varname）{
 return preg_replace（'/（[？&]）'。$ varname '= [^&安培;] +（&安培; | $）/'， '$ 1'，$网址）; 
} 
  

继承几种不同方法的时间，确保时间在两次运行之间重置。

 <？php 
 
 $ number_of_tests = 40000; 
 
 $ mtime = microtime（）; 
 $ mtime = explode（，$ mtime）; 
 $ mtime = $ mtime [1] + $ mtime [0]; 
 $ starttime = $ mtime; 
 
 for（$ i = 0; $ i <$ number_of_tests; $ i ++）{
 $ str =http://www.example.com?test=test; 
 preg_replace（'/ \\。* /'，''，$ str）; 
} 
 $ mtime = microtime（）; 
 $ mtime = explode（，$ mtime）; 
 $ mtime = $ mtime [1] + $ mtime [0]; 
 $ endtime = $ mtime; 
 $ totaltime =（$ endtime  -  $ starttime）; 
 echoregexp execution time：。$ totaltime。seconds;; 
 
 $ mtime = microtime（）; 
 $ mtime = explode（，$ mtime）; 
 $ mtime = $ mtime [1] + $ mtime [0]; 
 $ starttime = $ mtime; 
 for（$ i = 0; $ i <$ number_of_tests; $ i ++）{
 $ str =http://www.example.com?test=test; 
 $ str = explode（'？'，$ str）; 
} 
 $ mtime = microtime（）; 
 $ mtime = explode（，$ mtime）; 
 $ mtime = $ mtime [1] + $ mtime [0]; 
 $ endtime = $ mtime; 
 $ totaltime =（$ endtime  -  $ starttime）; 
 echo爆炸执行时间：。$ totaltime。seconds;; 
 
 $ mtime = microtime（）; 
 $ mtime = explode（，$ mtime）; 
 $ mtime = $ mtime [1] + $ mtime [0]; 
 $ starttime = $ mtime; 
 for（$ i = 0; $ i <$ number_of_tests; $ i ++）{
 $ str =http://www.example.com?test=test; 
 $ qPos = strpos（$ str，？）; 
 $ url_without_query_string = substr（$ str，0，$ qPos）; 
} 
 $ mtime = microtime（）; 
 $ mtime = explode（，$ mtime）; 
 $ mtime = $ mtime [1] + $ mtime [0]; 
 $ endtime = $ mtime; 
 $ totaltime =（$ endtime  -  $ starttime）; 
 echostrpos execution time：。$ totaltime。seconds;; 
 
 $ mtime = microtime（）; 
 $ mtime = explode（，$ mtime）; 
 $ mtime = $ mtime [1] + $ mtime [0]; 
 $ starttime = $ mtime; 
 for（$ i = 0; $ i <$ number_of_tests; $ i ++）{
 $ str =http://www.example.com?test=test; 
 $ url_without_query_string = strtok（$ str，'？'）; 
} 
 $ mtime = microtime（）; 
 $ mtime = explode（，$ mtime）; 
 $ mtime = $ mtime [1] + $ mtime [0]; 
 $ endtime = $ mtime; 
 $ totaltime =（$ endtime  -  $ starttime）; 
 echotok execution time：。$ totaltime。seconds;; 
  

显示

 正则表达式执行时间：0.14604902267456秒;爆炸执行时间：0.068033933639526秒; strpos执行时间：0.064775943756104秒;执行时间：0.045819044113159秒; 
正则表达式执行时间：0.1408839225769秒;爆炸执行时间：0.06751012802124秒; strpos执行时间：0.064877986907959秒;执行时间：0.047760963439941秒; 
正则表达式执行时间：0.14162802696228秒;爆炸执行时间：0.065848112106323秒; strpos执行时间：0.064821004867554秒;执行时间：0.041788101196289秒; 
正则表达式执行时间：0.14043688774109秒;爆炸执行时间：0.066350221633911秒; strpos执行时间：0.066242933273315秒; tok执行时间：0.041517972946167秒; 
正则表达式执行时间：0.14228296279907秒;爆炸执行时间：0.06665301322937秒; strpos执行时间：0.063700199127197秒;执行时间：0.041836977005005秒; 
  

strtok获胜，并且是迄今为止最小的代码。

I have a string with a full URL including GET variables. Which is the best way to remove the GET variables? Is there a nice way to remove just one of them?

This is a code that works but is not very beautiful (I think):

$current_url = explode('?', $current_url);
echo $current_url[0];

The code above just removes all the GET variables. The URL is in my case generated from a CMS so I don't need any information about server variables.

解决方案

Ok, to remove all variables, maybe the prettiest is

$url = strtok($url, '?');

See about strtok here.

Its the fastest (see below), and handles urls without a '?' properly.

To take a url+querystring and remove just one variable (without using a regex replace, which may be faster in some cases), you might do something like:

function removeqsvar($url, $varname) {
    list($urlpart, $qspart) = array_pad(explode('?', $url), 2, '');
    parse_str($qspart, $qsvars);
    @unset($qsvars[$varname]);
    $newqs = http_build_query($qsvars);
    return $urlpart . '?' . $newqs;
}

A regex replace to remove a single var might look like:

function removeqsvar($url, $varname) {
    return preg_replace('/([?&])'.$varname.'=[^&]+(&|$)/','$1',$url);
}

Heres the timings of a few different methods, ensuring timing is reset inbetween runs.

<?php

$number_of_tests = 40000;

$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;

for($i = 0; $i < $number_of_tests; $i++){
    $str = "http://www.example.com?test=test";
    preg_replace('/\\?.*/', '', $str);
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "regexp execution time: ".$totaltime." seconds; ";

$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
    $str = "http://www.example.com?test=test";
    $str = explode('?', $str);
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "explode execution time: ".$totaltime." seconds; ";

$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
    $str = "http://www.example.com?test=test";
    $qPos = strpos($str, "?");
    $url_without_query_string = substr($str, 0, $qPos);
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "strpos execution time: ".$totaltime." seconds; ";

$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
    $str = "http://www.example.com?test=test";
    $url_without_query_string = strtok($str, '?');
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "tok execution time: ".$totaltime." seconds; ";

shows

regexp execution time: 0.14604902267456 seconds; explode execution time: 0.068033933639526 seconds; strpos execution time: 0.064775943756104 seconds; tok execution time: 0.045819044113159 seconds; 
regexp execution time: 0.1408839225769 seconds; explode execution time: 0.06751012802124 seconds; strpos execution time: 0.064877986907959 seconds; tok execution time: 0.047760963439941 seconds; 
regexp execution time: 0.14162802696228 seconds; explode execution time: 0.065848112106323 seconds; strpos execution time: 0.064821004867554 seconds; tok execution time: 0.041788101196289 seconds; 
regexp execution time: 0.14043688774109 seconds; explode execution time: 0.066350221633911 seconds; strpos execution time: 0.066242933273315 seconds; tok execution time: 0.041517972946167 seconds; 
regexp execution time: 0.14228296279907 seconds; explode execution time: 0.06665301322937 seconds; strpos execution time: 0.063700199127197 seconds; tok execution time: 0.041836977005005 seconds; 

strtok wins, and is by far the smallest code.

这篇关于美丽的方式来删除PHP的GET变量？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！