Beautiful way to remove GET-variables with PHP

Question

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

User · Answer

just use echo d javascript to rid the URL of any variables with a self-submitting  blank form        lt       if  isset   GET  your var            blah blah blah code     echo   lt script type  text javascript  gt unsetter    lt  script gt           gt     Then make this javascript function       function unsetter             lt form id    unset  name    unset  METHOD  GET  gt  lt input type  submit  gt  lt  form gt    appendTo  body             unset    submit

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Inspired by the comment of  MitMaro  I wrote a small benchmark to test the speed of solutions of  Gumbo   Matt Bridges and  justin the proposal in the question   function teststrtok  number of tests       for  i   0   i  lt   number of tests   i            str    http   www example com test test          str   strtok  str               function testexplode  number of tests       for  i   0   i  lt   number of tests   i            str    http   www example com test test          str   explode       str           function testregexp  number of tests       for  i   0   i  lt   number of tests   i            str    http   www example com test test         preg replace                 str           function teststrpos  number of tests       for  i   0   i  lt   number of tests   i            str    http   www example com test test          qPos   strpos  str               url without query string   substr  str  0   qPos             number of runs   10  for  runs   0   runs  lt   number of runs   runs         number of tests   40000     functions   array  strtok    explode    regexp    strpos      foreach  functions as  func        starttime   microtime true       call user func  test   func   number of tests       echo  func       sprintf   0 2f  microtime true  -  starttime             echo   lt br   gt         strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18  strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18  strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18  strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18  strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18  strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18  strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18  strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18  strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18  strtok  0 12 explode  0 19 regexp  0 31 strpos  0 18    Result   justin s strtok is the fastest    Note  tested on a local Debian Lenny system with Apache2 and PHP5

User · Answer

Couldn t you use the server variables to do this    Or would this work    unset   GET  page      url     SERVER  SCRIPT NAME        http build query   GET     Just a thought

User · Answer

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       amp      varname      amp     amp         1   url       Heres the timings of a few different methods  ensuring timing is reset inbetween runs    lt  php   number of tests   40000    mtime   microtime     mtime   explode      mtime    mtime    mtime 1     mtime 0    starttime    mtime   for  i   0   i  lt   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  lt   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  lt   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  lt   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

User · Answer

You can use the server variables for this  for example   SERVER  REQUEST URI    or even better    SERVER  PHP SELF

User · Answer

list  url    explode       url  2

User · Answer

If the URL that you are trying to remove the query string from is the current URL of the PHP script  you can use one of the previously mentioned methods   If you just have a string variable with a URL in it and you want to strip off everything past the     you can do    pos   strpos  url         url   substr  url  0   pos

User · Answer

Another solution    I find this function more elegant  it will also remove the trailing     if the key to remove is the only one in the query string          Remove a query string parameter from an URL         param string  url     param string  varname        return string     function removeQueryStringParameter  url   varname         parsedUrl   parse url  url        query   array         if  isset  parsedUrl  query               parse str  parsedUrl  query     query           unset  query  varname                path   isset  parsedUrl  path       parsedUrl  path              query    empty  query         http build query  query             return  parsedUrl  scheme            parsedUrl  host     path   query      Tests    urls   array       http   www example com test test        http   www example com bar foo amp test test2 amp foo2 dooh        http   www example com        http   www example com foo bar        http   www example com test no-empty-path  foo bar amp test test5        https   www example com test test test test test6       foreach   urls as  url        echo  url    lt br  gt        echo removeQueryStringParameter  url   test      lt br  gt  lt br  gt        Will output   http   www example com test test http   www example com  http   www example com bar foo amp test test2 amp foo2 dooh http   www example com bar foo amp foo2 dooh  http   www example com http   www example com  http   www example com foo bar http   www example com foo bar  http   www example com test no-empty-path  foo bar amp test test5 http   www example com test no-empty-path  foo bar  https   www example com test test test test test6 https   www example com test test test    raquo  Run these tests on 3v4l

User · Answer

How about a function to rewrite the query string by looping through the   GET array    Rough outline of a suitable function  function query string exclude  exclude   subject     GET   array prefix          query params   array     foreach  subject as  key  gt  var         if  in array  key  exclude             if is array  var      recursive call into sub array              query params      query string exclude  exclude   var   array prefix      key                 else               query params       empty  array prefix   array prefix      key      key       var                              return implode   amp    query params       Something like this would be good to keep handy for pagination links etc    lt a href   p 3 amp  lt    query string exclude array  p      gt   title  Click for page 3  gt Page 3 lt  a gt

User · Answer

How about   preg replace                 str

User · Answer

basename   SERVER  REQUEST URI    returns everything after and including the       In my code sometimes I need only sections  so separate it out so I can get the value of what I need on the fly  Not sure on the performance speed compared to other methods  but it s really useful for me    urlprotocol    http   if    SERVER  HTTPS       on     urlprotocol     s     urlprotocol            urldomain     SERVER  SERVER NAME     urluri     SERVER  REQUEST URI     urlvars   basename  urluri    urlpath   str replace  urlvars     urluri     urlfull    urlprotocol    urldomain    urlpath    urlvars

User · Answer

In my opinion  the best way would be this    lt   if isset   GET  i     unset   GET  i     header  location         gt    It checks if there is an  i  GET parameter  and removes it if there is

[php] Beautiful way to remove GET-variables with PHP?

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