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replace query variable

Posted on 2013-05-30
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Last Modified: 2013-06-02
replace
$replace_query_string with ''

website.com/index.php?query_variable1=45&query_variable2=59499


if $replace_query_string='query_variable1'
want  
website.com/index.php?query_variable2=59499

if $replace_query_string='query_variable2'
want  
website.com/index.php?query_variable1=45&
0
Comment
Question by:rgb192
6 Comments
 
LVL 35

Expert Comment

by:Terry Woods
ID: 39209888
Try this:

$query_string = preg_replace('#'.preg_quote($replace_query_string,'#').'=[^&]*&?#', '', $query_string);

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I haven't tested it; let me know if you have any trouble and I'll take another look.
0
 

Author Comment

by:rgb192
ID: 39209897
<?php
$query_string='website.com/index.php?query_variable1=45&query_variable2=59499';
  $query_string = preg_replace('#'.preg_quote($replace_query_string,'#').'=[^&]*&?#', '', $query_string);
  echo $query_string;

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website.com/index.php?query_variable1query_variable2

want to delete one query_string variable and one query_string value
0
 
LVL 35

Accepted Solution

by:
Terry Woods earned 167 total points
ID: 39209902
Is the value of $replace_query_string populated?

Here's a test of the different possible values stated:
<?
$query_string='website.com/index.php?query_variable1=45&query_variable2=59499';
$replace_query_strings = array(
        'query_variable1',
        'query_variable2'
);

print "Before:\n$query_string\n";
foreach ($replace_query_strings as $replace_query_string) {
 print "When replace_query_string is: $replace_query_string\n";
 print preg_replace('#'.preg_quote($replace_query_string,'#').'=[^&]*&?#', '', $query_string);
 print "\n";
}

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Output:
Before:
website.com/index.php?query_variable1=45&query_variable2=59499
When replace_query_string is: query_variable1
website.com/index.php?query_variable2=59499
When replace_query_string is: query_variable2
website.com/index.php?query_variable1=45&

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ie it does give the intended output
0
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LVL 15

Assisted Solution

by:Jagadishwor Dulal
Jagadishwor Dulal earned 167 total points
ID: 39210023
$query_string='website.com/index.php?query_variable1=45&query_variable2=59499';
  $result=explode('&', $query_string);
echo $result[0];

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0
 
LVL 109

Assisted Solution

by:Ray Paseur
Ray Paseur earned 166 total points
ID: 39210520
There must be some context to this question, because in its isolated form, it looks like an exercise in using the if() statement and the assignment operator, and everyone who has had more than one hour of PHP instruction knows how to do that.  Fly up a little higher and look down on the larger problem.  Tell us what you see in the central issue and the surrounding landscape.  We can probably identify and explain a commonly used design pattern -- something that covers anchor tags and URL arguments, maybe.
0
 

Author Closing Comment

by:rgb192
ID: 39213967
first two solutions worked,
explode & simple and effective
next solution was me realizing different design pattern

thanks
0

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