Parse input string

Question

I have a strings like this:

index.php?url=index/index
index.php?url=index/index/2&a=b

I'm trying to get this part of string: index/index or index/index/2.

I have tried parse_str function but not successful. Thanks.

echo '<pre>'; parse_str($filename, $output); print_r($output); echo '<pre>'; — XTRUST.ORG
– XTRUST.ORG, Commented Oct 20, 2015 at 18:52
$filename is not defined in your comment. Edit your post and put a minimal reproducible example into it. — Josh J
– Josh J, Commented Oct 20, 2015 at 18:52
You can use parse_url() to extract the query string and then parse_str() to get at the arguments. — Josh J
– Josh J, Commented Oct 20, 2015 at 18:55

CAllen · Accepted Answer · 2015-10-20 18:59:55Z

2

You should be able to use $_SERVER['QUERY_STRING'] as shown below:

$url_params = $_SERVER['QUERY_STRING']; // grabs the parameter
$url_params = explode( '/', $url_params ); // seperates the params by '/'

which returns an array

Example index.php?url=index/index2 now becomes:

$url_params[ 0 ] =  index;
$url_params[ 1 ] =  index2;

answered Oct 20, 2015 at 18:59

CAllen

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Andrew Coder · Accepted Answer · 2015-10-20 18:52:51Z

0

Without more info:

// Example input
$input               = "index.php?url=index/index/2&a=b";
$after_question_mark = explode("=",$input)[1];
$before_ampersand    = explode("&",$after_question_mark)[0];
$desired_output      = $before_ampersand; // 'index/index/2'

More resilient option:

// Example input
$input               = "index.php?url=index/index/2&a=b";
$after_question_mark = explode("=",$input)[1];
if (strstr($after_question_mark, "&")){
    // Check for ampersand
    $before_ampersand    = explode("&",$after_question_mark)[0];
    $desired_output      = $before_ampersand; // 'index/index/2'
} else {
    // No ampersand
    $desire_output       = $after_question_mark;
}

answered Oct 20, 2015 at 18:52

Andrew Coder

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Andrew · Accepted Answer · 2015-10-20 19:35:23Z

-1

$url = "index.php?url=index/index/2&a=b";
$query = parse_url($url, PHP_URL_QUERY);
$output = substr($query, $strpos($query, "=") + 1);
output: index/index/2&a=b

This will get you everything after the question mark

You can get more info on parse_url

or

$url = "index.php?url=index/index/2&a=b";
$output = substr($url, strpos("=") +1, $strrpos($url, "&") - strlen($url));
output: index/index/2

You dont need to break into an array to create overhead if you really just want to get a substring from a string

this will return false on no query string

edited Oct 20, 2015 at 19:35

answered Oct 20, 2015 at 18:54

Andrew

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1 Comment

Andrew Over a year ago

I have edited my answer to fit your request...but mainly parse_url is the function to go for..imho

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