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Ive used explode on a user input variable to get an array of search terms. These search terms need to be added to the end of a URL in the following style = www.example.com/$search[0]%20$search[1]

However, I dont know how many search terms theres going to be, eg there could be 5, or there could be 1, and if I add 5 search[] variables to the end and the user inputs 1 search term, I get 4 errors for the missing variables.

Any ideas how I can solve this problem?

Thanks.

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implode()? –  j08691 Feb 7 '12 at 22:13

5 Answers 5

up vote 2 down vote

The opposite of explode is implode. Use that.

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up vote 1 down vote 
$url .= implode("%20", $search);

That's really all there is to it.

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up vote 1 down vote

use the implode function with %20 as the delimiter, and your params array as the data.

this will return a string that consists of all the array values concatenated with %20 in between them

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up vote 1 down vote

PHP already comes with a handy function to build query strings.. look up http_build_query

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up vote 0 down vote

Use isset() to check if the variable exists. It also works on arrays. See the manual: http://www.php.net/manual/en/function.isset.php

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