php array to query string

<?php
$data 
= array(‘foo’‘bar’‘baz’‘boom’‘cow’ => ‘milk’‘php’ =>‘hypertext processor’);

echo http_build_query($data) . “n”;
echo 
http_build_query($data‘myvar_’);?>
output

0=foo&1=bar&2=baz&3=boom&cow=milk&php=hypertext+processor
myvar_0=foo&myvar_1=bar&myvar_2=baz&myvar_3=boom&cow=milk&php=hypertext+processor

原文
http://www.php.net/manual/en/function.http-build-query.php

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