http_build_query error when use params

Question

$post_data = array(
    'model' => 'player',
    'action' => 'buyItem',
    'params' => array('item_id'=>100, 'count'=>100)
);
$postData = http_build_query($post_data);
echo $postData;


$post_data = array(
    'model' => 'player',
    'action' => 'buyItem',
    'arams' => array('item_id'=>100, 'count'=>100)
);
$postData = http_build_query($post_data);
echo $postData;

the first output was model=player&action=buyItem¶ms%5Bitem_id%5D=100¶ms%5Bcount%5D=100. but the second output was right. so why can't I use params as the key? thanks!

I just see that in the 2nd array its arams, not params. These arrays are similar, i cant reproduce your failure. — Realitätsverlust
– Realitätsverlust, Commented Mar 7, 2014 at 9:07

The Blue Dog · Accepted Answer · 2014-03-07 10:05:34Z

2

I can reproduce this.

It seems params is being converted to &params which is being interpreted as &para (¶ - paragraph) + ms.

Your solution would be to call params something else or, do:

echo htmlspecialchars($postData);

Update.

Actually, this only seems to happen if you try and echo $postData, if you use it as part of a URL it shows up correctly.

If you do something like:

echo "<a href='www.mysite.com?" . $postData . "'>Link</a>";

you'll see what I mean.

edited Mar 7, 2014 at 10:05

answered Mar 7, 2014 at 9:10

The Blue Dog

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7 Comments

The Blue Dog Over a year ago

@Rikesh - glad it's not just my server then. ;)

Rikesh Over a year ago

@PeteR - Yeah. Though the reason is much clear in your answer, but rather I'm thinking of the cause & the solution.

ɴᴀᴛᴇ ᴅᴇᴠ Over a year ago

I wonder what server configuration differences cause this to happen? Note that this also happens with other HTML entities such as nbsp, which results in a space in the URL...

The Blue Dog Over a year ago

@Rikesh: the solution would be to call params something else!

The Blue Dog Over a year ago

@FDL: hey, whatever works - I like easy... htmlspecialchars cures it too.

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