trouble with php getimagesize (url encode problems with space)

I use getimagesize to judge an image height and size.

Wh开发者_高级运维en a url has space, the getimagesize echo's an error. I've tried using urlencode() to transfer all the url address, it still returns an error. I noticed that if I just change the space into %20, getimagesize runs ok.

I have no idea why?

I also tired to use $newurl = preg_replace(' ', '%20', $url); It echo'ed :

Warning: preg_replace() [function.preg-replace]: Empty regular expression

So how to preg_replace correctly. And is there a way to transfer the url correctly with getimagesize so that it passes all possible test cases.

Thanks

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you should use str_replace(' ', "%20", $url) instead of preg_replace(' ', '%20', $url);

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urldecode() is the function you want to use to decode all those characters back after you've converted them before processing the image. Run the string containing the URL through that.

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If only the file name contains spaces you can use rawurlencode().

$url = dirname($url) . '/'. rawurlencode(basename($url));

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Can you post some example code from when you tried to use urlencode? Also, you don't need to use preg_replace for the last bit, you can simply use str_replace.