How to Extract Url from text

I have one question as follows:

I use PHP to Crawler jQuery code like the following:

$(location).attr("href", "https:\/\/\/DownloadContent\/1\/fiweru23984j237985twe9s");$.4film_shoppingcart.processContentViewPostDownload("676698335");$.4film_shoppingcart.updateShoppingcartNbContents("0");$("#feedbacks-container .feedbacks-inner").html("\n\n\n\n\n\n")

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How can extract this url value, like this:

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Thanks all
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MrLodyAuthor Commented:
Please help me, thanks!
Here's something to set you up (the slashes, you can solve yourself?):


$var_a = '$(location).attr("href", "https:\/\/\/DownloadContent\/1\/fiweru23984j237985twe9s");$.4film_shoppingcart.processContentViewPostDownload("676698335");$.4film_shoppingcart.updateShoppingcartNbContents("0");$("#feedbacks-container .feedbacks-inner").html("\n\n\n\n\n\n")';
$pattern = '#http(.*?)(?=\")#';
preg_match($pattern, $var_a, $matches);
echo $matches[0];

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MrLodyAuthor Commented:
Hello, thanks your reply, but url problem: (\/\/)


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Please fix it
MrLodyAuthor Commented:
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