[php] urlencode vs rawurlencode?

One practical reason to choose one over the other is if you're going to use the result in another environment, for example JavaScript.

In PHP urlencode('test 1') returns 'test+1' while rawurlencode('test 1') returns 'test%201' as result.

But if you need to "decode" this in JavaScript using decodeURI() function then decodeURI("test+1") will give you "test+1" while decodeURI("test%201") will give you "test 1" as result.

In other words the space (" ") encoded by urlencode to plus ("+") in PHP will not be properly decoded by decodeURI in JavaScript.

In such cases the rawurlencode PHP function should be used.

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