使用Javascript进行URL编码，然后使用PHP进行解码

Question

I am wanting to url encode a string with Javascript, with the relevant part of the code being:

this.options[this.selectedIndex].value

or the full line:

<select name="category" onChange="javascript:document.location.href='<? echo '/' . $state . '/dir/'; ?>' + this.options[this.selectedIndex].value;">

How can I url encode this with JS and then safely decode it with PHP using urldecode ?

Answer 1

I had a problem when I wanted to use & in URL. I just solved it using encodeURIComponent() .

I used it in onchange function of my dropdown element like this:

onchange="window.location='test.php?c='+encodeURIComponent(this.value)"

It works well in my case.

I tried to use php function urlencode() for this, but I couldn't do that.

Answer 2

You have 3 options:

• escape() will not encode: @*/+

• encodeURI() will not encode: ~!@#$&*()=:/,;?+'

• encodeURIComponent() will not encode: ~!*()'