What is the significance of using %20 for spaces in PHP variables?

When passing variables through URLs in PHP, spaces need to be encoded as %20 to ensure they are properly interpreted by the server. This is because spaces are not allowed in URLs and can cause issues if not encoded. To fix this issue, we can use the urlencode() function in PHP to encode spaces as %20 before passing the variable in the URL. 

// Encode the variable with urlencode() before passing it in the URL
$variable = "Hello World";
$encoded_variable = urlencode($variable);

// Pass the encoded variable in the URL
echo "<a href='example.php?var=".$encoded_variable."'>Click Here</a>";

Keywords

URL encoding PHP variables %20 spaces significance

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