Protecting Special Characters in Query String in PHP
How To Protect Special Characters in Query String in PHP?
If you want to include special characters like spaces in the query string, you need to protect them by applying the urlencode() translation function. The script below shows how to use urlencode():
<?php print("<html>"); print("<p>Please click the links below" ." to submit comments about FYICenter.com:</p>"); $comment = 'I want to say: "It\'s a good site! :->"'; $comment = urlencode($comment); print("<p>" ."<a href=\"processing_forms.php?name=Guest&comment=$comment\">" ."It's an excellent site!</a></p>"); $comment = 'This visitor said: "It\'s an average site! :-("'; $comment = urlencode($comment); print("<p>" .'<a href="processing_forms.php?'.$comment.'">' ."It's an average site.</a></p>"); print("</html>"); ?>
If you copy this script as submit_comments.php to your Web server, and click the first link, you will get:
query_string = name=Guest&comment= I+want+to+say%3A+%22It%27s+a+good+site%21+%3A-%3E%22 Number of values: 2 name = Guest comment = I want to say: "It's a good site! :->"
If you click the second link, you will get:
query_string = This+visitor+said%3A+%22It%27s+an+average+site%21+%3A-%28%22 Number of values: 1 This_visitor_said:_\"It\'s_an_average_site!_:-(\" =
Now you know that urlencode() all special characters into HEX numbers. To translate them back, you need to apply urldecode().
2016-11-05, 567👍, 0💬
How To Run a PHP Script? A standard alone PHP script can be executed directly with the PHP Command L...
How to add request URL Template Parameters to my Azure API operation 2017 version to make it more us...
How to create Hello-3.0.epub with WinRAR? I have all required files to create Hello-3.0.epub. To cre...
How to login to the Developer Portal internally by you as the publisher? Normally, the Developer Por...
What is EPUB 2.0 Metadata "dc:description" Element? EPUB 2.0 Metadata "dc:description" is an optiona...