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javascriptajaxspecial-charactersencode
Glenn
Glenn

Reputation: 265

ajax post special characters

How do I pass a a large string containing characters like '%' and '&' to my php page through ajax post?

In other words how to javascript-encode them and php-decode them?

Upvotes: 8

Views: 33615

Answers (3)

gahooa
gahooa

Reputation: 137532

the encodeURIComponent() JavaScript function can be used to escape any of those characters in either the keys or the values.

PHP will receive and decode it automatically into the $_POST array.

The format of the data should be Query String format, specifically:

Content-Type: application/x-www-form-urlencoded

For example:

Name=Joe&Age=23&City=Altoona

If you use encodeURIComponent() on each key and each value, then join them with =, and group them by &, you won't have any further issues.

Upvotes: 20

alemjerus
alemjerus

Reputation: 8268

You actually don't need to encode or decode something, if you use POST parameter in send method of XMLHttpRequest. Only GET needs such and encoding, since it uses URI field. You should be careful when using this data in SQL requests. Beware of injections.

Upvotes: 1

Gabriel McAdams
Gabriel McAdams

Reputation: 58293

To encode them in javascript, use encodeUri and encodeUriComponent

http://www.w3schools.com/jsref/jsref_encodeURIComponent.asp

PHP Decode:

http://php.net/manual/en/function.urldecode.php

Upvotes: 2

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