PHP：需要有关使用 PHP v5.1.3 的服务器上的表单验证的建议

Question

I'm trying to learn how to do server-side validation on a web form using PHP. I already have the client-side validation working through jQuery. During my studies I read something about native validation filters added to PHP v5.2 that does much of the grunt work for form validation. Unfortunately, I just learned that my office server is running PHP v5.1.3. Ouch! To make a long story short, we can not upgrade the PHP version. End of discussion.

As a newbie to all of this, are there other readily available functions out there that would help me validate form input data for older versions of PHP that do just as good of a job? I read something about HTML_QuickForm2, but I already have my form built in HTML5 (using a polyfill to help older browsers like IE8 validate HTML5 forms).

Again, new to all this and looking to be nudged into the right direction so I can get this form validated as quickly as possible.

Answer 1

As a starter, I would suggest you look into HTML5 -- by default, you have some (very) basic validation for certain field types ( email , tel , date ...).

Next, I would look into PHP's preg_match ; this will help you match inputs to certain strings. First step would be to start reading a few articles on PHP validation. Here's an introductory article on the subject. Another good source, which requires some time and effort, would be to go straight to the source at php.net .

Answer 2

The native validation filters (assuming email primarily) could be replaced with a simple regular expression. As for others, string length checks, is_numeric checks and regex for more complex stuff will do the trick.

But really: upgrade that server (or install a secondary one). PHP 5.1 is just ancient.