On 31 December 2022 06:33:01 GMT, JEFFRY KILLEN <jekillen@xxxxxxxxxxx> wrote: >Hello; >The most effective and direct way to do form input screening is with javascript. It can also play a sound an/ or just thow up some >disturbing text style sheet styles to inform the user of unacceptible input. > >As far as PHP is concerned, it can do all the screening. But the user input does have to get to the server unscreened if you do not use javascript >or html5 regex imbedded in the text input element to prescreen it. The downside of javascript has been that the user can turn it off in the browser >or use a client that does not have javascript. Php also cannot play sounds in the browser (if you want to use sounds). It can serve sounds but javascript >is needed to play them for the user. > >I have been doing web design and development for some time and have seen that well known browsers have all made it fairly difficult to turn javascript >off if you do not have development sophistication and many sights use it extensively. Particularly commercial sights use it to fetch, load and display ad >content. > >It also means that you have another programming language to get to know and be confortable with. The best and most comprehensive text I know of >is OReilly publications Javascript: The Definitive Guide. The latest version is the 7th edition. But I would also get access to the 6th edition becuase >there are significant differences in the language in the 7th edition and the 6th edition will give a better perspective on what the differences are. > >Something to be aware of: Javascript is NOT java. It is a scripted language that needs a javscript interpreter to run it. It has been developed from the >start to be used in web browsers. But it can also be used in PDF (not well known, and Adobe implementation has its own quirks). Google has also >developed a server side version of javascript: node.js. I have rudimentary experience with it and understand it to be fairly widely accepted and used. > >One thing to come to terms with regarding web development: NOTHING is really simple. So expecting simplicity will compromise effectiveness and >efficiency. > >Best; >Jeff K. > >> On Dec 30, 2022, at 9:39 PM, Deliberatus Freeman <deliberatus@xxxxxxxxxxx> wrote: >> >> Hi. I'm a recent adopter of php, and I am coming to love it. >> >> I am building a website. I need to accept a form, and it is to accept ONLY letters and numbers; just 1 char of anything else and it must bark like a rabid duck and abort the process. whats the simple reliable way to do this? >> >> PS: I rent a slice off the end of the box, and cannot play around with configuring things. >> >> >> >> Salute! >> -Kirk Bailey >> It is an ill wind that blows no minds. Instead of looking at JavaScript, you can do basic checking with HTML form validation: https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/pattern However, you will 100% need server side validation in PHP. It doesn't matter if it's difficult to circumvent what exists in the browser, you must always validate server side.
