Checking Input In Bulk

[endlyss]

When checking input from form data is it possible to check the input from all fields at once or must each field be checked seperately?

For instance you know you want all input to be alpha numeric.

[devinemke]

form data is typically returned as arrays ($POST and $GET) so simply loop thru the array using the [man]foreach[/man] construct and check each value.

[ozzythaman]

if checking means just to test if the values are SET you can do the following

make a list of variables to be set automatically if a person has pressed a submit button for a login script for example;

$loginscriptvars=array("username","password","something else","perhaps a hidden form value");

and a func:
this one is for _GET

function areallset($array){
for ($a=0;$a<count($a);$a++){
if (!isset($_GET[$array])) return 0;
}
return 1;
}

and then when testing

if (areallset($loginscriptvars)){
// trying to log in

if successful: set cookies and redirect (for example)
}

// AND HERE, THE ACTUAL PAGE FOR THE FORM

you could also write code that outputs which vars are missing etc etc..

anyways, this is similar to how i do it

and even more advanced: make an array for the type of contents of each variable and then write a code that checks its contents to see if the datatype (date? text? strongpass? etc etc) is good, and THEN proceed...

[endlyss]

🙂