PHP checkField() Function

I wrote a function in PHP that checks submitted form fields for certain requirements. It works by passing in an array of requirements and the array of submitted data such as $_POST or $_GET. The requirements array contains the fields types and names. For example to check for a date field, a name, an email address, and year of birth, you could do this:

$requirements = array(    'date' =>  'date',    'text' => 'name',    'email' => 'email',    'date, int, length=4' => 'yearofbirth');$resultArray = checkFields($requirements, $_GET);

It allows you to mix certain types together (where it makes sense) and the function is easy to expand to include new types.
It returns an array. The first key is either true or false depending on how the input validated, and the second key contains an error code and description.

Now with no further delay, here’s the code:

/* $reqs = array(     type => id     'text' => 'name',     'int' => 'year',     'email' => 'email',     'date' => 'date',     'length=2, int, date' => 'month',     'passwordsmatch' => 'password, confirmpass' );  $input = array | example=($_POST || $_GET)*/function checkFields($reqs, $input) {    foreach ($reqs as $type => $id) {        $fields = explode(', ', $id);        foreach ($fields as $field) {            if (!isset($input[$field]) || $input[$field] == '') {                return array(false, $id . ' resulted in err00');            }        }                $types = explode(', ', $type);        foreach ($types as $t) {            switch (preg_replace('|(^.+)(\=.*)|', '$1', $t)) {                case 'passwordsmatch':                    $fields = explode(', ', $id);                    if ($input[$fields[0]] != $input[$fields[1]]) {                        return array(false, $id . ' resulted in err06');                    }                    break;                case 'date':                    if (strtotime($input[$id]) === false) {                        return array(false, $id . ' resulted in err05');                    }                    break;                case 'email':                    if (!eregi("^(.+)(@)(.+)(\.)(.+)$", $input[$id])) {                        return array(false, $id . ' resulted in err04');                    }                    break;                case 'length':                    // Make sure the field is the correct length                    preg_match('|(^.+)(\=)(.*$)|', $t, $m);                    if (strlen($input[$id]) != $m[3]) {                        return array(false, $id . ' resulted in err01');                    }                    break;                case 'int':                    if (!is_numeric($input[$id])) {                        return array(false, $id . ' resulted in err02');                    }                    break;                case 'text':                    if (!is_string($input[$id])) {                        return array(false, $id . ' resulted in err03');                    }                    break;                default:                    trigger_error('Invalid type provided to checkFields()', E_USER_ERROR);            }        }    }    return array(true, 'err7 - Success');}

Labels: php

ZFS Coming to Mac OS X

The Zettabyte File System is coming to Mac OS X Leapord, so I hear from various sources.

If you’re listening Apple, allow us to install OS X on a ZFS filesystem. No more of this HFS +++ stuff.

Hi, Again

So I have not posted here for quite awhile. Been busy you see.

Work has been quite busy for some time. It’s busy now too but we’re being kept back by some bad weather, which is why I have the time to write this.

MacFlightGear now has a new hand. Tat ( tat_michy)
He’s been doing an awesome job. Make a working universal binary. Rewriting the launcher in RubyCocoa adding some neat new features at the same time. A big thumbs up to him. It’s great to see others taking things under control when you can’t.

I’ve been building a web site using the Zend Framework. Components used are currently Zend_Controller, Zend_View, Zend_Search_Lucene, and Zend_DB. It works great. I plan on using GData once it’s integrated and we’ll see what else.
The ZF is really coming along. It’ll be interesting to see what’s next.

But for now, tacos taste great….