| Re: Simpler way to validate form fields? [message #179802 is a reply to message #179800] |
Thu, 06 December 2012 16:50   |
M. Strobel
Messages: 386
Registered: December 2011
Karma:
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Senior Member |
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Am 06.12.2012 14:55, schrieb Gilles:
> On Thu, 06 Dec 2012 14:43:57 +0100, Gilles <nospam(at)nospam(dot)com> wrote:
>
>> function getDateFromForm($key, $l=8, $val=null) {
>> //Check for date DD/MM/YYYY
>> return (isset($_POST[$key])) ?
>> filter_var(substr($_POST[$key],0,$l),
>>
>> FILTER_VALIDATE_REGEXP,array("options"=>array("regexp"=>"/^\d{2}\/\d{2}\/\d{4}/ "))
>> )
>> : $val;
>> }
>
> I made a mistake, but even after turning $_POST into $_GET, it still
> displays nothing:
>
> function getDateFromForm($key, $l=8, $val=null) {
> //Check for date DD/MM/YYYY
> return (isset($_GET[$key])) ?
> filter_var(substr($_GET[$key],0,$l),
>
> FILTER_VALIDATE_REGEXP,array("options"=>array("regexp"=>"/^\d{2}\/\d{2}\/\d{4}/ "))
> )
> : $val;
> }
>
> //http://192.168.0.1/test.php?mydate=01/02/2012
> print getDateFromForm("mydate");
I don't know offhand what exactly PHP makes of your GET URL, but be aware that the
forward slash is a path separator.
The regex is okay. Find ways to quickly test code bits, or functions, if possible
just use the command line. My test (newlines inserted for reading):
php > $d = "01/01/2112";
php > echo filter_var($d,
FILTER_VALIDATE_REGEXP,array("options"=>array("regexp"=>"/^\d{2}\/\d{2}\/\d{4}/ "))),
PHP_EOL;
01/01/2112
php > echo urlencode($d), PHP_EOL;
01%2F01%2F2112
Write regexp here with a different separator, easier to read:
array("regexp"=>"#^\d{2}/\d{2}/\d{4}#")
/Str.
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