[SOLVED] is_numeric not working

[adam291086]

I have some script that is taking an entered day dd/mm/yyyy. Spliting it up into dd mm and yyyy. Then checking if dd/mm/yyyy is entered in with /. then i am trying to check if it contains number. All i get is the echoed error message. Can anyone point me in the right direction

 

<?php

if ($_POST)
{
error_reporting(E_ALL);

//get the variables

$title = $_POST['title'];
$description = $_POST['description'];
$date = $_POST['date'];

//search for / in day, month and year


$findme    = '/';
$date1 = strpos($date, $findme);


// Nope, 'a' is certainly not in 'xyz'
if ($date1 === false) {
    echo "The date must have the format dd/mm/yyyy";
}


if ($date1 !== false) {



//get the day, month and year

$date = explode("/", $date);
$day = $date[0];
$month = $date[1];
$year = $date[2];


}

if (is_numeric($day && $month && $year)) {
echo "Event Added Successfully";
} 
else {
echo "Invalid date entry. Please try again";
}




//end if at start
} 


?>

 

I have done some debugging and all the vairbles from the form are being posted

[helraizer]

Try

 

<?php 

if (is_numeric($day) && is_numeric($month) && is_numeric($year)) {

echo "Event Added Successfully";
} 
else {
echo "Invalid date entry. Please try again";
}
?>

 

That should work.

Sam

[adam291086]

oh so simple.

[trq]

You would be much better off using one simple regex. I'm not much good at them, but this might go close. Ask your question in the regx board if you get stuck.

 

<?php

 $date = $_POST['date'];
 if (preg_match('/[0-9]{2}\/[0-9]{2}\/[0-9]{4}/',$date) {
   // valid.
 }

?>

[Daniel0]

You might want to use /^[0-9]{2}\/[0-9]{2}\/[0-9]{4}$/ instead so you're sure there isn't anything before or after as well. Or /^\d{2}\/\d{2}\/\d{4}$/ (\d means any digit, i.e. [0-9]).

[adam291086]

ok i will look into regex. Never used them before but seen some people using them. Thanks guys

[revraz]

That was the same format I used.  I can give you the regex I used if you want.

[adam291086]

yes please. As the manual only gives the basics.

[trq]

Whats wrong with Daniel0's example?

 

<?php

  $date = $_POST['date'];
  if (preg_match('/^\d{2}\/\d{2}\/\d{4}$/',$date) {
    // valid.
  }

?>

[revraz]

Here is the one I used

 

^(((0[1-9]|[12]\d|3[01])\/(0[13578]|1[02])\/(\d{2}))|((0[1-9]|[12]\d|30)\/(0[13456789]|1[012])\/(\d{2}))|((0[1-9]|1\d|2[0-8])\/02\/(\d{2}))|(29\/02\/((0[48]|[2468][048]|[13579][26])|(00))))$

 

Found at

 

http://regexlib.net/REDetails.aspx?regexp_id=488

[revraz]

What if I enter 44/44/4444 ?

 

Whats wrong with Daniel0's example?

 

<?php

  $date = $_POST['date'];
  if (preg_match('/^\d{2}\/\d{2}\/\d{4}$/',$date) {
    // valid.
  }

?>

[PFMaBiSmAd]

Actually, if you add the 3rd parameter to the preg_match() function to get it to return the fields it matches in an array, you can use the checkdate() function to confirm the date is valid - http://php.net/checkdate