php variable in an array

Question

 $q2=$_REQUEST['binge'];
'book2'=>array('callno'=>123006,'price'=>number_format(844,2),'desc'=>'Binge','auth'=>'Tyler Oakley','quant'=>$q2,'total'=>number_format(844,2)*$q2)

On this particular code, It kept displaying errors like this

Warning: A non-numeric value encountered in C:\xampp\htdocs\Webcard_3new\Webcard\wishlist.php on line 97

I searched all over the net for finding the right answers but some are just so complex to understand...

It supposed to be that $q2 is the variable inside an array. That variable is then multiplied to the "TOTAL". but the errors kept on going.. please help!!

I just tested this code and works: $q2= "100"; $book2 = array('callno'=>123006,'price'=>number_format(844,2),'desc'=>'Binge','auth'=>'Tyler Oakley','quant'=>$q2,'total'=>number_format(844,2)*$q2); var_dump($book2); — Hackerman
– Hackerman, Commented Apr 20, 2017 at 14:14

Praveen Kumar Purushothaman · Accepted Answer · 2017-04-20 14:10:43Z

4

The super-globals will always be strings. You need to explicitly convert them using intval():

$q2 = intval($_REQUEST['binge']);

Also, this line:

'book2'=>array...

Should be

$book2 = array...

answered Apr 20, 2017 at 14:10

Praveen Kumar Purushothaman

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MN Narvaez Over a year ago

Thanks for the recommendation... I just found the error and I just fixed it a while ago.. Maybe ill use this in other projects..

Dennis · Accepted Answer · 2017-04-20 14:18:10Z

0

You can use

$q2 = filter_var($_REQUEST['binge'], FILTER_VALIDATE_INT);

here you will have the benefit of validation where false is returned when someone passes a value that is not an integer. If it is instead a float use FILTER_VALIDATE_FLOAT instead.

Also, consider using $_GET, or $_POST directly to have more control of the data channel. $_REQUEST cobbles together several things into one, which sometimes may cause issues when more than one channel have the same key.

answered Apr 20, 2017 at 14:18

Dennis

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1 Comment

MN Narvaez Over a year ago

ok thanks for the recommendation... I already found it.. thanks

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