is_numeric

[dreamwest]

How can i check if a string of numbers is numeric, the example below is apparently still not numeric

 

$string = 13530 21333 16945 22819 24170 31196 19209;

[thebadbad]

A string needs quotes. And you can use preg_match(), allowing digits and whitespace:

 

<?php
$string = '13530 21333 16945 22819 24170 31196 19209';
if (preg_match('~^[0-9\s]+$~D', $string)) {
//string only contains digits and/or whitespace
}
?>

[webref.eu]

Yes, you would have to remove spaces from your string, as I don't think your string will be recognised as a number if it has spaces in.  You'd have to write a routine to remove spaces and then you can check for a number as follows:

 

//Protection from hackers.  Check ProductId is just a number
$TestForNumber = is_numeric($ProductId);
If ($TestForNumber == 0) {
echo "Sorry, the Product Id tried is not allowed.";
exit();
}

 

Rgds

[dreamwest]

A string needs quotes. And you can use preg_match(), allowing digits and whitespace:

 

<?php
$string = '13530 21333 16945 22819 24170 31196 19209';
if (preg_match('~^[0-9\s]+$~D', $string)) {
//string only contains digits and/or whitespace
}
?>

 

Thanks. I gotta learn preg match one day