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Number validation

Number validation --  Validation for numbers.

Introduction to Number validation

This method validates numbers. Decimal or not, max and min.

This method takes two arguments:

  • A number.

  • An array of options (optional).

Various option are:

  • decimal (mixed) - Decimal chars or false when decimal not allowed. For example ",." to allow both "." and ",".

  • dec_prec (int) - Number of allowed decimals.

  • min (float) - Minimum value.

  • max (float) - Maximum value.

How to use Number Validation

Example 66-1. Number Validation

The following example assumes that one wants to validate a number when decimals are allowed and decimal character is ".", and number of allowed decimals is 4. 


<?php
require_once 'Validate.php';

if (Validate::number(8.0004, array('decimal' => '.', 'dec_prec' => 4))) {
    echo 'Valid number';
}
?>

And the following one assumes that one wants to validate a decimal number with decimal character "," or "." while it's less than "-7" and greater than "-9". 


<?php
require_once 'Validate.php';

$number = '-8,1';
if (Validate::number($number,
    array('decimal' => '.,', 'min' => -9, 'max' => -7 ))) {
    echo 'Valid';
} else {
    echo 'Invalid';
}
?>
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