getting int value from comma separated number php - php

Question

How do I turn a thousand-comma separated string representation of an integer into an integer value in PHP? (is there a general way to do it for other separators too?)
e.g. 1,000 -> 1000
Edit (Thanks #ghost) Ideally, decimals should be handled, but I could accept a solution that truncates at a decimal point.

Answer 1

If thats simple as it gets you could use filter_var():
$number = '1,000';
$number = (int) filter_var($number, FILTER_SANITIZE_NUMBER_INT);
var_dump($number);
Or
$number = '1,000.5669';
$number = (float) str_replace(',', '', $number);
var_dump($number);

Answer 2

You can strip a specific character using str_replace, and cast as an integer using intval. A regular expression filter can also be used to determine if the input string is formatted correctly. Here is what that code might look like:
<?php
function remove_delimiters_simple($string, $delimiter = ',') {
// Removes all instances of the specified delimiter and cast as an integer
// Comma (,) is the default delimiter
return (int) str_replace($delimiter, '', $string);
}
function remove_delimiters_advanced($string, $delimiter = ',') {
// Use preg_quote in case our delimiter is '/' for some reason
// The regular expression should match validly formatted numbers using a delimiter
// every 3 characters
$valid_format_expression = sprintf(
'/^\d{1,3}(%s\d{3})*$/',
preg_quote($delimiter, '/')
);
// If not a validly formatted number, return null
if (! preg_match($valid_format_expression, $string)) {
return null;
}
// Otherwise, return the simple value
return remove_delimiters_simple($string, $delimiter);
}

Answer 3

If using PHP >= 5.3, you could use numfmt_create(), like:
$fmt = numfmt_create( 'nl_NL', NumberFormatter::TYPE_INT32 );
$num = "1,000";
echo numfmt_parse($fmt, $num); //gives 1000
Note::nl_NL is the locale you used in formatting number, and it should be the same when using for numfmt_create